118 Mr. T. D. A. Cockerell—Descriptions and 
Type. Young adult male. B.M. no. 18. 11. 11. 68. 
Original number 247. - Collected 2nd July, 191. 
This species is clearly most closely allied to C. berg, but is 
distinguished by the characters above described. From 
C. tucumanus, its next neighbour northwards, as also from 
C. mendocinus to the south, it is readily separated by its 
much smaller size and the darkened upper surface of the 
muzzle. 
“ Tiives in very dry red earth.’—Z. B. 
Named in honour of Gen. Foch, by whose genius victory 
in the 1ecent great struggle has been so greatly accelerated. 
9. Marmosa elegans pallidior, Thos. 
Gi oe, 207, 2ials 92. 9280. 
The white middle area of the belly is quite as in the 
“ Acochayas” of Bolivia and of Umahuaca, Jujuy, those of 
‘T'ucuman. and Leon, Jujuy (MV. e. cinderella) having slaty- 
grey bases to the ventral hairs. 
“ Caught among the rocks.” —Z. B. 
XI.—Deseriptions and Records of Bees —UX XXIII. 
By T. D. A. CockrerELL, University of Colorado. 
Proteraner rhois, Cockerell. 
Male, Meadow Valley, Mexico (Townsend). 
New to Mexico. 
Sphecodes mexicanorum, sp. n. 
? —Leneth about 8°5 mm. 
Black, with the abdomen red, the first segment with a 
large black area occupying the base and extending more than 
halfway to apex in middle, the third and fourth segments 
with a black stain in middle, the fifth and apical segments 
black. Head and thorax with dull white hair ; mandibles 
dark reddish apically, with a blunt inner tooth far from apex ; 
labrum short, simple, transversely sulcate ; antenne entirely 
dark ; clypeus strongly punctured; front finely and densely 
punctured ; mesothorax and scutellum strongly punctured, 
but shining, the punctures quite widely separated on disk ; 
area of metathorax shining, with about twelve strong longi- 
tudinal plice; posterior face of metathorax very coarsely 
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