iV 



THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTOEY. 



[EIGHTH SERIES.] 

 No. 75. MARCH 1914. 



XXX. — Descriptions and Records of Bees. — LVII. 

 By T. D. A. CocKERELL, University of Colorado. 



Mesotrichia hakenana, sp. n. 



? . — Length about 20 ram., anterior wing 18|. 



llobust, black, with black hair, that on face inconspicu- 

 ously mixed with greyish white, that on cheeks wholly black 

 except a few pale hairs behind lower part of eyes. Wings 

 very dark fuliginous, with golden-green and ])urple tints. 

 Very close to M. aniuuruptera {Xylocopa amauroptcra, Perez), 

 but differing in the venation, the lower side of the second 

 s.m. being much more than twice as long as the upper and 

 little shorter than the lower side of the first. Also, the tibial 

 scale or process (large in amaurojjtera) is poorly develojxd, 

 a slender carina ending in an inconspicuous lamina. The 

 tarsi are not reddish brown apically as in arnanroptera, and 

 the hair on their inner side is wholly black. 



Compared with M. bombiformis (^Xylocopa hombiformis, 

 Sm.) our insect is distinguished by the well-punctured cheeks 

 and the extremely dark wings. 



Hab. Los Banos, Philippine Is. (C. F. Baker, 178G). 



Nomia nevadensis, Cress- on. 

 Grossmont, near San Diego, California ((7. //. Richardson). 



Triepcolus cressonii, Robertson. 



Quunah, Indian Territory, on Helianthus, June 10, 190G 

 (./. I). Mitchell). 



Ann. tO Mcuj. X. llist. Her. 8. \'ol. xiii. I'J 



