]Geiius Andrena found in New Mexico. 79 



segments with a small black spot laterally near base ; first 

 segment with sparse long hairs at sides, bare towards centre, 

 without apical hairy band ; hairy bands, interrupted on 

 segments 3 and 4, on second reduced to a patch on each side ; 

 apical segments clothed sparsely. Length about 7 millim." 

 [Jessie E. Casad.) 



? . Length 9 millim. Head and thorax black, abdomen 

 entirely bright rufous, except the mostly black pygidium ; a 

 black patch on each side of first segment at base and a small 

 black spot on each side of second segment. Legs black, the 

 hind tibise and tarsi light rufous. Clypeus with large close 

 punctures, no median impunctate line. Mandibles scimitar- 

 shaped. Antennse wholly black. Mesothorax microscopi- 

 cally reticulate, with excessively large punctures, becoming 

 sparse in middle. Hind portion of mesothorax and scutellam 

 shining, the latter with large punctures. Enclosure of raeta- 

 thorax longitudinally plicate, bounded behind by a salient 

 rim. Abdomen with small sparse punctures. Anal fimbria 

 fulvous. 



(^ . Like the female, but the antennae longer, the pubes- 

 cence on clypeus paler and denser, the first segment of the 

 abdomen black except its hind margin broadly, and the hind 

 tibige black. 



Hah. Common about Las Cruces, N. M. Taken on 

 Sisymhrium (10 males, one female) and on flowers of plum 

 (3 males, two females) on the College Farm, April 9 and 12, 

 1895. One female on Saltx, May 3. 



This pretty species has the coloration of a Sphecodes ; it 

 could be confounded only with A. Marice^ Rob., and A. Ferezi^ 

 ^oh.j = erythr eg astr a, Ashni., from both of which it is quite 

 distinct by the coloration of the male &c. 



A somewhat similar European species is A. genevensiSj 

 Schmied., but that has the end of the abdomen dark. 



/3. Wings strongly clouded apically. 



i. Clypeus dark. 



t First segment of abdomen very feebly and sparsely punctured. 



Andrena Jessicce, Ckll., sp. n, 



cJ . Length about 10 millim. Head and thorax black j 

 abdomen rufous, with black markings, pubescence fulvous. 

 Head slightly wider than thorax, face broad^ orbits parallel ; 

 pubescence tolerably dense, concealing the surface, except on 

 vertex; antennae black, the flagellum only tinged very dark 

 brown on one side ; mandibles black ; clypeus strongly and 



