Dec, 1914] Cockerell: Bees From Ecuador and Peru. 321 



white ; cheeks with appressed white hair ; vertex with extremely scanty black 

 hair ; scape red in front, fuscous behind, except at base ; flagellum short, fus- 

 cous, rufotestaceous beneath ; mesothorax dull from a very fine dark pruinose 

 pilosity ; scutellum with short erect black hairs; legs rufopiceous, hind legs 

 redder behind ; hair of legs black, except the large brush on outer side of 

 hind basitarsi, which is creamy white, dark fuscous at apex. 



Habitat. — Guayaquil (f. Buchwald; Alfken coll. 26). 



Almost exactl}^ like C. mocstus (Cress.), but easily known by the 

 white "hair on outer side of hind basitarsi, and the largely red scape. 

 Both have the anterior basitarsi broadened and modified. 



Tetrapedia alfkeni new species. 



Female. — Length a little over 7 mm. ; black, the wings dark fuliginous, not 

 whitened apically ; hair of face and cheeks white, of vertex, thorax, abdomen 

 and legs black, except that the hind tibiae have long white hairs on inner side ; 

 tongue golden ; clypeus shining, sparsely punctured ; scape bright chestnut red, 

 fuscous in middle ; flagellum dull reddish beneath, except at base ; mesothorax 

 shining, strongly and rather closely punctured ; first r. n. joining second s. m. 

 before middle ; hind spur very long pectinate ; abdomen shining black, beneath 

 with long black hair. 



Habitat. — Guayaquil, 2 females (v. Buchwald; Alfken coll. 27) ; 

 Guayaquil, May-June, 1913 {Ernes). 



Nearly the same as T. maura Cresson, but the mesothorax is 

 strongly and rather closely punctured, and the hind tibiK have no 

 pale hair at apex on outer side. Both have a stout tooth at base of 

 anterior basitarsi. 



Exomalopsis zexmeniae Cockerell. 



Guayaquil, 2 females, i male {v. Buchzmld; Alfken coll. 25) ; San 

 Bartolome, Peru, July, 1913, i male (Brucs). 



The male, not before known, is almost exactly like that of E. 

 penelope Ckll., but has the tegulje very dark rufous, instead of amber 

 color as in penelope. The female is readily known from penelope 

 by the scutellum having black hair and the scopa of hind tarsi being 

 wholly black-haired behind. The female is almost identical with E. 

 paragnayensis manni Ckll., from Natal, Brazil; but nianni has a 

 shorter clypeus, and the scutellum has white hair along its hind 

 border. The type of manni had the abdominal segments extended, 

 when contracted they would appear as in zexmeni(£. 



Undoubtedly these insects belong to E. globosa (Fabricius), as 



