REVISION OF LISTROCHELUS SAYLOR 85 



punctate, with very short, suberect hairs. Abdomen widely, shallowly 

 concave at middle, first five segments sparsely punctate, with short 

 erect hairs; sixth segment a little shorter than the preceding, less 

 densely but more coarsely punctured, with a faint longitudinal median 

 sulcus. Claws of all the tarsi strongly pectinate along a double 

 margin, without larger intercalated teeth. First segment of hind 

 tarsus equal to second. 



Female. — Antennal club a little shorter than the funicle. Pygidium 

 convex but flattened, the entire disk very liiglily polished and smooth,^ 

 with fine and sparse punctures, each of the latter bearing a short, 

 suberect hair; apex rounded, with a row of coarse j^ellow bristles. All 

 tarsal claws serrate along a double line (rarely apparently only along a 

 single line) and each with a moderately large triangular tooth at about 

 the middle. Abdomen highly polished, slightly convex, with fine 

 punctures and short, sparse hairs, those of the subequal segments 5 

 and 6 somewhat longer. Otherwise similar to the male. 



Length. — 14-16.5 mm. Width. — 6.5-7 mm. 



Type. — In the Horn collection. 



Type locality. — "Arizona." 



Specimens examined: Males, 51; females, 9. Arizona: Pimal^ 

 Pima, Gila, Graham, and Cochise Counties, in the southeastern parts 

 of the State; July and August. New Mexico: 'New Mexico' 

 [U.S.N.M.l; Silver City, July 22 [Snow Museum]. 



Remarks. — This species and L. granti are quite conspicuous in the 

 genus by their rufous thorax and shining, testaceous elytra. Appar- 

 ently there is but little variation within the species. The females 

 are rare in collections. 



PHYLLOPHAGA (LISTROCHELUS) GRANTI. new species 



Figures 4, g; 5, d; 10, e-h; 13, j 



Male. — Elongate, subparallel, strongly shining; rufo testaceous, 

 the head and thorax rufous. Head with front coarsely and variolately 

 punctate, the punctures not contiguous and with several smaller 

 punctures intermixed; transverse carina strongly indicated, surface 

 behind it impunctate; base of clypeus faintly sinuate, hardly reflexed, 

 the angles broadly rounded. Antenna 10-segmented, unicolorous, 

 club one-fourth longer than the funicle. Thorax finely, not densely 

 punctate on disk, the punctures closer at sides and apex, a slight 

 median impunctate area visible; lateral margins with long cilia, 

 coarsely crenate, angles well indicated but obtuse; base with strong; 

 marginal line. Elytra finely, subrugosely punctate, with fine, short, 

 erect hairs; the striae on disk oblique and moderately prominent. 

 Pygidium strongly convex, highly polished, moderately coarsely and 

 not densely punctate, with short, suberect hairs; apex truncate and 



