Mr. F. Smith on the Genus Ceutris. 363 



*28. Centris semiccerulea. 



Male. Length 8^ lines. Head and thorax black, abdomen 

 blue. The pubescence on the face and vertex black, that on 

 the cheeks and thorax above cinereous ; the anterior and in- 

 termediate legs have a black pubescence, that on the posterior 

 tibiffi and basal joint of the tarsi fulvous. The basal segment 

 of the abdomen, and the apical margins of the following seg- 

 ments, with a fascia of pale fulvous pubescence ; the wings 

 fusco-hyaline ; the clypeus and labrum yellow, the former witli 

 a minute black triangular spot at its anterior margin ; a pale 

 testaceous spot near the apex of the mandibles. 



Hah. Venezuela. 



29. Centris flavopicta. 



Centris Jlavopicta, Smith, Cat. Hym. Ins. Apidce, ii. p. 373, (S . 

 Hab. Ega (Brazil). 



30. Centris mexicana. 



Centris mexicana, Smith, Cat. Hym. Ins. Apidce, ii. p. 378, 5 . 

 Hab. Mexico. 



31. Centris dentata. 

 Centris denUtta, Smith, Cat, Hym. Ins. Apidce, ii. p. 374, S • 

 Hab. Tapajos (Brazil). 



32. Centris maculijrons. 

 Cetdris macidifrom, Smith, Cat. Hym. Ins. Apidce, ii. p. 372, $ . 

 Hab. Brazil ; Mexico. 



33. Centris bomhiformis (Hemesia). 



Centris hotnhifonnis {Hemesia), Spin. Ann. Soc. Ent. France, x. 

 p. 148, $. 



Hab. Cayenne. 



34. Centris nitens. 

 Centris nitens, St.-Farg. Hym. ii. p. 163, $ . 

 Hab. Brazil. 



35. Centris lineolata. 

 Centris lineolata, St.-Farg. Hym. ii. p. 158, $ . 

 Hab. Ega, Tapajos (Brazil) ; Cayenne. 



36. Centris fasciata. 

 Centris fcisciatd, Smith, Cat. Hym. Ins. Apidce, p. 377,$ J. 

 Hab. Jamaica. 



