122 Mr. T. D. A. Cockerell — Descriptions and 



ill Albania. It probably refers to the south side of the 

 Elburz range. 



To the sheep of this locality I have given (1905) the name 

 Ovis Gmelini Ersldnei, but this will now have to give way 

 to 0. orientalis typica, while the Armenian race will have to 

 be called 0. orientalis Gmelini, Blyth^s specimens having 

 come from Erzerum. 



XXIII. — Descriptions and Records of Bees. — XVI. 

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



Osmia Bennettce, sp. n. 



(^ . — Length about 9 mm. 



Very brilliant, shining, Augochlora-gveen, with coppery 

 and golden tints on the face and niesothorax^ and a certain 

 amount of golden lustre on the abdomen ; antenna3 entirely 

 black, not moniliform ; clypeus with long white hair; hair of 

 front, vertex, and thorax above yellowish white or pale 

 yellowish, without any admixture of dark hairs except a very 

 {QVf about the ocelli ; tegulee brilliant green. Wings clear, 

 the apical margin a little dusky. Legs green, with mostly 

 pale hair, but some dark, e. g. the middle tibia has dark hairs 

 intermixed, and the middle basitarsus has much black hair. 

 Dorsal hair of abdomen partly light and partly black, the 

 black prevailing posteriorly ; apex of sixth segment very 

 feebly notched ; seventh bidentate ; venter with strong blue 

 or purple tints. 



From 0. gaudiosa, Ckll., this is easily known by its larger 

 size and the conspicuous black hair of the hinder part of the 

 abdomen. The size and green tegulse suggest affinity with 

 0. Bru7ieri, Ckll., but I do not think it can be the male of 

 that insect, the colour of the pubescence being so entirely 

 different. The quite different colour of the tegument is not 

 so important, as that may differ sexually in Osmia, e.g. in 

 0. versicolor, Latr. From 0. bella. Cress., it is readily 

 known by the absence of dark hair on the thorax above. 

 The width of the abdomen is 3 mm., thus much broader than 

 0. fulgida, Cress. 



Hab. Campus of University of Colorado, Boulder, Colorado, 

 at flowers of Taraxacum taraxacum^ May 8, 1907 {Mrs, C. 

 Bennett). 



