372 Mr. F. Smith on the Genus Centris. 



tarsi fringed with black pubescence ; wings subhyaline, the 

 nervures dark fuscous. Abdomen : the basal segment Avith 

 yellow pubescence, the fringe on the apical segments whitish. 

 Hab. kSantarem (Brazil). 



82. Centris elegans. 



Female. Length 8^ lines. Head, thorax, and legs black ; 

 the abdomen dark blue. Head : a longitudinal line on the 

 clypeus and on each side of the anterior margin a transverse, 

 oblong, pear-shaped spot, pointed within and almost uniting 

 with the longitudinal line, a line at the inner margin of the 

 eyes not extending above the base of the clypeus, two ovate 

 spots on the labrum, and a spot at the base of the mandibles 

 white, the tips of the latter also white ; the pubescence on the 

 head, thorax, and legs black ; wings fuscous, palest at their 

 apical margins. The abdomen obscurely testaceous beneath, 

 its apical segments fringed with black pubescence. 



Hah. Island of St. Vincent. 



83. Centris crassipes. 



Male. Length 5^ lines. Black ; the clypeus, labrum, and 

 mandibles -white. The pubescence on the cheeks, a tuft at 

 the base of the antenna^, and the fringe on the anterior femora 

 behind white ; the thorax clothed with mouse-coloured pu- 

 bescence, behind the scutellum and at the base of the abdomen 

 it is paler ; the wings h}'aline ; the posterior femora and tibia 

 incrassate ; the pubescence on the posterior legs black. 

 Abdomen shining black, with a blue tinge. 



Hab. Jamaica. 



84. Centris picta. 



Female. Length 7 lines. Black, variegated with yellow 

 spots and fasciae. Head : the labrum, sides of the face as 

 high as the insertion of the antenna?, a spot at each lateral 

 anterior angle of the clypeus, and a minute spot at the base 

 of each mandible yello'\A' ; the cheeks have a thin griseous 

 pubescence, that on the vertex is fuscous. Thorax : a spot 

 on each side of the collar, two on the tegulae, and also two 

 ovate ones on the scutellum yellow ; the pubescence on the 

 sides and beneath the thorax fuscous ; the anterior and inter- 

 mediate legs Avith black pubescence, except that on the tarsi 

 beneath, which is ferruginous, the claw-joint being also feiTu- 

 ginous ; the posterior legs more or less obscure feiTUginous ; 

 tlie tibiffi and basal joint of the tarsi with long, dense, fulvous 

 pubescence, the tarsal joint very broadly expanded, its pu- 

 bescence on the inner side ferruginous. Abdomen : the 



