1865.] 193 



Genus CENTRIS, Fabr. 

 Centris versicolor, Fabr. 



Apis versicolor, Fabr. Ent. Syst. ii, p. 340, £> • 



Centris versicolor, Fabr. Syst. Piez. p. 359. St. Farg. Hym. ii. p. 154. 



Hemisia versicolor, Klug. Ulig. Mag. vi, p. 227. 



Centris tabaniformis, Fabr. Syst. Piez. p. 358, % . 



Centris decolorata, St. Farg. Hym. ii, p. 160, % . 



Collection. — Eat. Soc. Philad. Two <? specimens. 



Centris apicalis. Guer. 

 Anthophora apicalis, Guer. Icon. Reg. Anim. iii, p. 455, pi. 74, fig. 4. 

 Anthophora versicolora, Guer. LaSagra's Hist. Cuba, Ins. p. 780. 

 Centris pozcila, St. Farg. Hym. ii, p. 154. 



Collection. — Ent. Soc. Philad. Seven 9 , two % specimens. 



Closely allied to C. versicolor, but is at once distinguished by the legs 



being entirely black. 



Centris iEthiops, n. sp. 



Entirely deep black ; wings dark fusco-byaline, with a violaceous reflection : 

 abdomen shining. 



Female. — Deep black, shining, closely and finely punctured; occiput 

 and cheeks beneath, clothed with long black pubescence, thin on the 

 face and vertex ; clypeus prominent, polished, with a few deep, scat- 

 tered punctures, the anterior margin truncate; labrum densely pube- 

 scent; mandibles piceous ; antennae piceous-black, the flagellum paler 

 beneath. Thorax densely clothed with black pubescence ; metathorax 

 naked, shining; tegulae dull black. Wings dark fusco-hyaline, with a 

 violaceous reflection ; nervures black. Legs black, the pubescence 

 black. Abdomen deep shining black, closely and finely punctured, the 

 punctures indistinct on the apical margins of the segments; sides of the 

 basal segment and the apex clothed with black pubescence; beneath 

 tinged with piceous, and clothed with black pubescence. Length 7 

 lines; expanse of wings 12i lines. 



Collection. — Ent. Soc. Philad. One specimen. 



Centris fulviventris, n. sp. 



Black; head, thorax, legs, and base and apex of abdomen, densely clothed 

 with fulvo-ochraceous pubescence; legs brown; most of clypeus, labrum, man- 

 dibles, flagellum beneath, and the abdomen, fulvous; wings subhyaline. 



Female. — Black; head and thorax densely clothed with fulvo-ochra- 

 ceous pubescence, paler on the cheeks and pleura; a large spot on eacli 

 side of the clypeus, nearly confluent on the disk, the labrum and the 

 mandibles except tips, pale fulvous; antennas piceous, the flagellum 

 beneath testaceous; tegulae piceous, margined exteriorly with testace- 

 ous. Wings pale fusco-hyaline; nervures pale fuscous. Legs brown. 



