Genus Kw^rtn^ found in 'New Mexico. 81 



to be subcancellate, with a short raised rim behind, but not at 

 sides. Pubescence of thorax quite orange-red, rather short 

 but dense on sides of mesothorax, hind border of scutellum, 

 postscutellum, pleura, and sides of metathorax. Tegulse 

 shining reddish fulvous. Wings yellowish smoky, with a 

 subviolaceous lustre, external margin broadly darker; ner- 

 vures dark brown, costal nervure black, stigma small and 

 narrow, ferruginous ; third submarginal cell not narrowing 

 half to marginal. Abdomen moderately shining, strongly 

 and closely punctured, basal third of first segment smooth 

 and practically impunctate. Pubescence foxy red, very short, 

 forming bands on the hind margins of the segments, that on 

 the first thin, the others dense and conspicuous. Colour of 

 abdomen dark ferruginous, with an almost purplish tint ; first 

 segment black except its hind margin, third to fifth segments 

 suffused with black, sixth dark brownish. Venter dark 

 reddish, the last three segments becoming blackisli. 



Hah. Santa Fe, N. M., by the Denver and Rio Grande 

 depot ; two inside closed flowers of Argenione platyceras^ on 

 a dull afternoon, Aug. 3, 1895 [Ckll 4150, 4151). 



ii. Clypeus not dark, at least in the c^* • 

 t Dorsum of thorax honey-yellow. 

 Andrena mellea, Cresson. 

 Andrena mellea, Cresson, Trans. Am. Ent. Soc. 1868, p. 384, $ . 



tt Thorax entirely black. 



(a) Pubescence of pleura, face, and cheeks fulvous ; second segment 

 of abdomen without a black band. 



Andrena prunorum, Ckll., sp. n. 



(^. Length about 12 millim. Head and thorax black, 

 clypeus yellow, abdomen ferruginous and black, legs ferru- 

 ginous, blackish at base, wings clouded at apex. Head 

 broader than long, subtriangular or broadly subcordiform, 

 whereas in Jessicce it is more quadrate ; fulvous pubescence 

 quite dense all over face, cheeks, &c., only lacking on vertex, 

 which is closely punctured. Clypeus large, closely but 

 rather feebly punctured, light yellow, with two black dots. 

 Basal process of labrum pitch-black, shining, emarginate, 

 while in Jessicce it is truncate, a little depressed medially, 

 hardly emarginate. Mandibles wholly black. Antennse 

 black, with the scape, funicle, first joint of flagellum, and 

 base of second joint more or less strongly ferruginous. 



Ann. d) Mag, N. Hist. Ser. 6. Vol. xviii. 6 



