Art. III.] 
Cockerell, New Mexico Bees, 
59 
Face-markings pallid. (Albuquerque, Santa Fe, &c., 
abundant at fls. of Cleojne,) . . zebrata, Cress, 9 • 
76. Flead large, quadrate, face very hairy. (Mesilla Valley.) 
. . albovittata var. laticeps,, CklL, $ . 
Head ordinary, face not so hairy, . asieris, CklL, 9? 
77. Abdomen black or dark brown, without pale marks, . 78 
Abdomen not banded, but with yellow marks, which are^ 
small and straight. (Mesilla Valley, at fls. of Gutierr- 
ezia.) ..... tarda, CklL, $ , 
Abdomen distinctly banded, . . . -79 
78. Cheeks armed, head large ; clypeus with a narrow median 
line and broad anterior border yellow. (Mesilla Val- 
ley, at fls. of Solidago.) . . grandiceps, CklL, $ . 
Cheeks unarmed, clypeus all pale except the usual dots. 
(Albuquerque.) 
. . crassiceps, CklL, $ 
Males, 
80 
Females, 
81 
80. Mesothorax granular ; face-markings deep yellow, 
. . . . . sphceralcece, var. 
Mesothorax smooth and shining, . . zebrata. Cress. 
81. Nervures colorless. (At fls. of willow.) . . salicis, CklL 
Nervures dark. (At fls. of mesquite.) . exclamans, CklL 
Subfamily. NOMADINiE. 
Nomada. 
Entirely ferruginous, without light markings. (Mesilla Valley, at fls. of 
plum.) . . , . americana, Kirby, race incerta, Cress. 
Ferruginous, with cream-colored markings ; sides of face cream-color, 
but clypeus ferruginous. (Mesilla Valley, at fls. of Gutierrezia.) 
gutter rezia, CklL 
Head and thorax black, with yellow markings ; abdomen banded ; legs 
ferruginous. (Mesilla Valley, Santa Fe.) . . modesta, Cress. 
Flead and thorax black, abdomen black and rufous . . .1 
I. Clypeus reddish; basal part of first abdominal segment 
black; legs rufous. (Mesilla Valley, July.) . pennigera, CklL 
Clypeus black ; first abdominal segment entirely red ; legs 
black. (Mesilla, July 21, at fls. of Sida hedcracea.) 
. . pennigera, var. sidcejioris, n. var. 
Family. APID.^F1. 
Subfamily. PHILEREMINHi. 
Hesperapis. 
About 6 mm. long ; head and thorax black, with short pubescence; 
abdomen dull ferruginous, with light hair-bands ; hind tibise and 
tarsi with very short white tomentum, and long black bristles. 
(Mesilla Park, April, C. M. Barber.) . . elegantula, CklL 
