LECONTE ON ROCKY MOUNTAIN COLEOPTERA. 457 



alutaceous, with a narrow, smootli, inediaii stripe, not carinate. Spi- 

 nules of bind tibite unequal. Length 7.2'""' (0.29 inch). 



IsTortbern New Mexico ; one specimen, collected by Lieut. W. L. Car- 

 penter, United States Engineers, while attached to the Geographical 

 Survey West of 100°, under Lieut. George M. Wheeler. 



23. Aphodius subtrunoatus, n. sp. 



Elongate convex, piceous-black, shining, elytra, sides of prothorax, 

 antennae, palpi, and legs yellow. Head smooth, not tuberculate ; 

 epistpma margined, margin sparsely punctured, sabtruucate in front, 

 without angles ; gense prominent, rounded. Prothorax sparsely puuctu- 

 late, with some scattered punctures at the sides and towards the'base, 

 sides very finely margined, base and hind angles rounded, the former 

 very finely margined. Scutellura and sutural margin of elytra black ; 

 striae deep, punctured, interspaces slightly convex, scarcely punctulate, 

 slightly pubescent. Mesosternum opake, alutaceous, not carinate. 

 Spinules of hind tibiae unequal, some of them very long. Length 5™™ 

 (0.20 inch). 



Colorado (locality unknown) ; one specimen, collected by the Scientific 

 Expedition of the University of Kansas, given me by Prof. F. H. Snow ; 

 two others from Mr. Ulke. The pubescence is very easily abraded. 



24. Aphodius scabrioeps, n. sp. 



Elongate, cylindrical, brown, head and sides of prothorax yellow- 

 brown, legs, antennae, palpi, and elytra dull yellow. Head rugosely 

 punctured, almost scabrous in front, epistoma emarginate in front, with 

 broadly rounded angles : sides oblique, genae but slightly prominent. 

 Prothorax a little narrower in frcyit, with subacute angles, sides finely 

 margined, hind angles strongly rounded, base slightly bisiuuate, very 

 finely margined; surface not densely punctured. Scutellum dark 

 brown, sparsely punctured. Elytral striae strongly i)unctured, inter- 

 spaces slightly convex, each with an irregular row of small punctures. 

 Mesosternum nearly flat, opake, alutaceous, not carinate, slightly convex, 

 and shining at the middle in front. Spinules of hind tibiae unequal. 

 Length S™'" (0.12 inch). 



Colorado; a specimen, given me by Dr. Horn. This very pretty little 

 species is peculiar by the rough sculpture of the head, which seems to be 

 almost granulose in places; it resembles in this character A. rugifrons 

 Horn. It belongs, however, to a different group, as the spinules of the 

 hind tibiae are unequal, and should for the present remain in group L. 



25. Aphodius explanatus, n. sp. 



Elongate, convex, blackish-piceous ; antennae, palpi, legs, sides of pro- 

 thorax, and the elytra dull rufo-testaceous. Head with three very small 

 obsolete tubercles, finely punctured, epistoma broadly emarginate, 

 angles obtuse, not prominent, sides straight, oblique, finely margined, 

 Bull. iv. No. 2 10 



