34 



THE CANADIAN ENTOMOLOGIST. 



^. ., ^ , It should be remarked that cvida is a 



\^iS-^ V JiST J Pacific Coast species (found in Oregon), of 



which I have seen no Canadian examples ; 

 while foliacea is Southern, occurring in Texas, 

 Colorado, New Mexico, and Arizona. H. itice- 



frata, Lee, is synonymous with igniia. 

 (Fig. 6 represents the larva and beetle of 

 J{_.^^' H. chalybea, and a leg of the latter, showing the 



Fig. 6. greatly thickened thigh.) 



Crepidodera, Chevr. 



The best known species of this genus is Crepidodera helxines, a 

 bright metallic blue or green flea beetle, very commonly found on 

 willows. All of the members belonging here are quite small, and do not 

 resemble each other at all closely, so that reference should be had to the 

 generic characters (as laid down in the table of genera) before trying to 

 place any presumed Crepidoderas by the following specific analysis, 

 which is that of Dr. Horn : 



Form oblong oval; elytra uniform in colour with the head and thorax, 

 surface metallic, blue or green ; thoracic punctuation abundant, 



intermixed. .09-. 13 in helxmes, Linn. 



Form oval, narrowed in front ; colour piceous, with slight aeneous 

 lustre, apical third of elytra indeterminately testaceous. .08-. 10 



in fnodeeri, Linn. 



Form broadly oval and convex; colour rufotestaceous, without metallic 

 lustre ; abdomen piceous, prothorax not distinctly punctured. 

 .06-. 07 in atrive?itris, Mels. 



Epitrix, Foudras. 



Contains one Canadian species, E. cuaimeris, Harr., the " cucum- 

 ber flea beetle " (fig. 7), which is ofcen found very abundant ^^j 

 on potato vines. It is a small (.06 to .08 in.), ovate, slightly ytfirv 

 oblong beetle, nearly black in colour, the legs reddish or VVih 

 brownish, femora often darker. It may easily be told from any yu,. 7. 

 of the Crepidoderas or other genera which mighc otherwise resemble it, 

 in our fauna, by the fact that the upper surface is pubescent. The 

 thoracic punctures are well separated from each other; the elytral striae, 

 especially near the suture, very feeble. 



