On Bees from New Medico. 7 



Parana formation is truly of late Tertiary age, and may 

 probably be correlated with tlie Pliocene of the nortlii-rn 

 lu-misphcre. 



KXl'l.AXATKiN OK IM>ATK I. 



Tt'etli of l^lasinobmuch fislies from tlw ramna foriuatiuii, I'ruviiicti 

 of Kiitrerios, Ar^:entiiie Republic. 



Fujs. 1, \ n. (hluiitiupis elei/ans, Af;. ; outer and latural aspect?. 



Fty. '2. Ditto; inner lace. 



Fiyn. 3, 'ia. I>itto ; inner and lateral aspects. 



Fi(j8. 4, o. Ditto ; inner face. 



Figs. 6, 6 a. O.ri/r/iinti liastalis, .Vj,'. ; outer and lateral aspects. 



FitjK. 7, 8. Ditto; outer face. 



Fly. y. CHrcliaroilon nic(/<ilo//on, Ag. ; outer face, two tliirds iial. size. 



Fiys. 10, 10(1. (iaii'ocerdo mJitncus, X\:;. ; outer and inner faces. 



Flya. II, II rt. Ileniipristis serra, \^^.\ outer and inner faces. 



The original specimens are in tlie National Museunj, IJuenos Aires, and 

 all the figures except no. '.) are of tlie natural size. 



II. — The Sew Mexico Bees of the Genus Megacliile (lad a 

 new Andrena. By T. D. A. Cockerell, Professor of 

 Entomology, New Mexico Agricultural College. 



Me(jachile Wooloni, Ckll., 1898. 



The type was a male. I have before me two females from 

 the Kio Kuidoso, about 6900 feet, at flowers of Verbascum 

 thapsus, July 23 (C. JI. T. Townsend). They differ at once 

 Irom the female of M. calogaster by having little or no black 

 hair on the vertex and mesothorax ; one has the orange 

 scopa as in calogaskr^ but the other has the seo[)a orange 

 in the middle and black at the sides, thus approaching 

 M. vielunophcea. 



This belongs to the subgenus Mejachile s. 6ti\, as restricted 

 by Friese. 



Megachile sapellonisj sp. n. 



?. — Length 17-22 millim., the shorter examples having 

 the abdominal segments retracted. 



Black, with rather thin pubescence, white on sides of 

 face, checks, pleura, nietathorax, femora, siiles of first seg- 

 ment of abdomen, and hind margins of second and following 

 segments, more or less interrupted in the middle, at least ou 



