94 U.S. NATIONAL MUSEUM BULLETIN 2 90. 



Prosternum: Anterior margin in male rather distinctly produced 

 into a usually pointed lobe; anterior margin in female rather weakly 

 produced into a broad lobe. 



Length: 3.0 to 4.6 mm. 



Discussion. — In my opinion, Jacoby (1889, p. 108) has, at least in 

 part, misapplied the name trizonatus. In the discussion, he mentions 

 that the thoracic band in some specimens is connected with the base by 

 a narrow streak on each side, and the illustration (Table 3, figure 8) 

 is of such an individual. I believe that this represents a species similar 

 to but distinct from trizonatus, because in our Central American series, 

 I find individuals that agree Avith this description that are consistently 

 different from trizonatus in this character, and this character shows no 

 indication of being variable. I am unable to determine whether this 

 species is described. 



A single collection note refers to a specimen taken on "Anacua." 



Distribution. — The 45 specimens in the U.S. National Museum 

 are all from Brownsville, Texas, 



Cryptocephalus umbonatus Schaeflfer 



Figure 68 

 Cryptocephalus umbonatus Schaeflfer, 1906, p. 232. 



Proaotum: Light orange to red completely or in part, disk often 

 more darkly pigmented; punctation dual, larger punctures small to 

 moderate and coarse. 



Elytra: Light orange to orange, humerus and striae red to black, 

 with no markings. With eight rows of punctures (rarely with seven) 

 fifth and seventh rows more or less confused, sixth row quite con- 

 fused; punctures denser, more distinctly impressed than usual, a little 

 finer to apex; inner and outer rows distinct, usually clearly uniting at 

 apex. 



Prosternum: Anterior margin in male strongly produced into a 

 pointed, ventrally directed lobe; anterior margin in female produced 

 into a short, broad lobe. 



Length: 4.0 to 6.0 mm. 



Discussion. — Five cotypes are in the U.S. National Museum (one 

 male, four females) and all bear the type number 42308; they were 

 taken at Palmerly, Cochise County, Arizona. The single male (col- 

 lected in July) bears Schaeffer's determination label and is hereby 

 designated as lectotype. Three of the remaining types were taken in 

 July, one on July 15; the other two bear no exact date. One type was 

 taken on June 14. The original description gives the locality of collec- 

 tion as Huachuca Mountains, Arizona. 



In the types and in many of the other specimens on hand, the 

 elytra are waxy yellow, and the striae black and strongly contrasting 



