Bees from New Mexico. 137 



Very little cLvclopeil, (ir.st recurrent nervurc joining secon I 

 submarginal cell cat a distance from the origin of the first 

 transverso-ciibital iiervure greater than half the length of 

 the latter. Abdoinen suboval, without a subbasal ventral 

 projection ; a])ex with four a]iproxiniatcly equidistant teeth, 

 the median ones not broadened. 



? . Similar to the male, with a white ventral scopa. Ven- 

 tral base of abdomen with a short tooth-like projection. 

 Antennaj shorter. 



Ilah. Las Cruces, N. M., on Dif/elovia Wrightii, Sept. 23, 

 a male. Also a male^ June 16, on Aster spinas us (Ckll. 3036). 

 A female was taken as early as April 27 on the occasion of a 

 meeting of the Agricultural College Field Club. 



This species belongs to an entirely diiferent group from 

 aster is &c. 



B. Lerjs entire]]/ hlaclc. 

 a. Fh'st recurrent nervure uniting with first transverso -cubital. 



Heriades crucifera, sp. n. 



cJ . Length about or slightly over 6 millim. 

 In appearance, structure and punctuation, &c. this is like 

 the male of cari7iata, but it differs as follows : — 



crucifera S • carinuta S • 



First recurrent nervure uniting First recurrent nervure not so 



with the first transverso-cubital. uniting. 



First ventral segment of abdo- First ventral segment of abdo- 

 men shovel-shaped, viewed late- men produced into a large blunt 

 rally not unlike the head of the tooth, erect and a little excavated 

 snake Heterodon nasicus upside posteriori}-. 

 down. 



Face a little narrower ; clypeus Face a little broader : clypeus 



only fringed with white hair. covered vdth white hair. 



Uab. Santa Fe, N. M., July 18 (Ckll. 1546). 



6. First recurrent nervure reaching second submarginal cell at a point 

 distant from the origin of the fu-st transverso-cubital less than half 

 the length of the latter. Thorax usually very coarsely sculptured. 

 Stigma distinct. Wings smoky at apex. 



Heriades carinata^ Cresson, 1864. 



I have an Illinois specimen from Mr. Robertson^ and it 

 agrees with the insect as found in New Mexico. Females 

 are before me from the following places: — (1) Santa F^, 

 N. M., Aug. 2 and 3, at flowers of Grindelia sqaarrosaj three; 



