H. C. FALL. 179 



rather stout, armed with an acute tooth, and two denticles well sepa- 

 rated from the tooth ; spur of hind tibia nearly half the length of the 

 first tarsal joint ; tibia distinctly finely carinate externally for its entire 

 length. Length, 1.7 mm. ; width, .9 mm. 



Santa Rita Mountains, Arizona (Snow). 



Closely allied to paicperculus and pulloides in general struc- 

 ture and vestiture, and especially in the long spur of the hind 

 tibia, but of more striking appearance because of the con- 

 spicuous blackish sublateral elytral spot. From pulloides, to 

 which it is closest, it differs, furthermore, in its shorter an- 

 tennae (the types of both species being apparently males), 

 bicolored legs and distinctly stouter hind femora. The hind 

 tibia; are in biushdus evidently, though finely, carinate on 

 their outer face throughout their length; in pulloides the 

 carina is evident only toward the apex, and in pauperaihis is 

 nearly or quite lacking. 



B. pulloides n. sp. 



Strikingly similar to piillus in form, size and markings. Entirely 

 black, pubescence cinereous, somewhat obscurely mottled with brown- 

 ish-ochreous. Antennae rather long, passing the elytral humeri, joints 

 4 and 5 as wide as long, 6-10 transverse, scarcely serrate. Head dull, 

 alutaceous, front finely not closely punctate, occiput more densely 

 punctured ; eyes separated by slightly less than their own width. 

 Prothorax wider than long, sides moderately convergent from the base 

 to beyond the middle, thence rounded and more strongly convergent 

 to apex ; moderately coarsely not closely punctate, cinereo-pubescent 

 with a longitudinal median stripe of brownish-ochreous occupying the 

 middle third and divided by a feeble imperfect longitudinal line of 

 pale hairs. Elytra mottled nearly as in pullus, a somewhat conspicu- 

 ous pale line at the middle of the third interspace, and before, external 

 to and behind this spots of brownish-ochreous. Pygidium convex and 

 feebly oblique, apexinfiexed, rather densely punctate, unevenly cinereo- 

 pubescent. Legs black throughout, hind femora not very stout, hind 

 tibiae feebly carinate externally, the terminal spur one-half the length 

 of the first tarsal joint. Length, 1.8 mm. ; width, 1.1 mm. 



Pecos, New Mexico. One male, received from Professor 

 Cockerell. 



This species differs from pullus most noticeably in its 

 entirely black legs and antennae (perhaps not constant) and 

 the much longer spur of the hind tibiae. In the latter par- 

 ticular it agrees with pauperculus, with which I had at first as- 



TRANS. AM. ENT. SOC, XXXVI. JULY, 1910. 



