190 Journal New York Entomological Society. tVoi. xxv. 



Halictus (Chloralictus) rhodognathus new species. 



5. Length about 6 mm., anterior wing 4.3 mm. ; rather robust, head broad 

 but ordinary; head and thorax green, the front and face, mesothorax and 

 scutellum olive green ; mandibles bright ferruginous, black at base ; antennae 

 black, flagellum ruf escent beneath toward apex ; front strongly and quite 

 closely punctured, the punctures alike from side to side ; mesothorax moder- 

 ately shining but not polished, with rather close, very distinct punctures all 

 over ; scutellum very finely punctured, the punctures of two sizes ; area of 

 metathorax microscopically reticulate and with wavy ridges, with an obscurely 

 subcancellate effect; tegulae rufotestaceous, impunctate ; wings grayish hyaline, 

 stigma and nervures rather dusky testaceous ; legs black ; hind spur with 

 three long teeth ; abdomen shining black, with a faint brassy luster, the apical 

 half thinly pruinose-pubescent ; punctures excessively fine. 



San Benito, Texas, at flowers of Argemone {W. P. Cocker ell). 

 Resembles H. perpunctatus Ellis, but the wings and abdomen are quite 

 different. 



Halictus (Chloralictus) pruinosiformis Crawford. 



San Benito, many females at flowers of Argemone. One has the 

 front and sides of face deep blue. 



Halictus (Chloralictus) disparilis Cresson. 



Point Isabel, one female at yellow composite. The abdomen is 

 green. 



Halictus (Chloralictus) coactus Cresson. 



San Benito, many females at flowers of Argemone. The tegulse 

 are punctured. 



Halictus capitosus Smith. 



Point Isabel, one female at yellow composite. 



Augochlora aztecula Cockerel!. 



San Benito, many females at Argemone. This was described from 

 Mexico, and is new to the United States. One female was taken at 

 Koeberlinia spinosa. 



Agapostemon texanus Cresson. 



San Benito, one male at Argemone. 

 Nomia nortoni Cresson. 



Point Isabel, one male ki yellow composite. 



