378 HYMENOPTERA. 



face, the clypeus having merely a dark hne on each side ; the 

 scutelhim pale testaceous ; the anterior femora in front, towards 

 their apex, and the tibia; above having a yellow line ; the inter- 

 mediate and posterior tibiae have a spot at their base, and the 

 femora a yellow spot near their apex beneath ; otherwise as in 

 the other sex. 



Hab. Jamaica. 



45. Centris ephippium. B.M. 



Male. Length 9 lines. — Black, the labrum and clypeus pale 

 yellow testaceous, the margins of the latter fuscous ; the labrum 

 densely clothed with a short pale woolly pubescence ; the man- 

 dibles have a pale testaceous spot near their apex. Thorax : 

 the disk behind the insertion of the wings densely clothed with 

 short ochraceous pubescence, the scutellum clothed with the 

 same ; the sides of the metathorax, the thorax beneath, the legs 

 and abdomen, entirely black. 



Hab. Venezuela. 



46. Centris cineraria. B.M. 



Female. Length 7 lines. — Head and thorax black, the thorax 

 clothed above with short white pubescence, on the sides and 

 beneath it is black ; the legs have also a black pubescence ; the 

 Avings subhyaline, their nervures black. Abdomen blue-black, 

 fringed at the sides and apex with black haii-s. 



Hab. Chili. 



47. Centris Mexicana. 



Female. Length 7 lines. — Black, the three basal joints of the 

 antennae rufo-testaceous, the thorax densely clothed with ochra- 

 ceous pubescence ; wings fuscous, palest towards their margins ; 

 the legs have a black pubescence, that on the posterior pair very 

 long and dense. Abdomen, the basal segment covered with pale 

 ochraceous pubescence ; the apex fringed with black. 



Hab. Mexico. 



48. Centris aterrima. B.M. 



Male. Length 8 lines. — Entirely black, the pubescence of a 

 sootv-black ; the labrum rugose. Thorax : the wings dark fus- 

 cous, paler towards their apical margins. Abdomen shining, 

 delicately reticulated, and sparingly covered with pubescence ; 

 at the sides and at the apex it is more dense. 



Hab. Mexico. 



