62 



Art.VII. — Analytical Notice of the S8th Number of the 'Annals and 

 Alai/azine of Natural History,'' dated January, 1841. Lon- 

 don : liicliard and John E. Taylor. 



Art. XLII. — Carahideous Insects collected by Charles Darwin, Esq., dur- 

 ing the Voyage of H.M.S. Beagle. By G, R. Waterhouse, Esq. 



In this portion of Mr- Waterhouse's communication, contained in 

 the January number of the 'Annals,' he has carefully and minutely de- 

 scribed six species of Carabideous insects, all of them from Maldonado, 

 La Plata. 



1. Brack hius maculipes. Black, with the head, prothorax, legs and 

 sternum ferruginous ; the knees black ; the antennge fuscescent, with 

 the 1st and 2nd joints ferruginous, the 3rd and 4th black; the elytra 

 are slightly costate. This insect much resembles Bra. crepitans, but 

 is twice the size, being 64 lines in length and 2|- in breadth : a single 

 specimen only was brought by Mr. Darwin. (Annals, vi. 351). 



2. BracJiinns Platensis. Ferruginous, with the elytra fuscescent- 

 black and slightly costate ; the abdomen blackish at the apex. This 

 species also resembles Bra. crepitans but is rather larger, being 4^ — 

 5 lines in length and 2 — 2i in breadth ; the 3rd and 4th joints of the 

 antennae are red instead of black ; the prothorax is longer and less di- 

 lated anteriorly ; the elytra are wider and more distinctly ridged. In 

 Mr. DanAin's collection are five specimens agi'eeing with the above 

 description, and a sixth differing only in being considerably larger. 

 Resembling these is another specimen, which differs from Bra. Pla- 

 tensis in having the head and prothorax impunctate, the latter shorter 

 and the striaj of the elytra less distinct ; and from Bra. crepitans it 

 further differs in having the four basal joints of the antennae red. Mr. 

 Waterhouse leaves it as a variety of Bra. Platensis. (Id. 351). 



3. Brachinus nigripes. Black, with the head, prothorax, sternum 

 and coxa3 ferruginous; the 1st joint of the antennae is black, tinted 

 with red at the base, the 2nd, 3rd and 4th joints are black, the rest 

 pitchy ; the legs are black, with red coxeb and pitchy tarsi ; sternum 

 centrally reddish, otherwise, as well as the abdomen and elytra black. 

 There are four specimens varying from 2^ — 3 lines in length and from 

 li— 1-i in breadth. (Id. 352). 



4. Chlanius violaceus. Black, above violet ; head punctured between 

 the eyes ; the prothorax is punctured, slightly narrowed posteriorly and 

 impressed with two fovesB ; the elytra are deeply striated, with the in- 

 terspaces slightly punctured and somewhat convex. There are but 



