Mar., 'lO] ENTOMOLOGICAL NEWS 121 



A very ordinary looking species, easily known from O. nig- 

 rifrons, wilmattae, pikei, etc., by the disc of the mesothorax, 

 which has large well separated punctures, with extremely small 

 punctures between them. It is related to O. leonis Ckll., but 

 that is larger and has the clypeus much more densely punc- 

 tured. 



Hab. Strawberry Valley, San Jacinto Mts., California, 6000 

 feet, July 16 (F. Grinnell, Jr.}. 



Osmia saiictae-rosae sp. nov. 



9 . Length about 8M; mm., moderately robust, fine deep indigo blue, 

 the abdomen brilliant and shining, though not equal to that of O. cohnl- 

 tina; pubescence black, including inner side of front tarsi and tuft be- 

 hind wings, but a little short glittering white hair on hinder part of disc 

 of thorax, and a quite conspicuous little pale patch on each side of hrst 

 abdominal segment, along the hind margin; mandibles evenly tridentatc, 

 the teeth all strong; clypeus normal, two little tufts of orange hair be- 

 neath lower edge ; punctures of head and thorax small and very dense ; 

 antennae black; tegulae shining blue; wings dilute fuscous, paler along 

 the veins ; second s. m. receiving first r. n. at least twice as far from 

 base as second from apex ; legs black, femora blue behind ; beneath the 

 femora have large concave smooth and shining areas for the reception 

 of the tibice ; scopa black. 



Related to 0. tristella Ckll., but with no white tuft behind 

 the wings, legs partly metallic, and venation different. The 

 less brilliant colors separated from O. cobaltina Cre,sson. 



Hab. Santa Rosa Mountains, California, 7500 ft., June 26 

 (F. Grinnell, Jr.} 0. cobaltina was taken by Mr. Grinnell on 

 Mt. Wilson, California, June 5, 1909. The male has the same 

 parallel-sided form as the female. 



Osmia pogonigera sp nov. 



$. Superficially like O. ivilmattac, with which T at first confused it, 

 but readily separable as follows: abdomen narrower and bluer, less 

 closely punctured; wings redder; hair of under side of prothorax white; 

 face with much glistening white hair, though coarse black hairs are in- 

 termixed; pleura denuded in type, but with some short white hairs, es 

 pecially behind; cheeks beneath with some white hair, but also with 

 long curled black bristles, forming a conspicuous beard. The last char- 

 acter is absolutely distinctive. Length about 10 mm.; legs black; sides 

 of metathorax with white hair; ventral scopa black; tegulae partly blue. 



