Genus Andrena. found in New Mexico. 85 



ceons on vertex, hind part of mesothorax, scutellum, and 

 postscutellum, and on anterior and middle tibise and all the 

 tarsi. Apex of hind femora with a conspicuous tuft of 

 reddish-fulvous pubescence. Anal fimbria orange fulvous, 

 very conspicuous. Head broader than long, vertex depressed; 

 cljpeus wholly black, shining, with large, not particularly 

 close punctures, medially impunctate. Antennaj wholly 

 black, first joint of flagellum longer than the two following 

 joints together. Sides of face with broad white bands of 

 appressed pubescence, partly hidden by the erect hairs imme- 

 diately mesad of them. Vertex sparsely punctured. Basal 

 process of labrum rounded, not emarginate. Lower corners 

 of clypeus somewhat produced. Mandibles wholly dark, 

 toothed within. Mesothorax quite closely punctured, scu- 

 tellum not so closely. Enclosure of metathorax wrinkled- 

 subcancellate, not bounded by a distinct rim. Tegulge 

 piceous. Wings strongly yellowish except at lower outer 

 part, which is hyaline ; apex strongly smoky, the dark 

 colour extending a little into the marginal cell. A smoky 

 cloud also in and about second submarginal. Nervures dark 

 brown, stigma ferruginous. Third submarginal narrowed 

 about one half to marginal. Hind wings slightly smoky at 

 apex. Abdomen strongly and closely punctured, segments 2 

 to 4 with conspicuous even bands of white pubescence, that 

 on 2 weak in the middle. 



JIab. Three males and three females, all on flowers of 

 plum. College Farm, MesiUa Valley, N. M., April 10, 1895 

 {Casad), and March 26, 1896 [CklL). 



Near to A. nubecula, Sm., but differs by the colour of the 

 antennai and tegulai. A. rejiexa, Cr., also seems to be 

 allied*. 



* The following species, belonging to this section but at once distin- 

 guished from fracta by the clypeus being yellow in the female (as in 

 Alicice, Rob.), may be expected to occur in New Mexico : — 



Andrena mexicanoruin, Ckll., sp. n. 



$ . Length about 11 millim., fairly stout, black, with a broad band 

 across the f.ice ; tubercles (with a black dot) and spot on tegulse pale 

 primrose-yellow. Pubescence very sparse, greyish, with a very slight 

 ochraceous tinge. Head subquadrate, broader than long; upper half of 

 clvpeus just enclosing the black dots, bulging downwards medially ; a 

 broad supraclypeal area, dog-ear marks, and subquadrate lateral marks 

 pale primrose-yellow, the whole forming a broad band, the upper margin 

 of which is straight. Face very sparsely hairy, even the cheeks with 

 hardly any hairs. Basal process of labrum truncate. Mandibles wholly 

 dark. Anteunje very short, w-liolly dark. Clypeus with very large rather 

 sparse punctures, the upper median portion impunctate. Vertex with 

 large tolerably close punctures. Mesothorax and scutellum smooth and 



