38 [February, 



elytra dark green, coarsely punctured, antennae and legs black, under surface 

 blackish green. 



Length -18. 



This insect was sent by Col. Motschulsky, under the name of Plagiodera 

 californica, as coming from California, but I have been unable to find any 

 description of it. 



G. 



33. C. trivittata. Oblong, blue-black, head entirely blue-black, with an 

 impressed frontal line divaricated before ; thorax sparsely punctured, lateral 

 margins yellowish, this color being contracted in the middle on the inner side ; 

 elytra with punctured strise, sutural margin yellow ; vitta on the middle not 

 reaching the tip, and exterior edge blue-black ; legs black, tibiae ferruginous, 

 abdomen with the caudal segment margined behind with dull yellow. 



Length -15. 



Helodes trivittata Say, J. Acad. 5, 289. 



Locality. Middle States, Lake Superior. 



34. C. vitellinae. Oblong slightly oval, coppery violaceous, antennae with 

 first and second joint rufous ; thorax finely and sparsely punctured, elytra cop- 

 pery violaceous, punctured in rows with the interstices indistinctly punctured ; 

 under surface bronze black, legs black with the first joint of tarsi rufous. 



Length -16 -18. 



Phytodecta intellince Kirby, Faun. Bor. Amer. 216. 



Locality. Middle States, Western States and Lake Superior. 



One specimen from Lake Superior had the elytra black. 



H. 



35. C. V i r i d e . Rounded, dark green, head with an impressed frontal line, 

 thorax very finely and sparsely punctured ; scutellum blackish, elytra very finely 

 punctured in striae with the lines remote, antennae, legs and under surface 

 blackish. 



Length -12 -16. 



Gastrophysa viride Mel.". Pro. Acad. 3, 175. 



Locality. Middle States. 



3G. C. dissimilis. Oblong oval, metallic blue or green, head impressed 

 between the antennse, antennte black, thorax regularly convex, lateral edges re- 

 gularly curved, scutellum impunctured, elytra densely punctured, legs and under 

 surface black, posterior angles of thorax very obtuse and rounded. 



Length -24. 



Say, J. Acad. 3, 451. 



Locality. Nebraska. 



Varies in its colors. It is sometimes of a very dark purple, and sometimes of a 

 bright green, more or less tinged with violaceous, particularly about the suture. 



37. C. caesia. Oblong oval, brilliant metallic green, head and thorax 

 densely punctured with the posterior angles of the thorax obtuse, elytra metal- 

 lic green, finely punctured, legs and under surface blackish green. 



Length -21 -23. 



Locality. California, at San Francisco. 



The thorax is very perceptibly narrower than the elytra ; and the body is 

 longer and more convex than C. cyanea. 

 One specimen is blackish. 



38. C. cyanea. Oblong oval, purplish, head and thorax densely punctured, 

 elytra purplish, densely punctured, antennae legs and under surface purplish 

 black. 



Gastrophysa cyanea Mels. Pr. Acad. 3, 175. 



