382 MACLURIAN LYCEUM. 



nally striated, violaceous, the collar punctured, green ; scutel 

 much elongated, entire ; wings dusky on the apical half ; abdo- 

 men very short, wide, triangular, very convex above and beneath ; 

 anterior half violaceous, posterior half, green with a violaceous 

 reflection ; tarsi yellow. 



Length one-fifth of an inch. 



2. P. hyalinus. — Green; wings hyaline. 



Inhabits Pennsylvania. 



Body green punctured ; scutel much elongated, slightly emar- 

 ginated; wings hyaline, immaculate; abdomen very short, wide, 

 triangular, very convex above and beneath, violaceous ; tarsi yel- 

 lowish ; anterior tibiae honey-yellow. 



Length less than one-fifth of an inch. 



Differs from the preceding in being destitute of the dusky wing 

 tips and in having punctures instead of striae. 



SPALANGIUS Latr. 



S. POLITUS. — Bluish-green ; tergum with a cupreous band at 

 base. 



Inhabits Virginia. 



Body bluish-green, varied with violaceous, densely punctured; 

 front grooved to receive the basal joint of the antennae; flagellum 

 fuscous ; wings hyaline, slightly dusky ; scutel somewhat promi- 

 nent ; abdomen a little depressed ; first segment brilliant cupre- 

 ous : incisures glabrous ; terminal segment longer than the others 

 together, forming at tip a narrowed, carinated black [80] process 

 for the reception of the tip of the oviduct beneath ; feet dull 

 honey-yellow. 



Length 9 seven-twentieths of an inch. 



I found this species on the sea beach of Senipuxent Island. 



CODRUS Jur. 



C. pallidtjs. — Pale honey-yellow. 



Inhabits Indiana. 



Body pale honey -yellow ; antennae, excepting the basal joint, 

 fuscous ; stethidium, incisures black ; wings hyaline : stigma dis- 

 tinct, pale brown. 



Length nearly three-tenths of an inch. 



