Bees from New Mexico. ; 139 
e. First recurrent nervure reaching second submarginal cell at a point 
distant from the origin of the first transverso-cubital more than half 
the length of the latter. Stigma small or subobsolete. Wings not 
smoky at apex. 
i, Large species, tegulee dark ferruginous. 
Heriades opuntie, sp. n. 
?. Length about 10 millim. 
Black, with white pubescence. Punctuation throughout 
strong, but fine and close, yet not close enough to prevent 
the surface from shining. Pubescence conspicuous only 
round antenne, at sides of face, on cheeks beneath, on and 
above tubercles, on anterior part of mesothorax, along margins 
of pleura, in a line above the wings, continuous along hind 
margin of scutellum, along lateral edges of metathorax, on 
coxe, femora beneath, tibize and tarsi rather thinly in front, 
and in the abdominal scopa and the five white narrow bands 
above. All this is white, but the tarsi on the inner side are 
clothed with orange-rufous hairs. Head very large, sub- 
quadrate, seen from in front as large as the lateral view of 
the thorax, broad behind the eyes, closely punctured on the 
vertex and cheeks, but with larger much sparser punctures 
on the shining clypeus. Antenne short, flagellum faintly 
brownish towards the end. Mandibles very broad, the long 
oblique inner edge ornamented with appressed ferruginous 
hairs, and presenting a tooth about its middle. ‘There is no 
sort of prominence on the outer side. yes bicoloured, black 
in front, sage-green behind. Tegule shining dark ferrugi- 
nous. Wings clear, nervures and stigma black, stigma ex- 
tremely small. The anterior margin of the clypeus is perfectly 
straight, and beneath it are some very bright orange-ferruginous 
hairs. The base of the metathorax is smooth and shining. 
The tibial spurs, which are pale yellowish brown in H.gracilior, 
are so only on the front legs of opuntiw, on the others being 
black. ‘The four anterior tibie in graczlior come to a decided 
point at the end on the outer side at an angle of perhaps 50° ; 
but in opuntie they exhibit at the same place a short but 
slender spine, slightly curved upwards. The hind tibie are 
slightly nodulose on the outer side in gracilior, not so in 
opuntice. , 
Hab. At flowers of Opuntia, Soledad Cafion, N. M., 
May 22 (Ckll.). At one time I took this for H. rotundiceps, 
Cresson; but on comparing it closely with Cresson’s descrip- 
tion, it is evidently distinct. 
