COLEOPTEKA. — CARABID7E. ^ 65 



Structure than the majority of the family. Tlicy are also cha- 

 racterised in many instances by having the tarsi dilated, and the 

 penultimate joint more or less bilobed in both sexes, a peculiarity re- 

 sulting, as Bonelli has observed {Mem. Acad. Turin, vol.xxiii.), from 

 the situations in which they reside, this structure being in fact ana- 

 logous to the cushioned feet of flies as well as of those of the true 

 herbivorous Beetles. M. Lacordaire has confirmed these observations 

 in his account of the habits of the Brazilian Coleoptera {Ann. Sc. Nat., 

 June, 1830). 



The internal anatomy of the Carabidse has been investigated by 

 M. Dufour, in the Anfiales des Sciences Nalurelles, for August, Oc- 

 tober, and December, 1824'. Ramdohr also has published an account 

 of the anatomy of Carabus monilis, in the Magazin Geselhch. Na- 

 turf, zu Berlin, vol. i. ; and Dr. Burmeister's Memoir on the Anatomy 

 of the Larva of Calosoma, published in the Transactions of the Ento- 

 mological Society, vol. i., must also be mentioned. 



Few observations have hitherto been made relative to the larvce of 

 this family : this may indeed, perhaps, be partially accounted for, 

 from the obscure situations in which they are found, and from the 

 difficulty of rearing them. Those, however, which have been noticed, 

 are equally voracious with the perfect insects, and are found in simi- 

 lar situations : they are generally long, with the body of equal breadth 

 throughout, and the head of a moderate size, with the rudimental 

 eyes equal ; a scaly square prothorax, and with the eighth segment 

 simple, and resembling the remaining joints: the terminal segment 

 is, however, armed with two conical horny appendages, toothed in 

 the Carabi and Calosomaa, but (according to Latreiile, whose state- 

 ment I am, however, inclined to doubt) long, fleshy, and articulated 

 in the larvge of the Harpali and Licini ; in the latter, also, the body 

 is shorter and the head larger. The part where the anus is situated 

 is prolonged into a membranous deflexed tube, which serves as a sup- 

 port to the tail: the jaws resemble those of the perfect insect. 



The larvae of Ditomus hucephalus, however, according to Latreiile 

 [Regne An. second edit. t. iv. 190.), resemble those of the Cicindelae, 

 whilst that of Omophron decidedly approaches the form of those of 

 the Water-beetles (Dyticidae). 



One of the most voracious larvae in the family, is that of Calosoma 

 Sycophanta, first described by Reaumur, in the third volume of his 

 Memoircs. It is black, with six scaly legs : when full-grown it is 



F 



