254 Mr. Waterhouse on Carabideous Insects. 



XXVIII. — Carabideous Insects collected by Mr. Darwin 

 during the Voyage of Her Majesty's Ship Beagle. By 

 G. R. Waterhouse, Esq. 



[Continued from vol. iv. p. 362 of the Magazine of Natural History*.'] 

 Genus Cascellius. 



Mr. Curtis founds this genus upon two species brought by Capt. 

 P. P. King, one from Chile, and the other from Port St. Elena, and 

 described in the Linnsean Transactions, vol. xviii. part 2. 



Sp. 1. Cascellius Kingii, Curtis, Linn. Trans., vol. xviii. p. 183. 



Mr. Darwin's collection contains four specimens of this species, 

 three of which are from E. Chiloe, and the remaining one is from 

 Yuche Island, Chonos Archipelago. They vary but slightly in co- 

 louring, being of a green hue, more or less brilliant, and faintly 

 tinted with brass colour ; the legs are sometimes of an uniform pitchy 

 red tint, but more commonly, it would appear, the thighs are of a 

 darker colour than the tibise : in three of Mr. Darwin's specimens 

 they are pitchy black, obscurely tinted with reddish at the base. The 

 antennas being imperfect in Mr. Curtis's specimen, I may mention that 

 they are short and rather thick ; if bent backwards they would about 

 reach to the base of the thorax ; the basal joint is testaceous red, 

 the three cr four following joints are more or less suffused with 

 brown, and the apical joints are pale testaceous in all the specimens. 



Sp. 2. Feronia (Creobius) Eydouxii. — This insect, described by 

 M. Gu£rin-Meneville in the ' Magazin de Zoologie' for 1838, p. 4. 

 of Class IX., no doubt belongs to the genus Cascellius, and is closely 

 allied to the C. Kingii; but from the figure and description, it would' 

 appear that it may be distinguished by its larger size, and the uni- 

 form deep colouring of the legs and antennas. It is found in Peru, 

 near Lima. 



M. Guerin-Meneville observes that his Feronia Eydouxii "a beau- 

 coup d'affinites avec le Carabus suturalis," &c, " mais, suivant M. 

 Chevrolat, qui a vu le C. suturalis de la collection de Banks citee 

 par Fabricius, notre insect en est fort different;" he might have 



* At the end of this paper I intend giving a list of the species mentioned, 

 with references to the pages in which they are to be found, for the conve- 

 nience of those who may wish to refer to them ; I shall then also correct 

 any mistakes I may fall into, — provided I discover them. In the mean 

 time I may remark, that the generic name Odontoscelis, proposed by Mr. 

 Curtis and used by me in the first portion of this paper, had been previously 

 employed by Germar for a genus of Hemipterous insects ; I hope, there- 

 fore, Mr. Curtis will suggest some other name. I am informed that 

 Mr. Curtis's generic name Cardiophthalmus has also been previously used, 

 but cannot ascertain where. I find I had accidentally overlooked a speci- 

 men of the Cardiophthalmus Clivino'ides, Curtis, in Mr. Darwin's collection. 

 This specimen was " found dead in the sea, 40 miles off the Straits of Ma- 

 gellan." — Mr. Darwin's Notes. 



