COLEOPTERA. 341 



the mentum. The two anterior legs are inserted on the sides of a compressed 

 sternum, and placed on a large platilla; the two posterior have a stout 

 trochanter at their origin; their first joint is large, appears to be confounded 

 with the postpectus, and forms a curvilinear triangle, with the exterior side 

 excavated. 



These insects pursue and devour others. Several have no wings under their 

 elytra. The anterior tarsi in most of the males are dilated or widened. 



The larvae 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, squamous, armed with two stout mandibles, recurved 

 at the point, and presents two short and conical antennae, two maxillae divided 

 into two branches, one of which is formed by a palpus, a ligula bearing two 

 palpi, shorter than the others, and six ocelli 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 larvae differ according to the genus. In those of the Cicindelae 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 ocelli, on each side, much 

 larger, and similar to those of the Lycosae. The superior plate of the first 

 segment is large, and forms a semicircular shield. There are two hooked 

 mammillae 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 ocelli are very small and 

 similar. The squamous piece of the first ring is square, and does not project 

 from the body. There are no mammillae on the eighth; and the last is termi- 

 nated by two conical appendages, exclusive of a membranous tube formed by 

 the prolongation of the end of the body. These appendages, in the larvae of 

 Calosoma and Carabas, 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 somewhat shorter, and the head a little larger. The mandibles of 

 both approach the form of those of the perfect insect. 



Some are aquatic, others terrestrial. 



The latter have legs exclusively adapted for running, the four posterior of 

 which are inserted at equal distances ; mandibles completely exposed ; the 

 terminal piece of the maxilla; straight ineriorly, and only curved at its extre- 

 mity; and most frequently an oblong body with projecting eyes. All their 

 tracheae are tubular or elastic. 



They are divided into two tribes. The first or the CICINDELET^E, Lat, 

 comprises the genus 



CICINDELA, Linnceus, 



In which the extremity of the maxillae is provided with a little nail articulated 

 with it by its base. 



The head is large, with great eyes, and very projecting and dentated man- 



