56 HENRY SKINNER, EDITOR. 



impuuctatebelt. Front dull, indistinctly granularly striate. Vertex opaque. Third 

 joint of antennae longer than the fourth and fifth united. Dorsulum sculptured 

 much like the vertex, a shining median line extending back to the middle, a short 

 longitudinal shining line in the middle of each 'side. Scutellum more shining, 

 longitudinally impressed medially. Metathorax uniformly dull, finely granular. 

 The enclosed space faintly outlined. Wings yellowish, nervures and stigma dark 

 brown, first recurrent nervure received by the second submarginal cell a little 

 beyond the middle. Abdomen shining, finely, indistinctly sculptured. Pygidial 

 area broad. Dorsal segments excepting first, with a sparse interrupted fringe of 

 white hairs Anal fimbria brownish. Head and thorax with fine white hair, 

 except dorsally, frontal fovese brownish sericeous. Tibiae and tarsi with brownish 

 hairs. 



Type.— Coll. Acad. Nat. Sciences, Phila. Type locality, Beulah, 

 N. M., August 18 (W. P. Cockerell). 



Two 9 9 , comes nearest to Andrena birtwelli Ckll. 



Andrena delta n. sp. Head and thorax dull granular, mandibles broad, 

 process of labrum indistinct, emarginate. 



9 Length 9 mm. — Front striate shining, clypeus duller, with separated punc- 

 tures, the punctuation interrupted longitudinally in the middle. Occiput and 

 cheeks finely roughened. The third joint of the antennae fully as long as the 

 fourth and fifth joints together. Hairs of the Head long and white, faintly yel- 

 lowish around the mouth, the frontal fovese deep brown, sericeous. Dorsulum 

 dull, sculptured much like vertex, a longitudinal impressed line extending to 

 the middle, a poorly defined short longitudinal shining line in middle of each 

 side. Enclosure of metathorax noticeable by its being slightly depressed, and 

 by the somewhat coarser sculpture of the integument behind it. Hairs of the 

 thorax white, as plentiful as those on head, dorsally almost bare. Wings yel- 

 lowish, the first recurrent nervure received by the second submarginal cell, one- 

 third its length on the cubitus from the second transverse cubitus. Pubescence 

 of tibiae and tarsi brownish. Abdomen globose, shining, almost bare, the base of 

 the segments faintly roughened. Anal fimbria brownish. 



Type.— Coll. Acad. Nat. Sciences, Phila. Type locality. West 

 of Beulah, N. M. One 9 , August 23 (W. P. Cockerell). 



HalicQus aquiliC Ckll. 



One 9 , fourteen % % . One 9 near Beulah (W. P. and T. I ). A. 

 Cockerell ). One 9 , July 26, head of Dailey Canon, July 26 (T. D. 

 A. Cockerell). Two 9 9 , on flowers of Roripa nasturtium, June 

 29, 1902 (Viereck). 



Halicl iin ruidoseiisis Ckll. 



Seven 9 9 , three $ $ . Three 9 9 , July 28, August 17-25 (T. 

 D. A. and W. P. Cockerell). Three 9 9, July 16, one 9, July 

 24, on flowers of Heracleum lanatum, one 9 , August 25, 1899 (\Y. 

 P. Cockerell). One 9 , Dailey Canon, August 10 (T. D. A. and \V. 



