CRYPTOCEPHALUS IN AMERICA NORTH OF MEXICO 89 



usually light at center, dark to black at side; metepisternum dark 

 brownish to (usually) black; abdomen usually black, ^vith sides, apex, 

 and center at base more or less light; legs irregularly dull orange to 

 irregularly light to dark browmsh, sometimes yellomsh evident; 

 anterior margin of prosternum in male produced ventrally into a 

 V-shaped lobe, that in female produced into a broadly U-shaped lobe. 



Length: 4.2 to 5.5 mm. 



Discussion. — Two paratypes of this subspecies are in the U.S. 

 National Museum, and I have seen a third paratype from theBurdette 

 Wliite collection. Of those in the USNM collection, one is a male, the 

 other a female; both bear the following data, "Carpintaria, California, 

 VII-2-36, Isocoma venetus vernoniodes , B. E. White collector." The 

 third paratype from the B. E. White collection (in the Cahfornia 

 Academy of Sciences) is a male and has the same data as above. 



In addition to the specimens enumerated, I have seen ten from Utah 

 (eight from St. George, Pine Valley, Mt. Carmel, Beaver Valley, 

 Believue, "Bucksk. Valley," and Cedar City) and California (two from 

 Santa Cruz) which I cannot definitely assign to this subspecies. They 

 differ in that the pro- and mesosterna are predominantly black or 

 dark and the legs are irregularly dark brown to completely black. The 

 color of the dorsal surface shows the same pattern and variation as 

 that of spurcus vandykei. More complete series may show the advisa- 

 bility of recognizing these as a new subspecies of spurcus, a move which 

 I do not now feel justified m making. 



A single specimen in the USNM collection from Parada, Mexico 

 determined as C. semimarginatus Jacoby is similar to s. vandykei but 

 lacks the dark vitta present on the second elytral interval of s. vandykei. 



Distribution. — The 19 specimens I have seen are from California, 

 Utah, Arizona, New Mexico, Colorado, and British Columbia. 



Cryptocepfialus striatulus Leconte 



Figure 38 

 Cryptocephalus striatulus Leconte, 1880, p. 204. 



Pronotum: Dull light orange, sometimes vaguely clouded with 

 blackish; surface usually alutaceous, punctation not or obscurely dual 

 (small punctures usually not visible), larger punctures quite large and 

 coarse. 



Elytra: Dull light orange, sometimes vaguely to distinctly clouded 

 with blackish (no pattern evident). With nine rows of even, never 

 confused punctures (excepting those of apex); punctures a httle 

 larger, denser than usual, finer at elytral apex; inner and outer rows 

 usually distinct at apex, sometimes clearly meeting, often obscured by 

 confused punctures and not meeting. 



