H. C. FALL. 57 



The type is a cf from St. George, Utah, collected by Prof. 

 Wickham. With it I have placed several 9 's from Milford. 

 Utah, also collected by Wickham, which are doubtless identi- 

 cal although they differ constantly in the relatively shorter 

 second funicular joint. A 9 specimen labelled Santa Cruz, 

 California, is perfectly similar to the Utah ones except in its 

 larger area of dark scales, and is placed with them ; there is 

 possibly an error in locality. 



This species is a Cnemocylhis and may best follow canus, 

 from which it differs by its narrower form and intermixture of 

 dark scales. 



A. tenuis n. sp. — Also a Cnemocyllus. Very similar in form and 

 vestiture to the preceding species, the differences of moment being as 

 follows : The size in series is distinctly smaller, the general form even 

 narrower, vestiture white throughout, and in some examples at least, 

 a little less dense ; all of the femora apparently unarmed ; hind tibiae 

 of cf less strongly curved ; claws with longer teeth which are approxi- 

 mate at tip. Length, 1.6-1.9 mm. ; width, .65-. 75 mm. 



Type. — A cf from Ormsby County, Western Nevada 

 (Baker). 



Other localities represented are Goldfiield, Nevada (Nunen- 

 macher); Chad's Ranch, Utah (Wickham); Pocatello, Idaho 

 (Wickham); Bridgeport, California (Wickham); Santa Cruz, 

 California, this last locality open to doubt. 



This is one of the species that passes as nanus {=^can7is) 

 in collections. The true nan7isis not so narrow. It was de- 

 scribed from Texas, and probably does not occur at all in the 

 region occupied by the present species. 



A. jlllictlirvis n. sp. — Moderately elongate, parallel, brownish, 

 clothed above with subcontiguous broadly oval to narrowly oval feebly 

 contracting dull ochreous and pale brown scales, which are larger, 

 paler and somewhat denser in three thoracic vittae, alternating with 

 two broader stripes of narrower brownish scales. Elytra uniformly 

 clothed with pale ochreous scales which are barely visibly denser at 

 the middle of the fourth and toward the base of the sixth interspaces ; 

 beneath, sterna quite densely clothed with broad scales, the ventral 

 segments with sparser narrower scales. Beak about one-fourth longer 

 than the prothorax, moderately coarsely punctate striate, median line 

 narrowly smooth and feebly cariniform behind the antennal insertion. 

 Head squamose ; eyes separated by a little less than the basal width 



TRANS. AM. ENT. SCO. , XXXIX. (8) 



