356 NEW SPECIES OF CARABIDEOUS INSECTS. 



Genus. — Odontoscelis^ Curtis. Cnemacanthus, Audouin 

 and BruUe. Cnemacanthus (sub-genus Cnemalohus) Guerin- 

 Meneville. 



Sp. 1. Odon. Tentyrio'ides, Curtis, Linn. Trans, vol. xviii. 

 part 2, page 187, plate 15, fig. D. 



Cnemacanthus ohscurus (?), BruUe, Hist. Nat. des Insectes, tome iv. 

 (bis), 2de livraisou, page 377. 



Two specimens agreeing in all respects (excepting in hav- 

 ing a blueish tint on the under side of the body and legs) 

 with Mr. Curtis's description, are in the collection of Mr. 

 Darwin ; they are from Valparaiso, the same locality as that 

 given by Mr. Curtis. 



Sp. 2. Odon. cyaneus, 

 Cnemacanthus cyaneus, Brulle, as above, page 376. 



Much larger than the last and of a blue colour : its length 

 is 10 lines (French measure), whilst Odon. Tentyrio'ides is 

 about 8 lines. Inhabits Chili. 



Sp. 3. Odon. Desmarestii. 



Cnemacanthus ( Cnemalohus) Desmarestii, Guerin-Meneville, Magasin 

 de Zoologie, Annee 1838, livraison 2me, page 9, plate 226 of class 

 ix. 



A very large species, from 26 to 30 ^ millemetres' in length. 

 It is black above, tinted with green on the margins of the 

 thorax and elytra. Inhabits Cordova. 



These are all the species of Odontoscelis which I can find 

 described; in the collection of Mr. Darwin there are four 

 others, the characters of which I shall proceed to point out. 



Sp. 4. Odon. Darwinii. Suppl. Plate xix. fig. 1, 



Otion.. latus, supra laevis, nitide viridis; pedibus corporeque subtus viola- 

 ceo-nigris ; antennis, mandibulis, palpis, tarsisque piceo colore obscure 

 tinctis. 



This species is from lOj to 11 J lines in length, and from 

 4| to 4J lines in width. The upper parts of head, thorax, 

 and abdomen are of a brilliant blue-green colour, the under 

 parts are black, and the legs, antennae, mandibles and palpi 



