Dees from New Mexico. 19 



tint of the abdominal bands and dark shading of the wings, 

 exactly like M. pugnata, but differing as follows : — Cheeks 

 not toothed ; head not so large behind the eyes ; middle of 

 vertex with the punctures large and well-separated, the space 

 between them shining, though microscopically tessellate ; 

 first joint of flagellum shorter; clypeus ordinary, densely 

 punctured all over, with very large punctures, its anterior 

 margin inconspicuously tridentate and fringed beneath with 

 long orange hairs ; mandibles stout, shorter than in pugnata, 

 4-dentate, the apical tooth long and pointed, the next trun- 

 cate, the next quadrate, broader than long, with its inner 

 corner somewhat produced, the innermost tooth short and 

 pointed ; mesothorax dull and as densely punctured as possible 

 all over ; ventral scopa white, black on last segment. The 

 second joint of the labial palpus is conspicuously longer than 

 the first. The abdominal bands are very distinct. 



Hab. Las Vegas, Aug. 1 (Porter & Ckll.) ; Fillmore Canon, 

 Organ Mts., about 5700 feet, Sept. 1 (G. //. T. Townsend). 



Megachile brevis. Say, 1837. 



Hab. Gallinas River, at La Cueva, Aug. 6, 1 ? (Porter 

 & Ckll.). 



This agrees with M. brevis, received from Mr. Charles 

 Robertson, and is the only genuine brevis in the New Mexico 

 collections. The insect is recognized by its rather small 

 size (11-12 millim.), wholly white ventral scopa, mesothorax 

 dull and densely punctured, abdomen mitriform, mandibles 

 curved at the apex, the two apical teeth close together. 



I have the species also from Baldwin, Kansas, July (J. C. 

 Brio 1 well). 



Andrena sapellonis, sp. n. 



$ . — Length 9^—11 millim. ; $ about 8 millim. 

 With a wholly dark face and very long antennae, the 

 flagellum entirely black. In Robertson's table in Trans. 

 Amer. Ent. Soc. xviii. p. 50, this runs to A. salicis, but it is 

 a little larger, and differs from the description of the female 

 by having the basal process of labrum narrow but quite large, 

 produced, and rounded at the end instead of truncate ; the 

 well-developed hair-bands on the second, third, and fourth 

 abdominal segments are white instead of fulvous. The 

 clypeus, as in salicis, has a well-developed median impunc- 

 tate ridge, and the long rather dense hair of the thoracic 

 dorsum is ochreous, though that of the cheeks and pleura is 

 white. The mesothorax is dull, microscopically tessellate, 



2* 



