370 Mr, F. Smith on the Genus Centric. 



*76. Centris thoracica. 



Female. Jx,T\gt\i 7 lines. Black ; the thorax above clothed 

 with bright rich fulvous pubescence ; that on the head, legs, 

 thorax beneath, and on the abdomen black ; the legs obscure 

 nigro-piceous ; the flagellum of the antenme, except the two 

 basal joints, testaceous. 



Hah. San Domingo. 



*77. Centris concinna. 



Female. Length 7 lines. Head and thorax black ; the legs 

 and abdomen feiTuginous, the latter black at the base above. 

 The clypeus, face on each side of it, the labrum, mandibles, 

 and scape in front yellow ; a large subovate black spot 

 at the base of the cljpeus that terminates in a point in front, 

 and which has a narrow yellow line down the centre ; the 

 pubescence on the cheeks white, that on the face and vertex 

 fulvous. Thorax clothed with fulvous pubescence above, on 

 the sides and beneath it is paler, on the legs it is fulvo- 

 femiginous ; wings subhyaline j the tegulae pale testaceous. 

 Abdomen : the basal segment with pale fulvous pubescence ; 

 on the apical margin of the second and following segments 

 it is fulvous. 



Male. Smaller than the female, in all respects closely re- 

 sembling it ; the clypeus has a black line at its lateral margins ; 

 the abdomen has the second and third segments more or less 

 ferruginous laterally. 



Hah. Tapajos (Brazil). 



*78. Centris simillima. 



Female. Length 5 lines. Head and thorax black ; legs and 

 abdomen ferruginous. Head : the labrum, mandibles, clypeus, 

 and face on each side of it yellow ; the basal margin of the 

 clypeus narrowly black, also an angulated black spot at its 

 anterior margin. Thorax clothed above with pale fulvous, and 

 beneath with whitisli pubescence ; on the tarsi, intermediate 

 and posterior tibiae the pubescence is fulvous ; wings sub- 

 hyaline J tlie tegulffi white. 



Hah. San Domingo. 



-'A This species resembles C. lampes; but the marking of the 

 clypeus alone will distinguish it. 



* 



79. Centris perforator. 



Female. Lengtli G lines. Head and thorax black, legs and 



