Records of Bees. 2i 



Chelostoma jacintanum, sp. n. (Cephalapis } subgen. nov.). 



£ . — Length a little over 8 mm. 



Black (including the legs) except the sides of the first two 

 abdominal segments, which are chestnut-red, the red more 

 extensive on the base of the first ; head and thorax vary 

 densely and minutely punctured, and with quite abundant 

 white hair; head large, quadrate, ivith very broad cheeks and 

 vertex, which are covered with appressed hair; face covered 

 with white hair; clypeus very densely and minutely punc- 

 tured, faintly carinate, the lower margin very obtusely angularly 

 produced in the middle, and with a minute denticle at each 

 side ; mandibles hairy basally, faintly reddish toward apex, 

 tridentate, the two apical teeth prominent, the third separated 

 by a long interval and easily overlooked; anttnnce short, like 

 those of a normal female of this group, the flagellum faintly 

 reddish beneath ; eyes large, very prominent, green ; ocelli 

 large, in a low triangle ; area o£ metathorax shining ; tegulas 

 shining, rufo-testaceous. Wings reddish hyaline ; s tig matte 

 part of marginal cell only about half as long as that bounding 

 first submarginal ; b. n. not quite reaching t.-m. ; second s.m. 

 w.th first r. n. joining it nearer, but not much nearer, its base 

 than second r. n. its apex, the distance of first r. n. from base 

 hardly half length of first t.-c. Legs normal, small, joints of 

 anterior tarsi tenuginous and of second slightly so; hind 

 temora bulging at base below ; hind spurs pallid, simple ; 

 pulvillus large. Abdomen shining, rather sparsely punctured; 

 hind margins of first five segments with narrow white hair- 

 bands ; basin of first segment not bounded by a transverse 

 carina / seven dorsal segments / sixth with the margin reddish 

 hy.dine, with a very low obtuse tooth on each side; seventh 

 black, produced into two large broad truncate teeth, the interval 

 between them about as great as the breadth of one ; five 

 ventral segments visible, fringed with pale hair, the fifth 

 emarginate, the disk of the second with punctures running in 

 transverse rows. 



Hub. Kenworthy, San Jacinto Mts., California, 5000 feet, 

 June 8 (F. Grinnell, Jr.). 



in Kobertson's table of Trypetine genera (Trans. Am. Ent. 

 Soc. xxix. p. i67) this runs out at 2, but on the whole comes 

 nearest to Alcidamea. It is far from being a typical Chelo- 

 stoma ; by reason of the characters italicized it may be 

 regarded as the type of a new subgenus or genus Cephalapis. 

 It is, perhaps, nearer to P roteriades than to Chelostoma. 



