THE CANADIAN ENTOMOLOGIST. 365 



coarsely closely punctured posteriorly, anteriorly sparsely so. Postscutel- 

 lum finely roughened. Superior face of metathorax well defined, divided 

 into subquadrate, shining, regular pits, the enclosure funnel-shaped, 

 polished, the areas surrounding it opaque and weakly, irregularly rugose. 

 INIesopleura punctured similarly to, but coarser than the dorsal surface, 

 the tubercles inipunctate and polished. Pubescence of thorax thin, erect, 

 dull gray, strongly tinged with ochreous on dorsum. Wings darkened, 

 the nervures and stigma black. Tegulte black. Legs rather stout, black, 

 entirely clothed with stiff yellowish-white hair, very dense on inner surface 

 of legs, the tarsal tufts reddish. Claws rufous, medially toothed. Tibial 

 spurs very short, dark, quite simple. Anterior coxse with no indication 

 of a spine. Abdomen short, oval, polished, the basal segment subim- 

 punctate, following ones very finely, indistinctly punctured. Apical 

 margins of segments 1-4 feebly depressed, of 1-5 with broad, loose, white 

 fasciffi. Basal segment with sparse, long, white hair, the disks of 2-6 

 with erect black bristles, very long and abundant on 3-5. Ventral 

 segments i and 2 with a dense, erect, polleniferous scopa, concolorous 

 with that of posterior legs, 3 and 4 with similar dense apical fringes, 5 and 

 6 with black bristles. 



^. Length, 8 mm. Clypeus covered with long, dense ochreous- 

 gray hair, contrasting vv^ith the pure gray hair on rest of face, no black 

 hair on cheeks ; antennae long, joint 3 = 4, following joints one-third 

 longer than wide ; pubescence of thorax long and abundant, pure dull 

 gray ; basal abdominal segment sparsely, weakly punctured ; segment 2 

 with long white hair, like on i ; 3-6 with black bristles, no ventral scopa ; 

 claws subapically cleft ; no definite prothoracic spine. Otherwise 

 essentially like the $ . 



Types. — Waldoboro, Maine, July 9, 1905, No. 3721, 9; Ji-ily n, 

 1907, on Kalmia angustifolia. No. 4235, ^ . J. H. Lovell, collector. 



Paratypes. — Waldoboro, Maine, July 9, 1905, No. 3724 ; July 5 on 

 Rosa humilis, No. 1931, 9; July, 1904, No. 2697, ?• 



This species is very distinct. Its nearest ally is C. hyalinus, 

 Provancher, but it differs from that species in the punctuation of the 

 mesothorax and other details. Mr. Lovell informs me that this bee is a 

 frequent visitor of Kalmia angustifolia, but only rarely visits the rose. 



