Records of Bees. 447 



on front ; flagellum long, dark, submoniliform ; legs black, 

 not metallic, their hair partly black and partly pale ; tarsi 

 normal, but the last joint red and rather elongate. Wings 

 hyaline, a little stained along the veins. Abdomen subglobose, 

 hind margins of segments very narrowly reddish ; third and 

 following segments with short black hair ; sixth witli a small 

 notch; seventh bidentate ; first ventral normal ; third ventral 

 with a semicircle of long pale orange hairs in the median emar- 

 gination ; fourth broadly elevated in the middle, the long 

 margin of the elevation ciliate with black hairs. 



In the Florissant table runs to O. faceta, and it agrees 

 with certain Rocky ]\lountain males which I have called 

 faceta ; but the real faceta is a steel-blue insect allied to 

 O. chah/hia. In the Boulder County table it runs to 

 O. aprilina, which is, however, a smaller species, with the 

 hair a different colour and the flagellum not submoniliform. 

 Disregarding tlie few black hairs at sides of vertex, it rutis 

 to Wheeleri <i\\(\ cyaneonitens. 0. TF//ee/6r^ is easily separated 

 from it by the absence of the jjcculiar characters of the third 

 and fourth ventral segments, as well as the narrower form 

 and different colour of the abdomen ; 0. cyaneonitens is 

 considerably larger, and also lacks the semicircle of orange 

 hairs on the under side of the abdomen. 



Hub. Florissant, Colorado (type-locality), at flowers of 

 Senecio tridenticuJata, June 26 (^S. A. liohwer). Top of 

 Las Vegas Range, New Mexico, 11,000 ft., June 2S 

 ( Cockerell). 



Osmia amala, sp. n.^ 



^ . — Length about 9 mm. 



Head and thorax very densely punctured, but glittering, 

 dark blue, giving way to green on cly|)eus and rnesothorax ; 

 abdomen broad-ovate, brilliant purple-blue, the hind margins 

 of the segments narrowly rufous ; legs black, without metallic 

 tints ; hair of head and thorax dull white, with no dark 

 intermixed on thorax above; hair of cheeks black, and a few 

 black hairs on extreme sides of vertex; hair on pleura white, 

 but just under the wings, and posteriorly on sides of meta- 

 thorax, it is black; clypeus normal; antenna? wholly dark, 

 flagellum very long, not at all crenulate or moniliform. 

 Wings hyaline; b. n. meeting t.-m. Hair of legs partly pale 

 and partly dark ; hind femora with scattered black hairs ; 

 hair on inner side of hind basitarsus very dark purplish 

 fuscous. Sixth dorsal segment of abdomen entire, not at all 

 produced ; seventh bidentate, with a brush of black hair 

 beneath each toolh ; first ventral not eniarginate ; second 



'■ Amnla. a Malavan wnrd for blue. 



