Collected papers, Band 1 |
Im Buch
Ergebnisse 1-5 von 90
Seite 145
... appear to us crude and unnatural . Yet , if regarded in the light of contemporary knowledge , they embodied the latest discoveries and represented a great advance over what was known previous to them . It is not my object here either to ...
... appear to us crude and unnatural . Yet , if regarded in the light of contemporary knowledge , they embodied the latest discoveries and represented a great advance over what was known previous to them . It is not my object here either to ...
Seite 149
... appear in very young spiders . But here again we strike a great difficulty . Young spiders cannot be identified except in very few common species , and the changes due to age cannot be verified . In the case of diverging development ...
... appear in very young spiders . But here again we strike a great difficulty . Young spiders cannot be identified except in very few common species , and the changes due to age cannot be verified . In the case of diverging development ...
Seite 152
... appear entirely isolated among the Mygalomorphae , while they have a number of characters in common with true spiders . I therefore do not hesitate to leave the Hypochilidae among the Arachnomorphae until better evidence is furnished ...
... appear entirely isolated among the Mygalomorphae , while they have a number of characters in common with true spiders . I therefore do not hesitate to leave the Hypochilidae among the Arachnomorphae until better evidence is furnished ...
Seite 157
... appear early in the development represent ancestral characters antedating the separa- tion of the ancestral stock into the present families . At the same time it is quite possible that some character having more general value , and ...
... appear early in the development represent ancestral characters antedating the separa- tion of the ancestral stock into the present families . At the same time it is quite possible that some character having more general value , and ...
Seite 158
... appears comparatively early and is present in spiderlings before they leave the cocoon . Similarly the colulus is developed before even the traces of abdominal segmentation have dis- appeared . To give an idea of the changes which take ...
... appears comparatively early and is present in spiderlings before they leave the cocoon . Similarly the colulus is developed before even the traces of abdominal segmentation have dis- appeared . To give an idea of the changes which take ...
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
abdomen abdominal segments abdominal somite abdominal tergites anal operculum Anthracomarti appendages Arachnida Architarbi belong book-lungs British Museum carapace Carboniferous cephalothorax characters chelicerae claws Coal Measures convex Coseley Cryptomartus dorsal surface eighth Eophrynus Eoscorpius Eurypterida evolutionary trends eye-tubercle eyes Family femur fossil Arachnida fourth pair Fritsch front fused genera genital opening Genus Haptopoda Illinois State Museum intersegmental line joints lateral lungs Mazon Creek median line metatarsus mouth movable Ninth tergite operculum Opiliones Order pair of legs Palaeophonus Palaeozoic Palaeozoic Arachnida Palpigradi paratype patella pedal coxae pedipalpal coxae Petrunkevitch photograph Phrynichida Piece a shows Pleophrynus Pocock posterior edge present preserved priesti procurved Pruvost pygidium represented Ricinulei Schizomida sclerites scorpions Scudder second sternite shape shown in Figure side single spiders spinnerets spiracles sternite sternum structure tarsus tergal plates tergite Textfigure Thelyphonida tibia Total length transverse triangular Trigonotarbus trochanter tubercle ventral surface visible wider than long Xiphosura
Beliebte Passagen
Seite 144 - Monday evenings at 8:15 o'clock from October to May, inclusive, at the American Museum of Natural History, 77th Street and Central Park, West.
Seite 283 - Curculioides scaber (Sc udder) and Curculioides sulcatus Melander were described and figured by me on pp. 82 and 83 of my Monograph in 1913. Each is represented by a single specimen from the Pennsylvanian of Mazon Creek, Illinois. C. scaber is in the collection of the US National Museum (No. 37965); C. sulcatus in the collection of the Walker Museum of the University of Chicago (No. 9235). Curculioides gracilis Petrunkevitch, was described and figured by me in the Palaeozoic Arachnida of Illinois,...
