Records of Been, 127 



almost exactly like 0. hypochrysea liohweri^ Ckll., except 

 that the clypeiis is quite normal (not quadridentate) and the 

 disk of the mesothorax is very much more densely punctured. 

 The legs are blue. 



This certainly belongs to the subgenus Xanthosmia, but it 

 is not Robertson's X. cordata, being much smaller, with the 

 third antennal joint in the male nearly as long as the fourth. 



0. iridis from New Mexico, which also has the first ventral 

 segment (^J) emarginate, is easily separated from 0. Ramaleyi 

 by its larger size and the character of the hair on the abdomen. 



Osmia oUvacea, Ckll. 



This was described from a male, but Mrs. C. Bennett has 

 taken a female at Boulder, May 21, 1907, at flowers of 

 Astragalus gomatus. It is a remarkably fine insect, coloured 

 like the male, but nearly 12 mm. long, very robust, the 

 ventral scopa black ; coarse black hair on the clypeus, but 

 pale ochreous on sides of face, and these colours mixed on 

 front; hair of thorax above as in male; hair of pleura pale 

 ochreouSf rather scanty; clypeus normal; mandibles tri- 

 dentate, but the inner tooth broad and notched ; legs black, 

 not metallic. The abdomen is a very beautiful deep oliva- 

 ceous green, with some slight crimson stains. 



Also at the Astragalus gojiiatus, on the same day, 

 Mrs. Bennett took two females of Osmia nigrifrons, Cresson, 

 variety, and one of 0. coloradella, Ckll. 



Catltoxys Porterce, Ckll. 



Mr. N. Banks sends me a ? of this New Mexico species, 

 which ho took at Falls Church, Virginia, July 21 — a raosfc 

 unexpected extension of range. 



Melissodes Bol tonne, Robertson. 



Falls Church, Virginia, August and September {X. Banks). 



Very like M. j^&rplexa, but smaller. Differs from M. illata 

 by the smaller average size, band on middle of second abdo- 

 minal segment entire or almost, and tuft on end of hind 

 femora pale. 



Melissodes manipularis, Smith. 



Falls ("luirch, Virginia, 2 (J , one from flowers of JEupa- 

 torium, Sept. 4 {X. Banks). 



Much like M. trinodis, but differs by the black hair on 



