34 ORDER COLEOPTERA. 



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

 nent ; elytra flat ; wings two. 



The larvii' of the ciciudelse have nearly the same habits as the perfect insect : they 

 ooustrurt their habitations in the ground, penetrating it to the depth t>f eighteen iiiclies, 

 which labor is performed by means of their maiidil)les and legs. The hooks iijwn their 

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

 hooks or apjHjndages, they suspend themselves at the mouths of tlieir holes, and await for 

 their prey. 



The larvseare long, cylindric, soft, whitish grubs, and Airnished with six feet. The head 

 and first joint of the body are described as metallic green abov(! and brown beneath. The 

 head is quite large, armed with two long, sliarp, 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 Ratzbehg, Forst. 

 hutcten.) 



CiciKDEXA V0LGARIS. ( Plate xvH, fig. 10.) 



Labrum and base of the mandibles yellowish white. Elytra, marked with three ()l)lique 

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

 one past the middle is double. 

 Length of the male |J, of the female JJ of an inch. 



Sat in the Transactions 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. 



CiciNDELA GENERosA. ( Plate xvii, fig. 2.) 



Color obscurely cup: *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. Antennae, or their anterior 

 margins, cupreous. Mandibles with about § of the anterior and lateral portions 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. 



