COLEOPTERA. 267 



no wings under their elytra. The anterior tarsi in most of 

 the males are dilated or widened. 



The larvai also are very carnivorous. Their body is usually 

 cylindrical, elongated, and composed of twelve rings ; the 

 head, which is not included in this supputation, is large, squa- 

 mous, armed with two stout mandibles, recurved at the point, 

 and presents two short and conical antennse, two maxillae 

 divided into two branches, one of which is formed by a pal- 

 pus, a ligula bearing two palpi, shorter than the others, and 

 six small simple eyes on each side. The first annulus is 

 covered by a squamous plate ; the others are soft, or have but 

 little firmness. Each of the three first bears a pair of legs, 

 the extremity of which curves forwards. 



These larvsB differ according to the genus. In those of the 

 CicindelsB and of the Aristus bucephalus, the top of the head 

 is very concave in the middle, whilst its inferior portion is 

 convex. They have two small simple eyes, on each side, 

 much larger, and similar to those of the Lycosse. The supe- 

 rior plate of the first segment is large, and forms a semicircu- 

 lar shield. There are two hooked mammillse on the back of 

 the eighth annulus ; the last has no remarkable appendage. 



In the other larvae of this family which are known to us, 

 those of Omophron excepted, the head is weaker and more 

 equal. The simple eyes are very small and similar. The 

 squamous piece of the first riag is square, and does not pro- 

 ject from the body. There are no mammillse on the eighth; and 

 the last is terminated by two conical appendages, exclusive 

 of a membranous tube formed by the prolongation of that 

 part of the body which contains the anus. These appendages, 

 in the larvae of Calosoma and Carabus, are horny and dentated. 

 In those of Harpalus and Licinus, they are fleshy, articulated 

 and longer. The body of the larva of a Harpalus is some- 

 what shorter, and the head a little larger. The mandibles of 

 both approach the form of those of the perfect Insect. The 

 larva of the Omophron borde, according to the observations 

 of Desmarest, has a conical form, a large head, with two very 

 stout mandibles and but two eyes : the posterior extremity of 



