Vc 



illi: ANNALS 



AND 



MAGAZINE OF NATURAL HlSTUliV 



[KIClllll Si:iME.S.l 



No. 87. MARCH 1015. 



XXI. — Descriptions aud Records of Bees. — LX\'. 

 IJy T. D. A. CocKF.KKLL, Univci^ity oF Colorado. 



Mesotricliia cnernosensis, sp. u. 



$ . — Lengtli about 23 mm., anterior wing 2-1. 



Very robust, black, thorax above (except a naked sraootli 

 sliining space in middle of niesolliDrax, marked anteriorly 

 by a groove) densely covered with siiort bright fox-red hair, 

 intermixed with black ; abdomen strongly aud rather eloselv 

 j)unctured, its hair entirely black, not hiding the surface. 

 Head broad ; face with mixed black and pale yellow isli hair ; 

 on vertex tlie hair is mostly black, but on occiput ferrugi- 

 nous, on posterior part of cheeks above yellow, paler lower 

 down, the lower part of cheeks with long black hair ; 

 mandibles bidentate ; labriim witli a very strong median 

 tubercle ; elypcus dull, very densely punctured, with a 

 raised but not shining median line ; ridge between antenmc 

 obtuse, very feebly grooved ; tliird antcunal joint a trifle 

 longer tlian next three together; flagellum, except basallv, 

 dull fenuginous beneath ; tubercUs and upper part of 

 j)leura with red hair, the rest with black ; teguhc black, 

 basally with red hair. \N'ings very dark fuliginous, with 

 rosy tints, the apical field with grceii ; first t.-c. incom|)kte 

 at lower end. Legs with black hair, anterior tibiic with a 

 fringe of yellow hair behind ; hind fen)ora with a small rtd 

 button-like spot or lobe on each side apically ; scale-like 



Ann. iL- Maj. S. Hist. Ser. 8. Vol. xv. 18 



