Mr. Waterhouse on Carabideous Insects. 255 



added, that the insect last mentioned is a true Carabus, closely allied 

 to the Carabus Chilensis of Eschscholtz. 



Sp. 3. Cascellius Gravesii, Curtis, Trans. Linn. Soc, vol. xviii. 

 p. 183. 



In Mr. Darwin's collection are two specimens of this species, 

 both of which were found in Yuche Island, Chonos Archipelago ; 

 they are both of a brassy black colour, and have a slight coppery 

 hue : the basal joint of the antennae is red, and the remaining joints 

 are pitchy ; the thighs are also pitchy, but slightly tinted with red, 

 especially at the base, and the tibia? and tarsi are pitchy red. The 

 larger of the two specimens measures 5 j- lines in length. 



Sp. 4. Cascellius nitidus. — New species. 



C. viridis, nitore splendide aeneo vel cupreo ; corpore subtus, fe- 

 moribusque piceis ; antennis, palpis, tibiis tarsisque e piceo 

 rubris; thorace longiore plusquam lato, subcylindrico, anticfc 

 latiore, postice angustato, sulco dorsali mediocriter distincto, 

 nee non, et ante et post foveam transversa notato ; elytris, ex 

 elongate ovatis, postice latioribus, ad apicem rotundatis, me- 

 diocriter convexis, substriatis, striis impunctatis. 



Habitat apud Tierra del Fuego. 



This species is rather smaller than the C. Gravesii ; the thorax 

 and elytra are rather less convex than in that insect; the antennae 

 are rather shorter and less stout, and the striae of the elytra are more 

 delicate. 



The upper parts of the body are sometimes of a brilliant green 

 colour, and sometimes brassy with cupreous refections ; the under 

 parts are pitchy black ; the mandibles and labrum are pitchy, and 

 the palpi, as well as the legs, are either pitchy red or pitch-coloured ; 

 the tibiae are usually rather paler than the thighs and tarsi. The 

 head is rather narrower than the thorax, the eyes but moderately 

 prominent : the thorax is rather longer than broad, moderately con- 

 vex, broadest near the front and attenuated behind, and has the 

 sides slightly rounded ; the dorsal channel is moderately distinct, 

 and does not extend either to the anterior or posterior margins ; 

 a transverse impression is observable near the anterior margin, and 

 there is a faint trace of a similar impression on the hinder part of 

 the thorax : there are no posterior foveae, but the channels of the 

 lateral margins become rather more deeply impressed in the poste- 

 rior angles. The elytra are moderately convex, elongate-ovate 

 (their length being about once and a half their breadth), and smooth ; 

 the striae are rather indistinct, and do not extend to the apex of the 

 elytra ; those nearest the suture are the longest, and on the outer 

 margins they are obliterated ; they are impunctate and interrupted 

 in parts : on the apical portion of each elytron are two or three 

 large punctures. Length, from 4 J to 5 lines ; width, not quite 2 

 lines. 



Four specimens of this species were brought from Tierra del Fue- 

 go by Mr. Darwin. 



