THE CANADIAN ENTOMOLOGIST. IGO 



SOME NKW AMERICAN BEES. 



BV T. D. A. COCKERELL, BOULDER, COLORADO. 



Dioxys pomonce, n. sp. 

 $. — Length hardly 7 mm.; black, the thick flagellum dull reddish 

 beneath, eyes sage-green, tegulne entirely piceous, wings strongly dusky ; 

 subapical lateral spines of the abdomen sharp and conspicuous. By its 

 small size and general appearance this suggests D. Ro/iweri CkW., com- 

 pared with which it is more robust, with the head and thorax broader and 

 less hairy, the tegulne without red (largely red in Rohweri), the wings 

 considerably darker, the abdomen much more coarsely punctured, and 

 with acute subapical spines. Compared with D. Martii dVW., it is smaller, 

 with narrower abdominal bands and dark tegulae. The tarsi are some- 

 what reddish, but not so red as in Martii ; the spurs in both are red. The 

 first r. n. joins the second s. m. some distance from its base. In spite of 

 the greater superficial resemblance to D. Rohweri, the insect is most 

 nearly related to D. Mar/it. 



Bab. — Claremont, California. (C. F. Baker, 7221.) 



HoPLiTELLA, gen. nov. 

 A genus of small bees related to Os?ina, ffoplitis, qXc; colours red 

 and black, not metallic ; wings dusky ; stigma rather small, its part on 

 marginal cell less than first s. m. on marginal ; marginal rather obtusely 

 pointed, away from costa ; b. n. meeting t. m.; first r. n. joining second 

 s. m. very close to base, and second r. n. about twice as far from apex ; 

 basal middle of first abdominal segment smooth and shining, not separated 

 by a keel or ridge ; maxillary palpi 5Jointed, the joints measuring in ji : 

 (i) 70, (2) 102, (3) 120, (4) 85, (5) 50; the third is more slender than the 

 second; labial palpi with the joints measuring: (i) 6S0, (2) 1260, (3) 

 70, (4) 153 ; the second is about 153 broad at apex ; the third very short 

 and stout, almost heart-shaped ; the last slender basally, broadening 

 apically ; tongue reaching about to level of last joint of labial palpus ; 

 blade of maxilla very long and slender. Male with head and thorax finely 

 punctured ; labrum of the usual form, but only moderately long, iis apical 

 margin gently convex, the corners rather rounded ; mandibles strongly 

 bidentate j antennae simple, fiagellum slender; cheeks moderate, occipital 

 region of head not enlarged ; sixth abdominal segment with a strong red 

 tooth at each side, and its reddish hind margin slightly reflexed and 

 shallowly emarginate in the middle ; seventh segment broadly truncate, 

 the truncation deeply notched in the middle ; no ventral teeth. 



May, 1910 



