256 Mr. T. D. A. Cockerell — Descriptions and 



intended to facilitate the identification of specimens, not 

 merely to support an author's conception of species. 



Were it not that I do not wish to lengthen this review with 

 matters of nomenclature, I would have some complaints to 

 make about the use of the nomen nudum of L. boettgeri to> 



End of snout of L. snrdoa (A) and L. fiorvathi (B), 

 r, rostral ; fn, frontonasal. 



replace my properly described and figured L. chlorogister, and 

 about the incorrect manner in which some of my previous 

 contributions have been referred to in the synonymy preceding 

 the descriptions of the species and varieties. But I will 

 reserve these points for a more detailed publication on these 

 lizards, on which I am now engaged. 



XX XY. — Descriptions and Records of Bees. — XX VI. 

 By T. D. A. Cockerell, University of Colorado. 



Melissodes atrifera r sp. rr. 



<J . — Length about 12^ mm.; antennas about 10. 



Black, the clypeus and labrum with Ugument wholly blacky 

 mandibles with no yellow spot j flagellum clear ferruginous 

 beneath ; third antennal joint about twice as long as second ; 

 pubescence pale ochreous, nearly white on face and lower 

 part of cheeks, black on posterior half of mesothorax and 

 scutellum except margin ; hair on inner side of middle and 

 hind basitarsi orange; tegulas dark reddish, with black hair. 

 Wings dusky, stigma atid nervures fusco-ferruginous. Meso- 

 thorax shining, strongly punctured; hind margins of second 

 and following abdominal segments broadly whitish hyaline, 

 of first narrowly so ; upper surface of abdomen with much 

 coarse, suberect, dark fuscous hair, but with also imperfect 



