196 Journal New York Entomological Society. [voi. iv. 



Leconte. It is dark blue, elytra reddish yellow with typically a common 

 large cruciform post-scutellar spot, an elongate triangular humeral spot 

 and a V-shaped subapical. The humeral and scutellar spots are often 

 confluent, forming a broad transverse band. The variety has the spots 

 broken up into smaller ones and occurs principally in Texas and Kansas. 



Genus Leptinotarsa Stdl. 

 ■Elytra unicolorous. 



Reddish yellow ; antennre, palpi, legs and scutellum black ; elytra punctate in 

 subgeminate striae. (Tex., N. Mex., Ariz., Mex.) " 



L. rubiginosa Rogers. 

 Dark cupreous green, very large ; elytra densely confusedly punctate ; intervals 



aciculate. (Southern Calif., Mex.) L. behrensi Harold. 



Black; elytra green or blue, finely irregularly punctate. (Tex., Ariz., Mex.) 



L. haldemani Rogers. 

 Elytra vitiate. 



Thorax immaculate. 



.(Eneous ; elytra yellow, irregularly bigeminately punctate, with four inter- 

 rupted aeneous vittce. (Tex., Ariz., Mex.) .... L. lineolata Stal. 

 yEneous black ; ventral surface and legs pale ; elytra regularly striate with 

 a narrow dorsal and a marginal vitta yellow. (Tex., Mex.) 



L. dahlbomi Stal. 



Rufescent; elytra pale, with suture, two discal vittse and margin piceous. 



(Lower Cal., Ariz. Collection Ulke.) . . . . L. petlinsularis Hortt. 



Black; elytra pale, regularly striate, each with four dark vitlae. (N. Mex,, 



Mex.) L. melanothorax Stdl. 



Thorax maculate. 



Ventral surface and legs entirely black. 



Elytra with suture, five vittre and epipleura black ; siux of confused 

 punctures. (Southern Calif, Mex.) L. undecimlineata Stal. 

 Ventral surface and legs yellow, maculate with black, 



Elytral strise of confused punctures ; suture and five vitta? black. 



Epipleura pale L. decemlineata Say. 



Epipleura black towards apex (Agua Negra, Tex., Mex.; 



L. multitaeniata Stal. 



Elytral stria; regular, punctures in single rows ; epipleura pale. 



Elytra each with five vittse, third and fourth approximate, often 

 united. (Southern States west to Kansas.) 



L. juncta Germar. 

 Elytra each with" four vittce, more or less abbreviated, third and 

 fourth not approximate. (Brownsville, Tex., Mex. ) 



L. defecta Stal. 

 Genus Zygogramma Chevrolat. 



Thorax brown with anterior angles pale ; intervals of elytra punctate. 



Oval, brown ; elytra pale, with the epipleura, suture and four vitlse black or 

 brown, the first vitta free ; the second interrupted near apex, leaving a 



