CHARLES SCHAEFFER. 277 



ISracliytarsus riddellite n. sp. — Elongate, narrow, in form very near 

 variegatus, ratlier densely clothed with greyish white pubescence, slightly varie- 

 gated on thorax and elytra with pale ochreous pubescence. Head flat; beak fee- 

 bly oblique each side, eyes lateral, anteniial cavities close to the eyes ; aiitennse 

 pale, club darker, first and second joints larger and stouter than the others, third 

 to fifth equal in length, sixth and seventh each slightly shorter than the fifth, 

 but equal to each other, eight slightly longer and a little stouter than the sev- 

 enth, club loosely jointed. Thorax broader at base than long, sides gradually 

 narrowing to apex, as usually dorsally longer than laterally ; carina feebly arcu- 

 ate at middle and scarcely reflexed at hind angles, surface densely pubescent 

 with grey and yellowish grey hairs. Elytra elongate, striate, strise feebly punc- 

 tate, intervals densely and finely punctate, pubescence grey, variegated with yel- 

 lowish grey, the latter forming on each elytron a not clearly defined basal spot 

 and a few indistinct spots near suture. Body beneath not very densely clothed 

 with white hairs. Legs testaceous, claws feebly cleft. Length 2 mm. 



Tucson, Arizona, collected on Riddellia bj Mr. E. A. Schwarz, 

 to whom I am indebted for the specimens. 



This species must be near griseus, but the hind angles are said to 

 be acute and the basal ridge to extend nearly one-half of the length 

 of the thorax at sides in that species. 



The color is variable, some specimens are uniformly grey, others 

 have the yellowish grey spots on the elytra more clearly defined. 



Brachy tarsus nigroniaculafus n. sp. — Narrow, elongate, form of 

 variegatus, color reddish testaceous; anteunal club and three spots on elytra 

 black, suture at apex and sides of abdomen infuscate. Head as usual, but the 

 beak not strongly oblique at sides. Thorax at base broader than long ; sides, be- 

 fore the bind angles, feebly sinuate, nearly parallel to about middle, then more 

 obliquely narrowing to apex; basal carina very feebly arcuate, not recurved at 

 sides, hind angles rectangular. Elytra striate, striae scarcely punctured, inter- 

 vals feebly rugose, pubescent with cinereous hairs, except on the spots, where the 

 pubescence is black, two of these are situated at base, the larger near the scutel- 

 lum and the smaller at the humeri, another one is situated slightly behind mid- 

 dle and is large and transverse, suture narrowly black and apex along suture 

 infuscated. Body beneath sparsely pubescent; legs pale, except apex of tibiae, 

 which are slightly darker, claws feebly cleft. Length 2.75 mm. 



Huachuca Mts.. Arizona, July. 



Readily known by the peculiar coloration. 



Brachytarsns beyeri n. sp. — Robust, of nearly the same form as tomen- 

 to.sus, but much larger and with coarser pubescence, which is yellowish grey and 

 more or less irrorated with darker spots on elytra; antennse and legs pale, 

 club of the latter darker. Thorax much wider at base than long, basal carina 

 slightly arcuate, rectangularly reflexed at sides, scarcely extending along the 

 sides, surface with sparsely placed large punctures, hidden by the dense pubes- 

 cense. Elytra scarcely twice as long as the thorax, striate, striae somewhat 



TR.4.NS. AM. ENT. SOC. XXXII. ' SEPTEMBER, 1906. 



