504 



COLEOrTERA. 



Pig. 496. 



their burrows." Ilispa (Uroplata) sv.turalis Fabr. miucs the 

 Locust tree, and ofteu proves ver}- destructive in the Middle 

 and Western States. They are flat, the body behind being 

 broad and square, and the el^'tra are geuerall}' ridged and 

 furrowed. 



Cassida auriclialcea Fabr., the yellow Helmet beetle, is hem- 

 ispherical, flattened, so that the edges of the wings are very 

 thin ; and the larva is broad, oval, 

 flattened, and by means of two spines 

 terminating its upturned abdomen, 

 holds its old cast larva skin over its 

 body as a means of protection. Dur- 

 ing the last week in Jul}' we have 

 found the larvai in all stages of 

 growth very abundant on the Morn- 

 ing-glory in our garden, eating holes in the leaves. In the 

 young the head and legs are more prominent than in the old. 

 It pupates the last of Jul}^ and early in August. 



The Chelymorpha crihraria Fabr. (Fig. 496 ; a, pupa) we 



have found in all its stages on the leaves of the silk-weed late 



in July and early in August, and in one instance in Salem it 



occui'red in abundance on the leaves of the raspberry-. The 



larva differs from that of Cassida aurichalcea, not onh' in its 



greater size, but the bod}' is thicker and narrower ; the head is 



freer from the thorax, and the spines are simple, not spinula- 



ted. The body is j^ellow and less protected by the cast skin. 



When about to transform, the larva attaches itself to the leaf 



by a silken thread, a few segments from the end where the 



end of the bod}^ of the future pupa is situated. 



^^\^^S|||kr It is .45 of an inch long. The pupa is broad 



^^^^''^W^'^ and rather flattened, dark and spotted with 



Fig. 497. 3'ellow and covered Avith a whitish powder, 



causing the j^ellow portions to appear more prominently ; along 



each side of the abdomen is a row of five spines, and there are 



four spines on the anterior edge of the prothorax ; it is .40 of 



an inch in length. 



Fig. 497 represents, according to Harris, " the larva, nearly 

 full size, of Galeruca gelatinarice Fabr. or an allied species, 

 fpund abundantljr on Ambrosia elatior, July 30th. They 



