34 ORDER COLEOPTEEA. 



is broader than the thorax, and the forehead is excavated : the eyes are huge and promi- 

 nent ; elytra Sat ; wings two. 



The larva' of the eicindelse have nearly the same habits as the perfect insert : they 

 construct their habitations in the ground, penetrating it to the depth of eighteen inches, 

 which labor is performed by means of their mandibles and legs. The hooks upon their 

 backs aid them efficiently in ascending and descending their burrows : by means of these 

 hooks or appendages, they suspend themselves at the mouthsof their holes, and await 1'. -r 

 their prey. 



The larvae are long, cylindric, soft, whitish grubs, and furnished with six feet. The In ad 

 and first joint of the body are described as metallic green above and brown beneath. The 

 head is quite large, armed with two long, sharp, and nearly vertical mandibles. Upon the 

 back there are fleshy tubercles clothed with hairs : each of these tubercles is armed with 

 a recurved horny spine. (See Plate xvii. figs. 9, 10, 11 : copied from Ratzberc, Forst. 

 Insecten.) 



Cicixdela vulgaris. ( Plate xvii, fig. 10.) 



Labium and base of the mandibles yellowish white. Elytra marked with three oblique 



lines, yellowish white and angulated : these lines are in the firm of lunules ; the 

 one past the middle is double. 

 Length of the male }*, of the female J of an inch. 



Sat in the Transact ions of the American Philosophical Society, New Series. I, 409; PI. xiii, fig. 1. 



This species appears early in the spring, continuing until about the first of June : It 

 reappears in August, and continues two months, and perhaps longer if the weather is 

 favorable. 



Cicixdela gexerosa. (Plate xvii, fig. 2.) 



G dor ohscurely cupi ous above. Elytra bright purplish or subviolaceous ; lateral margin 

 entire; humeral and terminal lunule broad and white ; intermediate band bent at a 

 right angle, and occupying nearly the centre of the elytron : at its extremity it is 

 widened, and extends nearly to the suture. 

 Length varying but little from | of an inch. 



Head is varied with cupreous and violet : the front is supplied with prostrate ashy hair. 

 Labrum white ; anterior edge furnished with three teeth. Antenna*, or their anterior 

 margins, cupreous. Mandibles with about | of the anterior and lateral portiu ins white, 

 the rest black- 

 Trunk cupreous, varied with violet ; sides hairy; thorax quadrate, and somewhat nar- 

 rowed behind. Elytra bright subviolaceous, deeply punctured with green. Feet and 

 thighs bright green, above brassy. Abdomen greenish blue, hairy ; tail purplish. 



