Dec. 1896.] LiNELL: On NoRTH AMERICAN ChRYSOMELAS. 199 



Thorax entirely green. 



Oval, green. Elytra pale with a broad, three or four times rami- 

 fied sutural vitta ; a larger curvate humeral and many 

 smaller spots, one of which is placed close to lateral margin 

 at middle. (East to Neb. and Tex.) 



C. scalaris Leconte. 



Like preceding but elytral markings narrow and subsutural stripe 



free. ( Eastern States to Neb.) . . C. philadelphica LinnL 



Markings broader, especially the humeral stripe, .var. spirese Say. 



Thorax pale, at least in part, lateral margin of elytra unspotted. 



Oval ferruginous. Thorax pale with ferruginous spots. Elytra 

 with numerous small black spots. (Mo. to Wash.) 



C. multipunctata Say. 



Oval, green. Thorax green or brown with pale. apical and lateral 



margins. Elytra pale with slender sutural ahd subsutural 



lines and numerous small spots, green. (Eastern States to 



Ore.) C. bigsbyana Kirby. 



Legs and epipleura black. 



Oval, convex, greenish black. Elytra with heavy black markings con- 

 nected, and enclosing angular pale spots. (Canada.) 



C. pnirsa Stal. 

 Epipleura of prothorax canaliculate. 

 Epipleura of elytra pale. 



Oval, convex, bluish black. Elytra pale with narrow black markings ; 

 sutural, subsutural and two parallel sinuous stripes from the 

 humeral region to beyond middle, the exterior one connected 

 with a humeral spot; several smaller spots posteriorly. (El 



Paso, Tex., Ariz., N. Mex., Mex.) C. dislocata Rogers. 



Like the preceding but the markings of elytra much broader and the 

 subsutural confluent with the sutural stripe. (Pac. States to 



Neb.) C. sigmoidea Leconte. 



Epipleura of elytra black. 

 Legs ixd. 



Elongate oval, bluish black. Elytra pale with strong black mark- 

 ings ; a sutural vitta trifid in front ; a long stripe from the 

 humerus arcuate towards suture before the middle, abruptly 

 parallel with suture to behind middle and again arcuately 

 bent and reflexed towards the margin ; an oval spot between 

 the humerus and scutellum, a V-shaped one at apex and sev- 

 eral on the sides of the disc ; also a marginal spot at middle. 



(Ariz., N. Mex.) C. serpentina Rogers. 



Legs black. 



Very small, globosely oval, black. Elytra with a broad black sut- 

 ural vitta> abreviated at base, and with about 9 large pale 

 spots surrounded by black rings ; a small marginal spot at 

 middle. Kans. (Collection Ulke), Mex. 



C. multiguttata Sthl. 



