il8 Mr. T. D. A. Cockerell — Descriptions and 



Type. Young adult male. B.M. no. 18. 11. 11. Q,^. 

 OnV'inal number 247. Collected 2nd July, 1918. 



This species is cleaily most closely allied to C. hergi, but is 

 distinguished by the characters above described. From 

 C. tuciimanns, 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. 



" Lives in very dry red earth. ^' — E. B. 



Named in honour of Gen. Foch, by whose genius victory 

 in the lecent great struggle has been so greatly accelerated. 



9. Marmosa elegans pallidior, Thos. 



. S. 253, 257, 273; ?. 289. 



The white middle area o£ the belly is quite as in the 

 " Acochayas*' of Bolivia and of Umahuaca, Jujuy, those of 

 Tucuman and Leon, Jujuy (J/, e, cinderella) having slaty- 

 grey bases to the ventral hairs. 



*' Caught among the rocks.'' — E. B. 



XI. — Descriptions and Records of Bees. — LXXXIII. 

 By T. D. A. Cockerell, University of Colorado. 



Proteraner rhois, Cockerell. 



Male, Meadow Valley, Mexico (Townsend). 

 New to Mexico. 



Sj^hecodes mexicanorum, sp. n. 



? . — Length 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 ; anteinise entirely 

 dark ; clypeus strongly punctured ; front finely and densely 

 punctured ; mesotliorax and scutellum strongly punctured, 

 but shining, the punctures quite widely separated on disk ; 

 area of metathorax shining, with about twelve strong longi- 

 tudinal plicae ; jiosterior face of metathorax very coarsely 



