UDOTEA.

15

1. Ud. cancellata.-Form simple, not lobed, marked with numerous parallel lines, which are crossed by others equally strong, as well as by several concentric undulations.

The imperfect specimen figured is the only one which I have seen, so that its characters cannot be very correctly defined.

The annexed sketch (fig. 15.) will give a general idea of its appearance, though it does not mark the undulations so well as could be wished; it is drawn of the natural size.

It was found in the same locality as the other specimens.

ART. III.-Observations on the Lamellicorns of Olivier. By THE REV. F. W. HOPE, F.R.S., F.L.S., F.Z.S., &c.

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Sp. 2. alba. This is evidently the same insect as Scarabæus Hololeucus of Pallas; as the latter name was previously used by that author it ought to be retained sider it as belonging to Mr. Kirby's genus Lepidiota. Le Comte de Castelneau, however, ranges it with true Melolontha.

Sp. 3. Commersonii. This insect appears to be the same species which Fabricius has published under the name of

Mel. rorida, to which he has given Sumatra as the native country. Lepidiota Commersonii was originally brought from the Island of Madagascar, by the celebrated botanist Commerson. Possessing insects from both of the above. localities, and particularly a specimen named by Fabricius as Mel. rorida, I should have doubted their being identical had I not carefully examined them. It may be remarked, that Lepidiota, as a genus, is common to Asia and Africa, as well as some of the islands adjacent to the two continents. Sp. 4. serrata. Now an Holotrichia of Kirby. For the neric details refer to Hope's Coleopterist's Manual, page 99. The species seem from what is known at present, to be peculiar to Asia; they will no doubt eventually be found in tropical Africa.

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Sp. 6. villosa. This species, according to M. Laporte, belongs to his genus Anoxia. Vid. Hist. Nat. des Anim. (Articul.,) par Laporte de Castelnau, page 132; where the details are published. The following species belong to it, viz.: Mel. orientalis, Ziegler; Mel. occidentalis, Jab; and matutinalis and africana of Laporte.

Sp. 9. alopex. Now a Cephalotrichia of Kirby. It is probable that Mel. brunnipennis of Castelneau belongs to this genus. The Platyonix of Dr. Reich (since changed to the name of Sibaris, by Laporte,) seems closely allied to Cephalotrichia, differing chiefly in the form of the clypeus. The family name of Sparmannia has been suggested by the above writer to be given to these Melolonthida. Sp. 10. solstitialis. Latreille gave this species as the type of his genus Rhisotrogus; the term Amphimallon, which included under it all the species having nine joints to the antennæ, he afterwards re-united to Rhisotrogus. Laporte however, still retains Amphimallon, and singularly enough considers solstitialis one of the species; while he gives Mel. albus, Jab., and æstivus, Olivier, as examples of Rhisotrogus. Such changing of types creates great confusion, and never should be attempted. The Latreillian name

ought to be adopted, as originally used.

Various

Sp. 12. pini. Now a Microdonta of Kirby; Vid. details in
Hope's Coleopterist's Manual, part 1., p. 105.
European species belong to it.

Sp. 14. oblonga. In the Manual I was induced, on reference to Illiger's Magazine, to consider the Fabrician insect named oblonga, as an Anomala. Olivier's oblonga appears to be more allied to Rhisotrogus. The reference to Schrank's Enum. Insect. Austrice, No. 27, and to Scopoli's Entom. Carniol, No. 19, lead to that conclusion

Sp. 15. cornuta. Latreille makes this insect the type of his genus Pacyphus; Geotrupes excavatus, Jab., is the same insect. The Baron Dejean, in his catalogue, gives it the name of Calodera, I retain however, the Latreillian term, being averse to changing names without there is an absolute necessity for so doing.

Sp. 16. glauca. This is now a Pelidnota, and is the Scarabæus æruginosus of the "Systema" of Linnæus. The latter specific name should therefore be used instead of the former.

Sp. 19. lutea. This insect is probably a Pelidnota. No locality is mentioned by Olivier.

Sp. 20. elongata. Evidently the type of a new genus; apparently this would be a Philochlænea of De Jean. As that genus is not, I believe, yet published, I do not adopt the name, but leave it for a future describer.

Sp. 23. plebeia. This insect according to the French cabinets is an Anomala, and I think most probably is the same species as Anom. scutellaris of De Jean.

Sp. 27. rustica. It is impossible to say to what genus this species is allied from the figure. I am inclined to doubt the locality of Guadaloupe.

Sp. 31. viridis. Now an Euchlora of MacLeay: the species are more numerous than in the allied genus Mimela. Olivier gives the Cape of Good Hope as its locality; it is an East Indian species.

Sp. 32. Leii. A Mimela of Kirby. For an account of the species see my monograph in the first volume of the 'Entomological Transactions,' p. 116. No locality is given by Olivier: all the known species are peculiar to the East Indies. Sp. 33. bicolor. Olivier gives this insect as from the Cape, which is erroneous, as all the true Euchlora belong to Java and the East Indian continent.

Sp. 34. suturalis. This insect I make the type of the genus Stethaspis; it is probably the Xylonichus of the French cabinets.

Sp. 35. dubia. Now a Chalepus of MacLeay: the same insect is named geminatus by Fabricius. Sp. 36. angulata. No locality is given for this species by Olivier. It is evidently a Bolax of Comte Fischer de Waldeim, (vide 'Moscow Transactions' in loco), and most likely therefore inhabits Brazil.

Sp. 37. bimaculata. This insect was sent to me by Dr. Escholtz. The name of Trigonostoma has been given to it by the Baron Dejean; as that term is only found in the