THE CANADIAN ENTOMOLOGIST. 311 



shining, with a very conspicuous median pit. The third antennal joint is 

 longer than in novo/nexicana, the marginal cell is longer and more pointed 

 apically, and the outer t. c. is not angulate about the middle. The abdo- 

 men is broader and more globose than in ?ieomexicana, and is dark green. 

 The mesothorax is olive green. The bright red thoracic hair and green 

 mesoihorax will separate this from Cresson's 0. longula and juxta ; 

 O. longula has the same kind of metathorax, however. The clypeus is 

 black, produced and broadly truncate ; the apical tooth of mandibles is 

 very long and sharp, the mandibles are tridentate. O. florissanticola 

 Ckll. is also related ; it has the area of metathorax shining, but without a 

 W(.ll-defined pit; the abdomen is very blue. 



The maxillary blade in O. pertnorata is conspicuously obliquely 

 striate and speckled with black, and the tongue is shorter than in O.novo- 

 mexicana. In 0. florissanticola the maxillary blade is dark. 



Hab. — Steamboat Springs, Colorado (type locality), May 27, at flow- 

 ers of Physaria acuti/olia^ydh. ( Cockerell) ; Johnson Park, New Mexico, 

 July 4, at flowers of loco weed (Anna Gohrman). I am much indebted 

 to Mr. S. A. Rohwer for notes on my type of O. novo/nexicana, which is in 

 the National Museum. 



Osmia fulgida Cress. — One female. 



Ostnia globosi/ormis, n. sp. — One male. Length aSout 7^' mm., 

 entirely black, except that the hind margins of the abdominal segments 

 are very narrowly rufescent ; similar to O. globosa (cf Psyche, 1907, 

 p. 16), but the pubescence entirely white, not in the least ochreous, 

 except on inner side of tarsi, where it is light yellowish, and the hind 

 basitarsus with a tooth a little beyond the middle; antennae, long, entirely 

 black, third joint a trifle shorter than fourth ; eyes black, cheeks broad, 

 mesothorax densely punctured, only in the middle of the disc a little more 

 sparsely; tegulae fuscopiceous ; wings stained vvilh reddish; b. n. just 

 falling short oft. m.; first r. n. at end more distant frum base of second 

 s. m. than second from apex ; sixth dorsal abdominal segment faintly 

 cmarginate ; seventh bidentate, the teeth very obtuse ; second ventral 

 emarginate. This can hardly be the male of O. abjecta, on account of 

 the dull, closely-punctured mesothorax, the entirely dull granular area of 

 metathorax, etc. 



Osmia nigrifrons Cress. — One female. This is identical with the 

 ^' nigri/i'ons var." of the Boulder County table. It m?ty prove to be 

 a distinct species when the male is known. 



