52 PROCEEDINGS OF THE ACADEMY OP 



3. P. obliquata (Lee. MSS.), sp- n. 



Allied to the preceding but broader; thorax more finely punc- 

 tate; elytra more finelj^ and less regularly punctate striate; dorsal 

 vitta more suddenly oblique at base; legs black. L. IG. Illinois. 

 Very near P. hannoverana of Europe, but with the thorax 

 finely punctate. 



6. Phyllodecta, Kirby. 



1. P. vulgatissima (Linn). 



Suffrian (I. c. p. 394) refers specimens received by him to this 

 species, from which they differ markedly in color, being gene- 

 rally purple; P.interslitialis, Mannh. appears to be founded on 

 a malformed specimen. 



^. GoNiocTENA, Chevr. 



1. G. arctica, Mannh. 



Of this species I have only seen two specimens from Kenai ; 

 it may be known by the black legs and pale tibiae; Suffrian refers 

 it with doubt to G. affinis, but it agrees better with his G.trian- 

 drae especially according to Thomson's description. 



2, G. pallida (Linn.). 



To this species I refer the G. rufipes of Rogers, and the G. sim- 

 plex, Suffr. It is very distinct bj'^ the anterior tibiae hardly den- 

 tate, and the sutural angle of the elytra produced. 



8. Plagiodera, Chev. 



a. Elongate, sides of thorax not thickened, claw joint dentate beneath. 



Unicolorous green. californica. 



Tliorax red, elytra blue. arizonce. 



b. Elongate, sides of thorax thickened. 



Claw-joint not dentate beneath. 



Thorax with the sides yellow, elytra variable. lapponica. 



Thorax green, elytra testaceous. tremulm. 

 Claw-joint dentate beneath. 



Elytra spotted, or unicolorous green. scripta. 



P^lytra purple, narrowly margined with yellow. obsoleta. 

 e. Globose, small, striate punctate {Phirdon Chcv.). 



a. Serial punctures fine, hardly stronger than the insterstitial ones, 



which arc numerous and visible. prasinella. 



