NATURAL SCIENCES OF PHILADELPHIA. 



51 



30. C. auripennis, Say. 



Very variable in size and color ; G. cribraria, Rogers, has the 

 punctuation closer and more confused, but is not distinct. 



31. C. inornata, Rogers, 1. c. 



32. C. opacipennis, Rogers, \. c. 



Differs from the last only by thealutaceous surface of the elytra, 

 which is, however, slightly visible in C. inornata. Both these 

 species are very near C. auripennis. H 



3. Gastrophysa, Chev. 



a. Thorax and legs red. 



b. Elytra externally golden, suture purple. 



c. Unicolorous green or blue. 



1. Head sulcate, punctuation rough. 



2. Head flat, size small, punctuation fine. 



polygoni. 

 formosa. 



dtssimilis. 

 cyunea. 



1. C. polygoni, Linn. 



2. C. formosa, Say. 



This is probably the C. raphnai of Europe. 



3. C. dissimilis, Say. 



4. C. cyanea, Mels. 



I cannot separate the Californian C. csesia from this species. 



4. Entomoscelis, Chev. 

 1. C. Adonidis, Fab. 



Readily known by its opaque fulvous color, the suture and bi- 

 lateral vittse black. Hudson's Bay and Utah. 



5. Prasocuris, Latr. 



A. Elytral vittfe not confluent at the base. phellandrn. 



B. Elj'tral vittte confluent at base. 



a. Tibipe pale. varipes. 



b. Legs black. .' obliquata. 



1. P. Phellandrii (Linn.), Faun. Snec, p. 569. 



Illinois (Walsh). 



2. P. varipes (Lee. MSS.), sp. n. 



Elongate, narrow, brassy green, sides of thorax and elj'tra, and 

 a dorsal stripe on the latter fulvous; base of antennas, tibire, and 

 tarsi pale; thorax sparsely coarsely punctate, elj'tra deeply striate 

 punctate, interstices smooth, under surface coarsely punctate. L. 

 .15. Middle States, Canada, Lake Superior. 



