50 
Bulletin of Laboratories of Denison University 
[Vol. XI. 
Parandrena. 
Abdomen red, ....... i 
Abdomen black, ...... 2 
1. Clypeus and sides of face yellow. (Mesilla Valley, Sept.) 
pectidis^QVW.^ 9* 
Face all black. (Mesilla Valley, April.), andrenoides, Cress. 
(var. bicolor, Rob.) 9 • 
2. Clypeus and sides of face yellow, flagellum ferruginous be- 
neath, .... andrenoides, Cress., 
Face all black, ...... 3 
3. Length 7 — 7}^ mm., legs wholly black, apex of wings 
slightly milky. (Mesilla Valley, Sept), olivice, Ckll., 
Length 8 — mm., tarsi of $ wholly pale ferruginous. 
(Mesilla Valley, Sept.) , . . rhodocerata, QVW, 
Note. — P. andrenoides is the type of the genus ; the others are not strictly 
congeneric, and are placed here provisionally. The last two are referred by Mr. 
Ash mead to Rhophitoides . 
Nomia, 
Abdomen ferruginous, or ferruginous and black. (Albu- 
querque, Mesilla Valley.), . . nevadensis, Crt?,s. 
Abdomen black, apical margins of segments not greenish; 
9 like an Andrena, (Albuquerque, Mesilla Valley.), 
. . . . persimilis, Ckll. 
Abdomen black, apical margins of segments light green 
or greenish-white, ..... i 
I. Size large, 17 mm. long or over. (Northern N. M.) nortoni. Cress. 
Size smaller, not 15 mm. long. (Santa Fe, Mesilla Val- 
ley, Rincon, etc.), . . . poxii, Dalla Torre. 
Eunomia. 
Pubescence cinereous, with a yellowish tinge. (Mesilla Valley.), 
. . . . heteropoda. Say. 
Pubescence dull yellowish ; tibiae and tarsi in 9 more or less fulvous. 
(Northern N. M.), . . . . . apacha. Cress. 
Pubescence (<^) brownish-ochraceous, legs shining; 9 entirely black 
or brown-black, .... marginipennis. Cress. 
Note. — E. heteropoda ^ was taken at Mesilla Park, Sept. 17, in a sandy 
place. The other two species I have not seen. 
Subfamily. PANURGIN^. 
Protandrena. 
Large species, 10 mm. long or over, . . . . i 
Smaller species, less than 10 mm. long, . . . .2 
1. Stigma ferruginous. (Mesilla Valley.) mexicanorum, Ckll. 
Stigma very dark brown. (Santa Fe, Albuquerque.), 
. . mexicanorum, race asclepiadis, Ckll. 
2. Tarsi piceous in 9 - (Albuquerque.), . trifoliata, CkW. 
Tarsi rufous in 9 5 yellowish-white in (Mesilla Val- 
ley.), .... heieromorpha.^ Ckll. 
