Cockerell — New American Bees. 183 



lower part of pleura, extreme base of abdomen, etc.; abdomen finely punc- 

 tured, delicately pniinope, tomentose at extreme lateral base of second seg- 

 ment ; the tomeiituin forming a band across third segment, and covering 

 the following ones, quite ochraceous on the last two ; scape clear red (rest 

 of antenna^ absent in type) ; clypeus convex, as closely punctured as pos- 

 sible ; ocelli large ; mandibles bidentate at apex, and witli the apical half 

 outside mainly shining orange ; maxillary palpi G-jointed, the second and 

 third very long, the last three small, the last two very miimte ; tegulse light 

 ferruginous; wings rather yellowish, nervures ferruginous. The hind 

 tibia and tarsi, with the black dots, the scopa, etc., are exactly as in A'. 

 pruhiosa, hut the hind spur is somewhat longer; the inner tooth of the 

 claws is considerably shorter than in pruinosa. The apical plate is broad. 

 Manifestly a Xmm/losKa, notwithstanding the palpi. It is smaller and much 

 duller colored than A', palricia. 



Habitat. — Utah (no other particulars known) ; in the Cresson collection. 

 Loaned through Mr. Viereck. 



Anthophora porterse semiflava var. nov. 



M(ih'.—L\ght hair of thorax above, first abdominal segment and occi- 

 put yellowish ; a long light fulvous tuft behind anterior ocellus. A color 

 variety only, but quite a striking one. 



Habitat.— Fort Collins, Colorado. May 28, 1904. S. A. Johmon. 



Diandrena nothocalaidis sp. nov. 



3fc(/c.— Length, 8 mm.; head, thorax and abdomen olive-green; legs, 

 antennae and mandibles black ; pubescence long and erect, pale ochraceous 

 dorsally, white on pleura, cheeks and face except at sides, where it is 

 black ; a little tuft of black hair above the top of each eye; head large, 

 facial quadrangle much broader than long; cheeks broad; tegulse shining 

 black ; stigma and nervures dull ferruginous, the latter quite light; base of 

 metathorax sliglitly longitudinally wrinkled. In all respects very close to 

 D. chdiybfea (Cress.), from the Pacific coast region, and Mr. Viereck sug- 

 gests that it may be a race of that insect. As the locality is so far from that 

 of cliali/lh'ea, Rnd my quite considerable series is constant, I treat it as a 

 distinct species. On May 17 my wife took two females, one at flowers of 

 Nofhoctdaifi, the other at Antennaria. The former is dark bluish-green (the 

 alKlomen bluer than the thorax), the latter dark olive-green ; but they are 

 manifestly conspecific. Length, just over 9 mm., diff'ering from D. chn/ybiea 

 by having the hair of the head all black, except that on the occiput, which 

 is partly pale, with a reddish tint; flagellum entirely black; hair of legs 

 black or sooty ; foin-th abdominal segment with a rather distinct pale and 

 slightly reddish hair-band; apical fimbria dilute black. The process of 

 labrum is emarginate, and the black facial foveae extend downwards only 

 to the level of the antennae, or an almost imperceptible distance beyond. 



i/^r/6;7fl^.— Boulder, Colorado, numerous at flowers of Nothocalais, May 3 

 and some days after. T. D. A. and W. P. Cockered. 



