358 REVISION OF THE TENEBRIONIDJE OF AMEKII \. 



punctured, interstices verj convex and sparsely punctured. The males have the anterior 

 tibiae slender al the basal fourth, then suddenly broader and parallel toward the apex. 

 Those of the female are similar to the preceding sp tcies. 



Length .19-.25 inch. 



Occurs at San Diego, Lower California, and Arizona. 



Ml the preceding species, excepting gagates, have ferruginous legs. 



i i is. n . <j. 



The above generic name is suggested for two species of Blapstinus differing from the 

 typical form in having the anterior tibiae more dilated, emargiuate at apex, with the outer 

 angle prolonged. The species resemble Trichoton. 



Thorax gradually narrowing from base to apex. obliquus. 



Thorax as wide at middle as at base. crassus. 



I obliquus, Lee, Blapstinus New Species, p. 117. 



The thorax gradually narrows from base to apex. The surface is sparsely clothed 

 with short brownish hairs. 

 I ,ength .'-VI inch. 

 From Cape San Lucas, Lower California. 



Y. crassus, Lee, Blapstinus) Ann. Lye. V.,146. 



The sides of the thorax are more strongly rounded and as wide at middle as at base. 



The vestiture of the surface consists of ochreous scale-like hairs, rather densely placed. 

 Length .22-,26 inch. 

 From around San Francisco, California. 



TRIBE XXII — OPATRINI. 



Mentum small, supported by a distinct gular peduncle; head deeply inserted, always 

 more or less emarginate in front; eyes variable, coarsely granulated, rarely divided; 

 labium visible; antennae gradually clavate or with the last three joints suddenly broader; 

 intercoxal process of abdomen usually broad, truncate ; anterior tibiae (of our genera) broad, 

 triangular, spurs distinct; tarsi of male not dilated. 



There can he no point of difference given between this tribe and the preceding that 

 will no1 he found subject to some exceptions. The simple tarsi of tin' male is that one 

 however, most to he relied on, taken in connection with other characters which, though 

 of small value, show this tribe to be abundantly a distinct type from the preceding. 

 Among these maj be classed the broader head, verj deeply inserted, almost concealing 

 the eyes from above, and with a more prominent epistoma. The mentum also, is simple, 

 never sub-trilohed as in many of the genera of l'edinini. The small number of genera in 



