Bees from New i\fexico. 19 



tint of the abilominal banfU and dark shading of the win^s, 

 exactly like Af. pugnata^ but differing a3 follows : — Cheeks 

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

 vertex with the j)unctures large and well-separated, the space 

 between them shining, though microscopically tessoUate ; 

 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 thian in pujuahi^ 

 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 ])alpus is conspicuously longer than 

 the first. The abdominal bands are very distinct. 



Huh. Las Vegas, /Vug. 1 [Porter cO Ckll.) ; Fillmore Canon, 

 Organ Alts., about 5700 feet, Sept. 1 (6^ //. T. Toionsend). 



Megachile brevis. Say, 1837. 



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

 tO CklL). 



This agrees with ^f. 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 mitriforra, mandibles 

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



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

 Bridwell). 



Andrena sapellonisy sp. n. 



? . — Length 9^-11 millim. ; ,$ about 8 millim. 

 With a wholly dark face arid very long antennie, the 

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

 Amer. Ent. Soc. xviii. p. 50, this runs to .1. snlicis, but it is 

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

 by having the basal process of labruin 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 segjnents are white instead of fulvous. The 

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

 tate lidge, 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* 



