180 THE CANADIAN ENTOJVIOLOGIST. 



Habitat. — Albuquerque, N. M.; two, on June 30th, 1895, between 

 the town and the University [Ckll., 3254, 3256. J. 



ii. Tarsi rufous in the 9 ; yellowish white in the (^ . 



Andrena heteromorpha, n. sp. — .J. Length about 8 mm.; similar in 

 build and general appearance to A. trifoliata, but rather more slender. 

 Black, no more pubescent than a Frosapis, face-mark and tubercles pale 

 primrose yellow. Head a little broader than long; eyes black; supra- 

 clypeal mark very narrow, as in the other species of the group, forming the 

 base of the clyi:)eal mark, which is trilobed below, much rounder in 

 general outline than that of trifoliata, decidedly longer in proportion to 

 its breadth than in that or viaurula. Mandibles simple, rufous, with the 

 tips blackish and the bases becoming yellow. Face and front shining, 

 strongly but irregularly punctured, vertex strongly and closely punctured. 

 Antenna? black, the tlagellum from the 4th joint becoming rufous beneath. 

 Tubercles pale yellow with a black spot near the hind margin. Meso- 

 thorax shiny, closely punctured, parapsidal grooves distinct. Scutellum 

 closely punctured. Postscutellum and metathorax coarsely granular, 

 base of metathorax with small, ill-defined longitudinal wrinkles. Tegul?e 

 testaceous, with a triangular pale yellow spot ; wings smoky hyaline, 

 nervures and stigma dark brown, the former ferruginous at base of wing. 

 First recurrent nervure entering second submarginal cell at the end of its 

 second third. Legs black, first four knees yellow, hind knees ferruginous; 

 tarsi ferruginous, first joint of middle tarsi quite broad. Abdomen 

 strongly and closely punctured, without distinct hair-bands or spots, but 

 the last two segments pruinose with white pubescence. Anal fimbria pale 

 ochreous. 



$ . Smaller and more slender, the abdomen subcylindrical. Face 

 wholly pale primrose yellow below level of antennae, the upper margin of 

 the yellow straight, only notched on each side of the dog-ear marks, 

 and produced narrowly a short distance along the orbits. Basal portion 

 of mandibles externally all pale yellow. Antennae entirely dark, not at 

 all rufescent. Second submarginal cell very narrow. Anterior tibiae pale 

 yellow in front ; all the tarsi cream colour, except the darkened terminal 

 joint. Abdomen with the last four segments primrose. Punctures of 

 basal segment not so close. 



Habitat — Las Cruces, N. M.; close to the Agricultural College, on 

 Verhesina eiicelioiJcs ; Sept. 12th, 1S95 [Ckll., 5056,9 ; 5058, ^ .\ 



