Mr. F. Smitli on the Genus Ceutrls. 367 



*6o. Centris aniens. 



Female. Length 7 lines. Head and thorax black, legs and 

 abdomen ferruginous ; the cljpeus, labrum, mandibles, and 

 scape of the antennae in front pale yellow ; a narrow fascia on 

 the anterior margin of the cljpeus, and two large subquadrate 

 spots at its base, black ; the mandibles ferruginous at their 

 apex ; the face covered with short ])ale downy pubescence, that 

 on the vertex fuscous ; the cheeks have a white pubescence. 

 Thorax clothed above with dull ferruginous pubescence ; on 

 the sides and beneath it is pale and glittering ; the legs with 

 fulvo-ferruginous ])ubescence ; wings subhyaline. Abdomen : 

 a little pale fulvous pubescence at the base ; the apical margin 

 of the fifth segment and the sides of the sixth with bright 

 fulvous pubescence ; the first segment, and the apical margins 

 of the second and third, with a band that is widest in the 

 middle, abruptly narrowed toward the lateral margins, to which 

 it does not extend, black ; a waved black line in the middle 

 of the fourth segment, and sometimes an indistinct one on the 

 fifth, the two latter frequently wanting. 



Hab. Ega (Brazil). 



*GQ. Centris apicalis. 



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

 three basal segments of the abdomen blue- or green-black j the 

 three apical ones, the abdomen beneath, and the legs ferrugi- 

 nous ; the apical segments, in some examples, more or less 

 yellow ; the scape of the antennae in front ; the clypeus, labrum, 

 and mandibles yellow ; the anterior margin of the clypeus 

 narrowly black or nigro-piceous, the dark margin augulated in 

 the middle, also a large black spot on each t^idc at its base ; 

 the pubescence on the cheeks and face whitish, and fulvous 

 on the vertex. Thorax clothed above with fulvo-ochraceous 

 pubescence, paler on the sides and beneath ; the pubescence 

 on the legs fulvous ] the wings hyaline. On the third segment 

 of the alxlomen there is usually a luirrow abbreviated yellow 

 line. The male diffVirs only in having the clypeus entirely 

 yellow, and in sometimes having a yellow line also on the 

 second segment. 



Hah. Saint Bartholomew. 



*67. Centris insularis. 



Female. Length 7 lines. Black ; the abdomen nigro-a;neous 

 above, with the apical margins of the fourth and the following 

 segments feiTUginous. Head: the mandibles, labrum, cly[)eus, 

 and scape of the antennai in front yellow ; a large ovate black 



2()* 



