H. C. FALL 331 



Head finely moderately closely punctate and dull, the sculpture nearly or 

 quite concealed by the dense pubescence; eyes separated in the male by twice 

 the length of the basal joint of the antennae; in the female by about two and a 

 half times the length of the basal joint : antennae slender anrj rather more than 

 half as long as the body in the male, shorter in the female, blackish, scarcely 

 paler at base. 



Prothorax subconical with sides broadly rounded, not ciuite one-half wider 

 than long, widest immediately before the base, the latter one-half wider than 

 the apex; surface somewhat shining, very minutely alutaceous, closely rather 

 finely punctate, with still finer interstitial punctures; red basal margin wider 

 laterally, involving fully one-haK of the side margins. 



Elytra not at all or scarcely wider at base than the prothorax, very slight Ij' 

 longer than wide, a little narrowed behind; surface alutaceous, dull; coarser 

 punctures serially or subserially arranged in great part except in the scutcUar 

 region; interstitial punctures moderately numerous but very small and incon- 

 spicuous. 



Beneath very densely pubescent; legs rather stout, middle and hind thighs 

 pale at extreme base; front claws not appreciably enlarged in the male. 



Length 3.7 to 5 mm.; width 2 to 2.7 mm. 



Distribution. — Arizona: Bill Williams' Fork (Snow); Hot Springs, June 

 24-27 (Barber and Schwarz); Williams, June (Wenzel). Described from 

 Chihuahua (Pinos Altos), Mexico. 



The large size, dense recumbent pubescence and color, render 

 this species instantly recognizable. 



8. Pachybrachys analis LeConte 



]Moderateh' robust, with sparse semi-erect pubescence. Pro- 

 thorax shining, \vith narrow smooth median line. Elytra more 

 or less densely subrugose punctate, less shining. Black, sides of 

 prothorax, lateral margins of elytra at base, and apex of elytra 

 testaceous; disk of prothorax and elytra either entirely black, or 

 more often variegated with testaceous. Ave. length 3.75 nmi. 

 Utah to Lower California. 



Head black or variegated with testaceous, front more or less longitudinally 

 impressed, punctuation rather dense and evenly distributed. Eyes remote, 

 separated in the male by a distance subequal to the length of the basal four 

 joints of the antennae or rather less than their own vertical length; in the 

 female by more than the vertical length. Antennae (male) moderately slender, 

 reaching the basal third of the elytra, the outer joints fully twice as long as 

 wide; in female not passing the humeri, outer joints scarcely twice as long as 

 wide. 



Prothorax rather long, one-fourth to two-fifths wider than long, more trans- 

 verse in the female as usual, apex seven-tenths as wide as the base, sides 

 moderately rounded, subparallel in basal half or less, especially in the male; 



TRANS. AM. ENT. SOC, XLI. 



