Bees from New Mexico. 127 



the Ijluisli lustre on the abdomen, in the shorter nietatlioraeic 

 enclosure, &c. //. seinicwrulens, however, has the first two 

 abdoniiiuil sej^ments nearly as in anomalus, not as in 

 perdijficilis. 



Halictns armatlccps, Cresson. 



Las Vegas, June 17, at flowers of Convolvulus arvensis, ? 

 {Ckll.) ; July 29, at flowers of Verbesina encelioides, ? {Ckll.); 

 Beulah, May 30, at flowers of SallVy $ [IV. Porter). This 

 is the insect heretofore reported from New Mexico as 

 //. Ih/atua, l)ut Mr. Ashmead believes it is not the true liyaivs 

 of Say, and I must agree with him, after comjjarin^ Say's 

 description. 



Hal ictus tardus, Cresson. 

 Beulah, ^[ay 30, at flowers of Salix, ? (/('. Porter). 



Halictus coriuceus, Smith. 

 Beulah, May 30, at flowers of Salix, ? [W. Porter). 



Halictus Lerouxii, Lep. 



Las Vegas Hot Springs, at flowers of Salix, ? [IF. Porter)- 

 New to New Mexico. 



Halictus mesillensis (Ckll.), var. a. 



? . Head and thorax olive-green. Las Vegas, Aug. 5, at 

 flowers of Aplopappus spinuhsus, ? {Ckll.). This difl'ers 

 from H. nymphalis (received from Mr. Robertson) by the 

 distinctly punctured first abdominal segment, the rather 

 smaller size, and the darker, less brightly coloured tcgulse. 



The original inesilleiisis, described as a variety of nymphalis, 

 has also the punctured first abdominal segment. 



Halictus priiinosus, Rob. 



Las Vegas, July 5, at flowers of Verhtsina encelioides, $ 



[S. L. Mize) ; Julv 11, at flowers of Cleome serrulata, ? 

 [ckll.) • July 31, at flowers of Griiulelia, 2 {Ckll.). 



Halictus ruidosensis, Ckll. 



Beulah, July 2G, five females {IV. Porter). 



Halictus sisymbrii, Ckll. 



Las Vegas, June 17, at flowers of Convolvulus arvensis, $ 

 {Ckll.) ; July 31, at flowci-s of Cleome seirulata, $ [I'kll.) ; 

 July 2, at flowers of Sidalcea neomexicana, ? {M. Holzman). 



