new and little-known Hymenoptera. 449 



bounded by a raised line, strongly roughened, only feebly 

 plicate at extreme base. Tegulse piceous, minutely tessellate, 

 with sparse feeble punctures. Wings dusky hyaline, nervures 

 and stigma dark brown; stigma small; submarginal cells 

 large, hut the first remarkably shorty not longer than the third 

 on the cubital nervure ; second little shorter than the first on 

 the cubital nervure^ receiving the first recurrent nervure 

 slightly beyond its middle ; third narrowed less than one 

 half to marginal. Legs black, with pale pubescence, that on 

 inner side of first tarsal joints becoming orange. Abdomen 

 minutely tessellate^ with only a few minute scattered punctures \ 

 hind margins of segments 2 to 4 and extreme lateral margins 

 of 1 with white hair^ forming narrow bands ; apex with soot- 

 coloured hair. 



S . — Length about 12 millim. ; similar to the female, with 

 the usual sexual differences. Clypeus primrose-yellow, with 

 two black spots. 



Hah. Ruidoso region, New Mexico. Ruidoso, below Big 

 Eock crossing, about 6600 feet, Aug. 1, 1898, on flowers of 

 Heliopsis scabra (C. H. T. Townsend) ; South Fork of Eagle 

 Creek, about 8300 feet, Aug. 19, on flowers of Sicyos parvi- 

 fiortis, 1 ? {Townsend) ; South Fork of Eagle Creek, about 

 8100 feet, Aug. 13, on flowers of Rudbeckia laciniata, 3 ? , 

 1 (^ {Townsend) ; Forks of Ruidoso Creek, July 30, 1898 

 (C. M. Barber). 



Easily known by the venation and the colour of the pubes- 

 cence. Nearest, perhaps, to A. helianthi, Rob., which has 

 the small stigma and the same general build and sculpture. 

 On the same day and at the same locality as A. Barberi 

 IVJr. Barber took the second known specimen oi A. apacheorum^ 

 Ckll. 



Andrena argemonis, Ckll. 



$ . — Resembles the male ; basal joints of tarsi broader, 

 first four tibiae black instead of ferruginous ; antennoe a trifle 

 shorter ; tegulae larger, base of metathorax smoother ; apex 

 of abdomen with very brilliant orange-rufous hair. 



Hah. Ruidoso, New Mexico, about 6500 feet, July 25, 

 1898, on flowers of Erysimum asperum ; side caiion north of 

 Ruidoso, about 6800 feet, July 22, on flowers of Verhascum 

 thapsus. Collected by Prof. C. H. T. Townsend. 



This female differs hardly at all from the description of 

 A.fastuosa, Sm., from Orizaba; but without seeing Smith's 

 types or specimens from the same region it is impossible to 

 say whether the species are identical. 



