H. C. FALL. 171 



Apex of posterior tibia feebly sinuate near the spur, the 

 latter scarcely one-third as long as the first tarsal joint. 



( Texas . ) ochraceiis Schf . 



Pubescence feebly condensed in a short line at the middle 

 of the third interspace ; first ventral of c? with a median 

 flattened area extending the length of the segment and 

 bordered, especially behind, with longer hairs.) South- 

 ern California.) collusus n. sp. 



Prothorax black, the elytra pale, with the suture, especially 

 toward the base, sometimes black or piceous, the dark 

 color often extending along the base and down the sides; 

 pubescence rather dense, luteous or pale ochreous ; first 

 ventral of male as in the preceding species. (New Mexico, 



Southern California.) perplexus n. sp. 



4. Apical spur of hind tibia short or moderate in length, rarely more 



than one-fourth as long as the first tarsal joint 5. 



Apical spur of hind tibia very long and slender, two-fifths to two- 

 thirds as long as the first tarsal joint. 

 Robust, elytral intervals with a row of coarse punctures; apical 

 spur of hind tibia about one-half the length of the first 

 tarsal joint; black, irregularly cinereo-pubescent, legs all 

 black (c?), or with the four anterior ones pale (9). 



( Georgia, Alabama. ) distinguendus Horn . 



Less stout, elytral intervals without coarse serial punctures. 

 Apical spur of hind tibia greatly developed, two-thirds as long 

 as the first tarsal joint. 

 Black, conspicuously variegated with cinereous pubescence, 

 a subtransverse median black spot towards the sides of 

 the elytra ; antenna; black throughout or very nearly so. 

 (Massachusetts, District of Columbia, Tennessee.) 



longistilus Horn. 

 Elytral markings as in the preceding, but more feebly con- 

 trasting ; prothorax more strongly rounded in front ; an- 

 tennas pale at base. (Southern Arizona.) 



pugiuncnlus n. sp. 

 Apical spur of hind tibia but little less than one-half the length 

 of the first tarsal joint. 

 Legs bicolored, elytra with a conspicuous blackish lateral 



spot. (Southern Arizona.) biustulllS n. sp. 



Legs black. 



Elytra with a conspicuous pale line at the middle of the 

 third interspace ; antenna? shorter and stouter, joints 4-10 

 as wide as or wider than long. (New Mexico.) 



pulloides n. sp. 



TRANS. AM. ENT. SOC, XXXVI. JULY, 1910. 



