344 PROCEEDINGS OF THE ACADEMY OF [1897. 



shorter; abdomen somewhat longer. The clypeus is quite ordinary, 

 its margin straight. 



Hab.— Olympia, Wash., May 10, 1894 (T. Kincaid). This would 

 be easily confused with pascoensis, if attention were not paid to the 

 details italicized. It is apparently the representative, in the north- 

 west, of the Colorado juxta and longula. The blue tint and the color 

 of the thoracic pubescence at once separates it from subornata. 



Osmia subpurpurea n. sp. 



$ . Length about 14 mm., relatively slender, dark steel blue, the 

 legs, antennae and mandibles black. Head subquadrate, rather 

 large, at least as broad as the thorax. Pubescence of face dull white 

 with a slight yellow tinge, with numerous black hairs intermixed ; of 

 cheeks pale ; of vertex long, thin and mostly black ; of thoracic 

 dorsum white with a slightly yellowish tinge, with longer black 

 hairs intermixed; of pleura sparse, dull white; of sides of meta- 

 thorax copious, white; of legs short and black, with some dull white 

 on femora behind, and dark fuscous on tarsi; of first abdominal 

 segment dull white and quite abundant; of remaining segments 

 very short, dark, hardly noticeable, except that the hind margins of 

 segments 2 to 5 present each a thin and narrow, but very visible, white 

 hair-band, and the short pile of the apical segment is pale. Ventral 

 scopa entirely black. Punctuation of vertex strong, but not so close 

 as to hide the shining surface ; of mesothorax very close, the surface 

 appearing roughened, dull and dark ; of abdomen minute and sparse 

 enough to leave a very shiny surface. Basal area of metathorax 

 dullish, with no high lights. Cheeks nearly twice as broad as eyes; 

 antennse short; clypeus ordinary, anterior margin straight; apical 

 tooth of mandibles moderately long ; hind spur of hind tibia stout, 

 and curved at tip ; outer end of middle tibia ending in an outwardly 

 projecting spine ; the same with anterior tibia? ; tegulse black ; wings 

 dusky ; second submarginal cell about as long (perhaps a little 

 shorter) as first on cubital nervure ; first recurrent nervure joining 

 second submarginal cell at about the end of its basal third, second 

 nearly at its end. 



Hab.— Olympia, Wash., May 25, 1894 (T. Kincaid). Larger 

 than 0. faceta, and differs by the formation of the clypeal margin, 

 etc. It is also allied to 0. purpurea, but differs in its much greater 

 size and in the pubescence. 



Osmia atrocyanea n. sp. 



9 . Length about 11 h mm., moderately robust, sides of abdomen 

 subparallel, head fairly large. Head, thorax and abdomen indigo- 



