Art. III.] Cockerell, New Mexico Bees, 51 
Halictoides. 
Very small, about 6 mm. long. (Organ mts., at Gymnolomia fls.), 
. . . . tinsleyi, CklL, J • 
Larger, 8 mm. or over ; 9 with hind margins of abdominal segments 
testaceous. (Santa Fe, Rinconada, Mesilla Valley, at fls. of Heliart' 
thus Verbesina, Aug. to Oct.), . . fuarginatus, Cress. 
Note. — H. tinsleyi is perhaps not strictly congeneric with 7 nargtnatus. 
PSEUDOPANURGUS. 
About 6 }i mm. long, a shining boss adjacent to the top of each eye ; 
clypeus and lateral face-marks in $ yellow. (Albuquerque, Me- 
silla Valley, Aug., Sept., at Bigelovia fls.) . . rugosus, Rob. 
Larger, without the shining boss at the summit of the eyes. (Mesilla 
Valley, at Helianthus fls.) .... cethiops^ Cress. 
Note , — The first species is my P. f rater cuius ; Robertson says it is his rugo- 
sus, but I could not so determine from his description. 
Panurginus. 
Face with light markings, ...... i 
Face without light markings, ..... 7 
1. Females, face with only a kidney-shaped yellow mark. 
(Mesilla Valley.) . . . renimaculatus^ Ckll. 
Males, ....... 2 
2. Pale color of face confined to clypeus ; first recurrent nerv- 
ure not uniting with second transverso cubital. (Organ 
Mts.) ..... townsendi, Ckll. 
Pale color of face not confined to clypeus, . . 3 
3. Pale color confined to clypeus and lateral marks, . . 4 
Pale color not confined to clypeus and lateral marks, . 6 
4. Face-marks yellowish-white, face with long white hair. 
(Albuquerque.) .... hirsutifrons^ Ckll. 
Face-marks lemon yellow, face little or not hairy, . 5 
5. Front hairy ; lateral face-marks extending some distance 
above level of top of clypeus. (Santa Fe at fls. of Rud- 
^beckia.) .... albitarsis, Cress., 
Front not hairy ; lateral face-marks hardly extending above 
level of top of clypeus. Length 5 mm., flagellum fer- 
ruginous beneath, except at base ; eyes dark sage green; 
wings very faintly dusky, nervures and stigma dark 
brown. Tubercles with a testaceous spot. (Santa Fe, 
Aug. 5.) . . patiper. Cress., vzx. Jlavotinctus^ n. var. 
6. Scape wholly black. (Santa Fe.) . . . . 
. boylei^ Ckll. (? var. of ornatipes Cress.) 
7. Flagellum dark ; nervures and stigma testaceous, 
. . . . albitarsis^ Cress., 9 * 
Flagellum largely testaceous beneath ; very smooth spe- 
cies 8 mm. long. (Las Cruces, at fls. of Helianthus.) 
perlizvis., Ckll., 9 ^ 
