Art. III.] 
Cockerell, New Mexico Bees. 
47 
May, Miss Agnes Williams ; Mesilla, April 27, at flow- 
ers of Rosa hlanda in cultivation, C. M. Barber.) 
. . . . olensus, Ckll., n. sp. 
Cheeks not tubereulate, .... 12 
12. Thorax blue ; stigma pale yellowish, . . 13 
Thorax green, ..... 14 
13. Mesothorax with very large and strong punctures. (Santa 
Fe.) . . . . . seniicaruleus, Ckll, 
Thorax small, mesothorax shiny, hardly punctured. (Me- 
silla Valley.) .... semibrunneus^ Ckll, 
14. Abdomen green like the head and thorax. (Mesilla Valley.) 
. . . . pruinosusy Rob. 
Abdomen apricot color, often dark at the apex. This spe- 
cies, common in the Mesilla Valley, has formerly been 
recorded as H. stultus, but it differs from that, and re- 
sembles H. nymphalis^ in having the mesothorax 
strongly and rather closely punctured* It differs from 
nymphalis in the bluer green of the head and thorax, 
but seems to be only a geographical race of that insect. 
nymphalis^ Smith, race mesillensis ^ Ckll., n. race. 
Abdomen black or piceous, . ... 15 
15. Stigma pale honey-color ; metathorax dark blue ; abdo- 
men hoary. (Santa Fe.) . . perdippcilis^ Ckll. 
Stigma dark or light brown, when light a dilute sepia 
tint, . . . . . . 16 
16. Tegulse very dark; clypeus coppery or brassy, contrasting 
with the face. (Ruidoso Creek, Santa Fe, Mesilla 
Valley.) .... ruidosensis, Ckll. 
Tegulge reddish-testaceous ; face narrower. (Mesilla 
Valley.) .... ashmeadii^ Rob. 
A^ote . — Several other green species of Halictus have been collected, but not 
yet sufficiently studied. 
Hemihalictus. 
8 mm. long, black. (Lone mtn., at flowers of Pyrrhopappus early in 
the morning.) ..... lustrans^ Ckll. 
Augochlora. 
Entirely bluish-green, very brilliant ; fourth ventral segment of male 
abdomen not emarginate. (Mesilla Valley, Organ Mts.) neglectula^ Ckll. 
Agapostemon. 
Females, 
Abdomen honey-color, .... 
Abdomen green, like the head and thorax, 
I. Mesothorax with punctures of two sizes, 
Mesothorax roughened. 
melliventriSf Cresson. 
I 
texanus, Cresson. 
. radiatus, Say. 
