Mar. 1899] Fall: On American Species of Acm^.odera. , 20 



7. Last ihree ventral segments densely finely punctate and clothed with long fine 



hairs which curve forward guttifera. 



Ventral segments normally punctate and pubescent 8 



8. Thorax densely cribrately punctate, size larger — .30 inch or more. , . . cribricollis. 

 Thorax more or less closely punctate but never cribrate at the middle ; size never 



exceeding .30 inch, and usually much less. 

 Elytra maculate. 



Larger, more pointed behind, clypeus very broadly emarginate. . .conoidea. 

 Smaller, less pointed behind, clypeus more deeply emarginate. 



Generally larger, more shining, elytral intervals wider, spots dis- 

 tinctly separated, front niipressed tubulus. 



Smaller, less shining, elytral intervals narrower, spots always con- 

 fluent, front convex neglecta. 



Elytra vittate quadrivlttata. 



6. Vestiture of under surface scale-like insignis. 



Vestiture of under surface hairy gemina. 



A. censors ^(^/vz, Trans. Am. Ent. Soc, VII, p. 20, PI. I, Fig. 30. 



I have seen only the type in the Leconte collection and can add 

 nothing to the original description. It is said to be distinguished 

 from any in this group by the sculpture of the prothorax being like 

 that of the preceding group. There is accordingly to the description 

 a "short subapical ventral carina," but in the present condition of 

 the type it is not sufficiently clearly visible to determine its character. 

 Length, 7.5 mm., .30 inch. 



Habitat : Texas. 

 A. pulchella I/crht, Col., IX, p. 211, PL CLIV, Fig. 6, a, b. 



Our most widely distributed and best known species. Length, 

 5.5-10 mm., .22-.40 inch. 



Habitat: Pennsylvania to Florida and westward to eastern 

 California. 



A specimen submitted by Professor Cockerell is labeled "Red 

 Mesa, N. Mex. , on Opimtia, June. ' ' 

 A. obtusa ^^r;;. Trans. Am. Ent Soc, VII, p. 19, PI. I, Fig. 29. 



Resembles some varieties of pulchella, but is inore obtuse behind 

 and with the thorax widest near the middle instead of at the base. 

 There is also a well-defined greenish-blue surface lustre in place of the 

 bronze of pulchella. The elytral fasciae are sometimes completely 

 broken up into small spots. Length, 8-10 mm., .32-. 40 inch.- 



Habitat : Texas. 

 A. alicia, sp. nov. 



Elongate, subcylindrical, black with faint tinge of blue, thorax with lateral mar- 



