NORTH AMERICAN COLEOPTERA. 239 



The iibove genus is identical with that defined by Chapuis in the 

 " Genera." In his admirable monograph Foudras has divided the 

 genus into six, to which AVeise has added another for the German 

 fauna (Ins. Deutschl. vi, p. 686). From the species before me which 

 represent three of tlie genera,* while the three native species would 

 form three more, I am heartily in accord with Chapuis and Harold 

 in considering the difierences totally insufficient for generic se})ara- 

 tion. 



From those formerly enrolled in Crepidodera in our lists C. scab- 

 rlcu/a has been removed to form a genus Trichaltica in the Lacticites, 

 while 6'. basalts Crotch forms a distinct new genus. 



The following have been described by Boheman (Eugenies Resa), 

 and the localities are given so that others may draw their inferences : 



C. vafra Boh , loc. cit. p. 194. St. Francisco. 



C. S'utvrella Boh., p. 194. California (St. Franciscoj, Insula Puna. 



C. bicolor Boh., p. 195. California (St. Francisco), Taiti. 

 This is a very small insect, but .05 inch. long. 



C. ptibervla Boh., p. 196. Montevideo, California, Insula Puna, 

 Taiti et Oalui. 



This is doubtless an Epitrix. 



The localities of the Eugenies Resa material are notoriously badly 

 mixed, and no reliance can be placed uj)on them. As I have been 

 unable to identify them, notwithstanding all the collecting that has 

 been done in C'alifornia I think it best to omit them from our lists. 



The species known to me may be separated in the following 

 manner : 



Form oblong oval. 

 Head and thorax j-ellow, elytra bright blue ; prosternuni smooth ; thorax 



smooth riifipes. 



Head and thorax similar in color to the elytra. 

 Elytra uniform in coloration. 



Prothorax with very distinct and rather coarse punctuation. 



Form narrow, elongate; rufotestaeeous, with greenish surface lustre; 



prosteruum smooth loiigtilii. 



Form oval ; surface decidedly metallic ; thoracic punctuation abundant 



and intermixed ; prosternum sparsely punctate Hcl.Yiiies. 



Prothorax extrenjely finely punctate and very convex; color piceous 

 brown without metallic lustre ; prosternum densely and coarsely 

 punctured ; ninth stria rather distant from margin I'Obusta. 



* C. helxines is a Chalcoides; C. modeeri a Hii)pnriphila. and V. rnjipes a Dero- 

 crepis. 



