72 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



Front tarsal spine weak, the width of segment at apex 

 about a third of total length (fig. 3, I); long hairs on 

 elytra variable, dense or not 30 



30 (29). Pygidium and propygidium moderately finely and regularly 



punctate, with short erect hairs; sides of thorax behind 

 median dilation nearly straight; thorax moderately 



densely and not finely punctate fimbripes (LeConte) 



Pygidium and propygidium more sparsely and finely 

 punctate, hair if present hardly noticeable; thorax 

 behind middle slightly sinuate, thoracic disk very finely 

 and not densely punctate parilis (Bates) 



31 (27). Pygidium convex and with moderately dense short hairs; 



claw serrate along a single margin; lateral thoracic mar- 

 gins very coarsely crenate, disk very convex (Texas and 



Mexico) scuticeps (Bates) 



Pygidium variable, with at most very short and sparse 



hair 32 



32 (31). Pygidium moderately convex, very highly polished, and 



very finely punctate; abdominal hairs moderately dense 

 at center and of moderate length; all claws serrate to 

 subpectinate along a double margin; entire lateral 

 thoracic margin coarsely crenate (Arizona and New 



Mexico) flavipennis (Horn) 



Pygidium flat to slightly convex, highly polished, and 

 finely punctate; abdominal hairs very fine and hardly 

 obvious; all claws serrate along a single margin 33 



33 (32). Lateral thoracic margins behind median dilation entire; 



front extremely densely and coarsely punctate; clypeal 

 angles narrowly rounded; prevailing color dark piceo- 



castaneous texensis, new species 



Lateral thoracic margins behind the dilation crenate; 

 front densely to sparsely jiunctate; clypeal angles 

 broadly rounded; prevailing color rufocastaneous to 

 ruf otestaceous wickhami, new species 



Genus PHYLLOPHAGA Harris 



Subgenus Listrochelus Blanchard 



PHYLLOPHAGA (LISTROCHELUS) MIRAFLORA. new speries 



Figures 5, i-n; 13, e-f 



Male. — Elongate, head and thorax strongly shining, elytra strongly 

 priiinose, with short, sparse, scarcely noticeable hair, otherwise 

 glabrous above. Color rufocastaneous to rufopiceous, the thorax 

 usually the darkest, Clypeus flat, base rarely a little elevated but 

 never gibbose, disk closely and moderately coarsely punctured; apex 

 subtruncate, faintly to slightly reflexed, sides nearly straight, the 

 angles narrowly rounded. Front flat, sparsely to moderately densely 

 punctate, not rugose. Antenna 10-segmented, club of lighter color 

 than the funicle and subec^ual to the latter in length. Prothorax 

 :regularly punctate, the punctures separated by one to one and one- 



