454 CLASS INSECTA. 



narrow, with the thighs in a knob. The body is short and 

 thick. The scutel is wanting.* 



CiRCELLiuM, Latr., 



In which the body is hemispherical, gibbous, with the abdo- 

 men almost semi-circular, and the lateral edges of the corslet 

 straight, or not dilated in the middle. There is no scutellum. 

 The hood presents four or six denticulations. {Ateuchus 

 Bacchus, HollandicB, of Fab.) 



CopROBius, Latr. 



Equally without scutellum, and in which the body is ovoid, 

 not at all, or but little gibbous, with the middle of the lateral 

 edges of the corslet dilated, in the manner of a blunt, or 

 rounded angle, the abdomen almost square, and the hood 

 bidenticulated. These insects are more especially proper to 

 the New Continent.-f- 



The species whose four posterior limbs are proportionally 

 shorter, dilated or widened remarkably at their extremity, 

 with the fist articulations of the tarsi broader, compose the 

 genus Choeridium of M. Lepeletier de Saint Fargeau, and 

 Serville (Encyc. Method.). We shall unite again to the 

 Coprophili that which they name Hyhoma (ibid). 



Another sub-genus, bordering on the preceding, the species 

 of which are also American, that which they call jEschrotes, 

 but which M. Dalman had published (Ephem. Entom. 1824) 

 before them, under another denomination, that of 



EURYSTERNUS, 



Differs from the preceding by the presence of a scutellum . 

 The body is, otherwise, of an oblong-oval form, plain above, 



* Ateuchus SchcEfferi, Fab.; — Sc. longipes, Oliv., and some other unpub- 

 lished species of the Cape of Good Hope. 

 ■\ The A. volvens, violaceus, triangularis, G-2mnctatus, &c. of Fabricius. 



