33 2 ENTOMOLOGICAL NEWS. [Dec., '03 



Osmia cerasi, Ckll. 



Two females, not hitherto recorded, are from L,asCruces, N. 

 M., April 10 (C. H. T. Toicnscnd) and Santa Fe, N. M. (J/iss 

 Myrtle Boyle). The latter locality, being in the Transition 

 zone, is rather surprising. 



Osmia novomexicana, n. sp. 



9. Length, 14 millim.; similar to O. grandior Ckll., but differing as 

 follows ; hair between antenna; very pale yellowish ; head larger, the face 

 being broader, facial quadrangle conspicuously broader than long ; hair 

 on thoracic dorsum brighter, that on scutellum a very lively ferruginous ; 

 hair on middle of first two abdominal segments all white, the first seg- 

 ment has a little, and the second much black hair at the sides ; upper 

 surface of abdomen brilliant prussian blue, only the basal parts of the 

 segments, over which the other segments slide, being black. In my 

 original description of grandior I say the clypeus is ordinary. This is 

 not quite true ; in grandior and novomexicana the anterior margin of the 

 clypeus is produced, though the sides slope away gradually from the 

 broadly truncate front edge. These bees belong to the group which 

 Robertson has named Centrosmia; but the characters he indicates, based 

 on O. bitcephala do not hold good for all the allied forms. The malar 

 space in O. grandior is practically obsolete, while in O. novomexicana 

 it is distinctly present, but excessively narrow. In O. grandior the basal 

 nervure falls a trifle short of the transverse- medial ; in O. novomexicana 

 they exactly meet. The head of O. novomexicana is hardly as big as 

 the thorax ; the clypeus is dull, with very dense, minute punctures ; the 

 apical tooth of the mandibles is considerably longer than the middle one ; 

 hair of pleura, cheeks and clypeus, and ventral scopa all black ; legs 

 black, without any metallic tinge. 



Hab. Arroyo Pecos, Las Vegas, New Mexico, June 7. 

 ( Wilmattc P. Cockerel!. ) 



Osmia (Gnathosmiai mandibularis Cress. 



Two females at Rociada, New Mexico, at flowers of Cardans, 

 August 10 and n (T. D. A, and Jl r . P. Cockerel/). This 

 beautiful and interesting species must fall in Robertson's group 

 Gnathosmia, although the clypeus has no distinct keel. The 

 species is new to New Mexico. 



Osmia chlorops Ckll. and Titus, tf. 



This belongs to Robertson's group Monilosmia, and is closrlv 

 related to O, canadensis. 



