Dec. 



Linell: On North American Chryso.melas. 197 



free spot; the fourth strongly abbreviated, with a free spot at the middle 

 of the sides. (Southern States to Mont, and Ariz. 



Z. exclamation is Fabricius. 



Oval, brown, smaller; elytra pale, with sutural and subsutural vittce confluent, 

 the second and third joining at two-thirds the length, a free spot near 

 apex and a very short fourth vitta behind the humerus ; epipleura pale. 

 (Kans., Neb., Mont., Dak.) Z. conjuncta Rogers. 



Like previous form but generally paler in color and the elytral vitlce broken up 

 into spots. (Kans., Dak., Mont.) Z. var pallida Bland. 



Oval, brown, of medium size ; elytra pale with brown vittse, the subsutural united 

 with the sutural; two broad discal vittre generally connected near apex 

 the fourth vitta entirely wanting; epipleura and the margin posteriorly 



brown. (Ariz., N. Mex., Colo., Utah) ,. .Z. continua Leconte. 



(syn. /asciatipennis JaCOBY.) 



Thorax unicolorous, brown or aeneous. 



Globosely oval, brown, slightly bronzed ; elytra pale with dark vittae ; subsut- 

 ural united with sutural, two confluent discal vittse, no isolated spots, 

 epipleura pale with dark margins. (East of Rocky Mts.). 



Z. SUturalis Fabricius. 

 Like previous form, but the subsutural and discal vittae free , var. casta Rogers.* 

 Globosely oval, brown, slightly bronzed; elytra pale with narrow vitta; ; the 

 subsutural free, slightly abbreviated ; the second and third sinuous, ab- 

 breviated and united at two-thirds the length; the fourth very short, 

 confluent at base with the third ; two or three isolated spots posteriorly ; 

 epipleura pale with brown margins. (Tex., Kans., Ariz.) 



Z. disrupta Jiog-ers. 

 Like previous form, but smaller and still more globose ; the second vitta twice 

 interrupted, the fourth represented by a spot only. (Tex., Col.) 



Z. heterothecae sp. nov.* 

 Oval, dark aeneous ; elytra pale with a sinuous vitta extending from the humerus 

 to near the suture one-fourth from apex, thickened at middle, hooklike at 

 apex and with a short humeral stripe attached to its base ; an oval spot 

 near the scutellum and three smaller ones posteriorly near the lateral mar- 

 gin ; sutural vitta striatopunctate, trifid at base ; epipleura and margin 



pale. (Tex.; Southern Ariz., Mex.) Z. malvae Stal. 



Oval, ferruginous ; elytra yellow with markings as in Z. mahnz, but subsutural 

 vitta free for at least half the length and the epipleura margined with 



brown. (Ariz., N. Mex.) Z. tortuosa Rogers 



Oval, brown, more or less bronzed ; elytra pale with a broad sutural vitta, rami- 

 fied before and behind the middle, a broad arcuate band from the 

 ' * Chrysomela /estiva Fabricius. " Nigrosenea, elytris lineis tribus suturaque 

 antica flavis. Statura C. fastuosce at duple minor. Habitat America." Suffrian 

 suggests that this may be identical with casta Rogers, but I can not see that the 

 description fits this or any other North American species. 



f Mr. E. A. Schwarz informs me that he collected this species in abundance at 

 Columbus, Texas, feeding on the leaves of the Composite plant, IJeterotheca scabra. 



