ColeojUerological Notices^ VI. 535 



tate, the impressions feeble; epistoina rather long-, truncate, eniarjiinate at the 

 sides toward base as in serricollis; labrum about as long as Avide, strongly 

 rounded; eyes large and somewhat prominent; autennaj very much shorter 

 than the prothorax, rather slender but rapidly and very strongly iucrassate and 

 compressed toward apex, the last three joints very wide and asymmetric, the 

 eleventh as wide as long, tenth very strongly transverse, rrothorar fully as 

 long as wide, the sides parallel and jiist visibly arcuate, gradually and broadly 

 arcuate and convergent at apex, the angles completely obliterated, the true 

 apical margin not one-half as wide as the l)ase, the latter broadly arcuato- 

 trunoate; basal angles olituse and rather blunt but easily distinguishable; disk 

 rather finely and sparsely punctate, the lateral edges stronglj' serrate especiallj^ 

 toward apex. Elytra three-fifths longer than wide, slightly wider than the 

 prothorax and distinctly less than twice as long, parallel and straight at the 

 sides, not broadly rounded at apex, not very coarsely but strongly and some- 

 what densely punctured. Under surface moderately densely clothed with 

 similar cinereous pubescence. Length 2.8-3.8 mm.; Avidtli 0.95-1.5 mm. 



Arizona. 



Ill the aboA'e described male the corneous copiilfitory sheath 

 is large and cylindrical, with the lower surface ])roduced in a fine 

 slender point, the upper or posterior surface coriaceous and con- 

 cave, the efterent duct projecting between two wing-like plates 

 w^hicli partiall}' close the orifice. The prothorax of the male is 

 more elongate than in aii}' other dasytide form known to me, ex- 

 cept Meeomycter omaJinus. 



In the female the form is quite different, the prothorax being 

 much smaller, nearly one-fourth wider than long and narrowed 

 from base to apex, broadly rounded and scarceh' at all serrate 

 at the sides, the el3'tra longer though similar in shape, one-half 

 wider than the prothorax and two and one-half times as long. 

 Numerous specimens are before me. 



3. C. serrulatus Lee— Proc. Acad. Nat. Sci., Phila., 18G6, p. 350 (Pris- 

 toscelis). 



Oblong, stout, convex, black, moderately' shining ; legs black, 

 the tibije and tarsi rufo-piceous ; antennae black, the funicle tes- 

 taceous toward base, the two basal joints black; pubescence veiy 

 short, coarse, rather sparse, cinereous and intermixed Avith num- 

 erous long coai-se and erect black hairs ; marginal cilia of the 

 prothorax very long black and bristling, of the elytra much 

 shorter and nearly cinereous. Head two-thirds as wide as the 

 prothorax, strongly and sparsely punctate; epistoina long and 

 rather narrow, smooth ; labrum long, strongly rounded ; eyes 



