Bees from New }iexico. 141 



bicoloured, as in prosopidis. The secoaJ and third segiucnU 

 of the abdomen are punctured alike. 



Hah. Santa Fe, N. M., July 10, three at flowers of Cactus 

 radiosus, var. neomexi'canus (Eng.), in Mr. Beyle's garden; 

 they burrowed deeply down among the anthers. OiiQ at 

 Colorado Springs, Colorado, middle of July. 



This species does not appreciably differ from //. prosopidis, 

 at least in the female, except in the characters given above; 

 yet I believe it is certainly a different species. I have a 

 series of each, and the ditferences are c instant ; the bees also 

 occur on different kinds of flowers in different life-zones. 



Ileriades meliloti, sp. n. 



cJ . Length about 6h millim. 



Stoutly built ; head large, seen from in front almost exactly 

 circular; eyes bicoloured green and black, face overcd with 

 white hairs; vertex with very sparse silvery hairs, shining, 

 strongly but only moderately densely punctured; antetmae 

 not very long, flagellum only very feebly brown ; mandibles 

 deeply bifid at ends, the two teeth sharp, no indication of a 

 tiiird ; thorax not densely but quite copiously white-hairy ; 

 mesothorax with strong quite close punctures, similar punc- 

 tures on scutellum not so close ; tegulaj shining piceous ; 

 nervures and stigma black ; wings hyaline ; base of meta- 

 thorax smooth and shining ; small joints of tarsi rufescent ; 

 abdomen with strong and tolerably close jnmctures, similar on 

 the second and third segments ; the narrow white hair-bands 

 very distinct ; apex with four equidistant teeth, of which the 

 two middle are the larger, but are not broadened. Venter 

 with two white hair-bands ; subbasal projection not very large, 

 hairy. 



JJab. Four in the Mesilla Valley, N. M., near Las Cruces. 

 One was on Melihtus indica, on the College Farm, early in 

 May; two were on the College campus, Sept. 10, at the same 

 spot as a lot of Plenoculus Cockerellii, Fox *. 



M. meliloti differs from the male of H. jjrosopidis at once 

 in its considerably larger size, the much larger head, and 

 relatively shorter antenna). It is a somewhat larger insect 

 than even the female of cactorum, so it is not likely to be its 

 male, especially since it was found in a quite different locality. 



The male of H. osmoi'des, Cresson, which I took at Colorado 



* The P. CockercUii were flying rapidly over the sand only a few 

 inches above the surface and burrowing in it. I saw two making a great 

 fuss, and found they were struggling for the possession of a small cater- 

 pillar. 



