130 ORDER COI.EOPTF.RA 



Cassidida. 



Gem- CASSIDA. 

 lynly flattened and depressed : shield <>r elytra dilated on all sides, concealing the head 

 and bod] 



Cassida clavata. Tortoisi Untie. ( Plate xiv, fig. 11.) 



He d, j beneath, legs, and antennae luteoua : eyes black : middle of the elytra, with 

 the four angles black or dark brown; spaces between, together with the extended 

 clypeus lnteoas and translucent. 



Ooontota scutellaris ( Oliv.), IKspa scutellaris (Fab.). This insect has, in conjunc- 

 tion with Cecidomyia robtnia ( Bald.), b so abundant in Eastern Pennsylvania during 

 the last few years, that the foliage of the locust trees is killed towards the end of August, 

 as if by dry weather. It is nearly one-fourth of an inch long, of a tawny color, and marked 

 along the back with a black line. 



Chrysomelidae. 



Gents EUMOLPUS. 

 'Head vertical : antennae as long as the body, thickened at the tips* ( Westwcod) 



Ei'molpi/s aura-its ( Fab.). 

 Head, thorax, body beneath, and legs brilliant blue-green : elytra golden green. The feet 

 and antennae incline more to black, yet exhibit the coloring described. 

 It inhabits in great abundance ll"' . lj ocynvm andrcsamifolium ,and is found in July and 

 August. 



Gehus (HRYSOMELA. 



ClIRYSOMELA PBIXADEXPB1CA . ( Plate XJV, fig. 12.) 



Color of the body dark ginn . oblong, naked. Palpi, lees and antennae rufous : labium 

 hairy. Front and margins of the thorax ami elytra cream-colox : lines and spots of 

 the elytra, posterior segment of the thorax, and scute] green : inner margin of the 

 elytra traversed by two lines ; marginal line widened towards the scutel ; the proxi- 

 mate line widened also, and both slightly divergent. Lines punctured in rows sur- 

 rounding the entire thickened border. The shoulders of the elytra marked by two 



