b THE ENTOMOLOGIST. 



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

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

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



Hah. Pecos, New Mexico, June 25th, 1903 {W. P. Cockerell). 

 The altitude of Pecos is about 6700 ft. 



Colletes gilensis, Ckll. 

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

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

 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 oligopJiyllus, Aug. 

 12th {W. P. Cockerell). Previously taken only on Clematis. 



Andrena mellea, Cresson. 

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

 acuminata [Fallugia paradoxa 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 (W. P. Cockerell). 



Perdita afinis, Cresson. 



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

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

 villosa. 



Perdita stottleri, Ckll. 



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

 the fifth black baud 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 sarothra, 

 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- 

 deniaflorihunda, Aug. 21st, 1903 (W. 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. 



