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 antenne is red, and the remaining joints 
are pitchy; the thighs are also pitchy, but slightly tinted with red, 
especially at the base, and the tibie and tarsi are pitchy red. The 
larger of the two specimens measures 53 lines in length. 
Sp. 4. Cascellius nitidus.—New species. 
C. viridis, nitore splendidé zneo vel cupreo ; corpore subtis, fe- 
moribusque piceis; antennis, palpis, tibiis tarsisque e piceo 
rubris ; thorace Jongiore plusquam lato, subcylindrico, anticé 
latiore, posticé angustato, sulco dorsali mediocritér distincto, 
nec non, et ante et post foveam transversa notato; elytris, ex 
elongato ovatis, posticé latioribus, ad apicem rotundatis, me- 
diocritér 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 antennz 
are rather shorter and less stout, and the strize 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 tibiz 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 fovez, 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 striz 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 43 to 5 lines; width, not quite 2 
lines. 
Four specimens of this species were brought from Tierra del Fue- 
go by Mr. Darwin, | 
