b THE ENTOMOLOGIST. 



with very sparse punctures on a shining ground (closer at sides of 

 second) ; third and fourth with closer, hut by no means dense, punc- 

 tures. The eyes are narrower than in S. veganus. 



Hah. Pecos, New Mexico, June 25th, 1903 (IF. P. Cockerell). 

 The altitude of Pecos is about 6700 ft. 



CoUetes gilensis, Ckll. 

 Pecos, Aug. 7th, a female at flowers of Melilotus alba {W. P. 

 Cockerell). In Europe the same plant is visited by CoUetes 

 fodiens, as is recorded by Loew. 



Halictus ruidosensis, Ckll. 

 Pecos ; two females at flowers of Castilleia Integra, June 26th 

 (M. Grahham). The usual visitor of this plant is H. ovaliceps. 



Halictus clematisellus, Ckll. 

 Pecos ; both sexes common on Petalostemon oligophyllus, Aug. 

 12th (IF. P. Cockerell). Previously taken only on Clematis. 



Andrena mellea, Cresson. 

 Pecos, rather common ; taken in June at flowers of Fallugia 

 acuminata {Fallugia parado.va var. acuminata, Wooton, Bull. 

 Torrey Bot. Club, 1898, p. 306). At Glorieta (Sta. Fe County) 

 a female was taken in a flower of Argemone intermedia, August 

 23rd. 



Andrena prunorum, Ckll. 



Pecos ; at flowers of Fallugia, June 24th (IF. P. Cockerell). 



Perdita affinis, Cresson. 



Pecos ; both sexes at flowers of Grindelia inornata, Aug. 24th 

 (IF. P. Cockerell). At Glorieta my wife took it on Chrysopsis 

 villosa. 



Perdita stottleri, Ckll. 



(? . About 5 mm. long ; similar to P. townsendi, but smaller, with 

 the fifth black band on abdomen wanting, or represented by a mere 

 shaded line. 



The species was described from a single female taken on 

 Bigelovia. It proves to be really a species of Gutierrezia sarothrce, 

 which it visits in great numbers at Pecos, New Mexico, during 

 the last half of August. Its rediscovery is due to my wife. 



Perdita chrysophila, Ckll. 

 A male was taken at Pecos, New Mexico, at flowers of Picra- 

 deniaflorihimda, Aug. 21st, 1903 (IF. P. Cockerell). It is a little 

 smaller than the only specimen previously known, and the 

 metallic tints of the head and thorax are dark blue, not at all 

 green. 



