Art. III.] 
Cockerell, New Mexico Bees. 
67 
II. Pubescence pale grey, with a faint ochreous tinge, (Me- 
silla Valley, Socorro, Albuquerque.) . agilis, Cress. 
Pubescence more or less strongly ochraceous. (Santa Fe.) 
. . agihs var. aurigenia^ Cress. 
Note . — The male of grindelice is readily separated from that of montana as 
follows : 
Third and fourth abdominal segments covered, even at 
base, with very pale ochraceous hair ; last segment with 
fuscous or black hair; mandibles with a yellow spot, montana., Cr. 
Third and fourth segments with the black surface exposed 
except on apical margins; last segment with ochraceous 
hair; mandibles with no yellow spot, . grindelice 
Females. 
Hair on inner side of basal joint of hind tarsus black or fuscous, I 
Hair on inner side of basal joint of hind tarsus ferruginous, . 4 
1. Pubescence of thorax above bright fulvous, luteicornis, Ckll. 
Pubescence of thorax above pale, with some black, . 2 
2. Some black hair behind ocelli. Head not so broad as in 
pallidicincta., much like confusa, for which it has been 
taken, but hair of legs, except on inner side of tarsi, 
and somewhat on apices of tibiae, entirely dull white. 
(Santa Fe, with the $ .) . grindelice., Ckll., n. sp. 
Hair behind ocelli all pale, . . . .3 
3. Larger, head extremely broad, abdomen with conspicuous 
white hair-bands. (Gila R., Santa Fe, etc.) pallidicincta, Ckll. 
Smaller, head not so broad. (Mesilla Valley.) intermedia. Cress. 
4. Very large and robust, about 16 mm. long; pubescence of 
pleura black, .... obliqua, Say. 
Smaller, pubescence of pleura ochraceous or grey, 5 
5. Scutellum and middle of mesothorax with conspicuous 
black hair. (Gila R., etc.) . . gilensis, Ckll. 
Dorsum of thorax without black hair, or with only a few 
inconspicuous black hairs, ... 6 
6. Larger, pubescence of thorax pale ochraceous, menuacha, Cress. 
Smaller, pubescence of thorax bright fulvous or at least 
strongly ochraceous, . agilis var. aurigenia, Cress. 
Note . — Several other species of Melissodes have been collected in the female 
sex, but are not at present named, the material being rather inadequate for sat- 
isfactory study. M. nevadensis, Cress., has been taken in the Mesilla Valley, 
but I have no specimens at hand at the present time. 
Xenoglossa. 
Legs, ekcept the tarsi, black ; size smaller. (Mesilla Valley.) prttinosa, . 
Legs wholly rufous or fulvous ; size larger, . . . i 
I. Abdomen red, very large and stout species. (Mesilla Val- 
ley, Gila R.) . . . . Patricia, Ckll. 
Abdomen black. (Mesilla Valley.) . strenua. Cress. 
Note . — All these species may be found in the flowers of Cucurbita. 