Seite 297 - ... the juncture line of the two chelicerae. The carapace is anteriorly narrower than posteriorly. Its widest place is between the second and third pair of coxae where it measures 2.6 mm. while the length of the carapace is 3.5 mm. It is therefore distinctly longer than wide and oval in shape. Between the posterior edge of the carapace and the anterior edge of the abdomen a narrow space is bridged by the petiolus which has the shape of an elongated pentagon with the apex reaching the sternum and...
Seite 300 - XTV-XVI. 15. Demanet, Felix et Victor van Straelen. Classe des Arachnides. in: Renier, A., Stockmans, F., Demanet, F. et van Straelen, V. Flore et faune houillieres de la Belgique. Bruxelles. Third volume. 1938, pp. 206-209. Text-figures 82-84. Plate 140. 16. Dorlodot, J. de. Decouv. de Graeophonus anglicus dans le Couchant de Mons.
Seite 303 - Hunter, JRS (1886) Notes on the discovery of a fossil scorpion (Palaeophonus caledonicus) in the Silurian Strata of Logan Water, Tr.
Seite 309 - Ixodoidea zu den fossilen Anthracomarti. Sitzungsberichte u. Abhandl. Naturf. Gesell. Rostock. Dritte Folge, Vol. 3, 1932, pp. 104-126, figures 1-21. 123- Scudder, SH A contribution to our knowledge of Palaeozoic Arachnida. Proc. Amer. Acad. Arts and Sci., 1884, Vol. XX, pp. 15-22. 124. Note on Anthracomartus carbonis. CR Soc. Entomol. de Belgique, 1885, Vol. XXIX, pp. 84-85. 125. Systematic review of our present knowledge of fossil insects, myriapods and arachnids. US Geol. Survey, Bull. No 31,...
Seite 303 - ... Lesmahagow. Trans. Edinburgh Geol. Soc., 1888, Vol. V, pp. 185-191. 51. Iwanoff, PP Die embryonale Entwicklung von Limulus moluccanus. Zool. Jahrbiicher, Abt. f. Anat., 1933, Vol. 56, pp. 163348. 78 Text-figures. Plates 1-3. Bibliography. 52. Johansson, Gosta. Beitrage zur Kenntnis der Morphologie und Entwicklung des Gehirns von Limulus polyphemus. Acta Zoologica, 1933, Vol. XIV, 100 pages, 45 Text-figures. 53. Karsch, F. Ueber ein neues Spinnenthier aus der Schlesischen Steinkohle und die Arachnoiden...
Seite 310 - ... T. and G. Lindstrom. On a Silurian Scorpion from Gotland. Kongl. Svenska Vetenskaps-Akad. Handlingar, 1885, Vol. 21, No. 9, pp. 1-33. Plate. 135. Valchon, Max. Recherches anatomiques et biologiques sur la reproduction et le developpement des Pseudoscorpiones. These. Fac. Sci. Paris, 1938, Ser. A., No. 1779, pp. 1-208. Figures 1-161. 136. Verluys, J. Die Kiemen von Limulus und die Lungen der Arachniden.
Seite 134 - I assume to be the poison-gland. The segments resemble the fourth and fifth segments of Compsoscorpius elongatus. The fourth is square, 2.8 by 2.8 mm., the fifth is 5.0 mm. long and 2.8 mm. wide. This would mean that the total length of the scorpion to which the piece in question belonged was only a little greater than that of the type of C. elongatus. 2. Order PSEUDOSCORPIONES (Chelonethi) There are no representatives of this order in the Palaeozoic. Whether their absence is due to their belated...
Seite 180 - Cocoon either carried by the female holding it with her chelicerae, or if attached to the spinnerets then hemispherical in shape Family PISAURIDAE. * Upper claws with few teeth. Inferior claw smooth or with a single claw. Integuments usually with simple hair. Legs shorter, prograde without exception. Cocoon globular, carried by the female attached to her spinnerets. Posterior row of eyes usually so strongly recurved that the arrangement of the eyes may he said to be in three rows, in which case the...