PAKACOLLETES. 3 



5. Colletes rufipes. 



Female. Length 4| lines. — Black ; the face with white pubescence, 

 that ou the disk of the thorax fulvous ; the abdomen with a short 

 fulvous pile. The labrum, and the mandibles in the middle, rufo- 

 piceous ; the cheeks with white pubescence. The thorax densely 

 pubescent, pale fulvous on the sides and beneath ; wings hyaline 

 and iridescent, the nervures ferruginous ; legs ferruginous ; the 

 tloccus on the posterior femora at their base white. Abdomen 

 conical, the apical margins of the segments pale testaceous. 



Hah. Bahia. 



6. Colletes senilis. 



Female. Length -4-4:| lines. — Black ; the pubescence on the face pale 

 fulvous, the rest griseous. The head closely punctured ; the fla- 

 gellum of the antennae, except two or three of the basal joints, ful- 

 vous beneath ; the mandibles rufo-piceous in the middle. Thorax 

 above more strongly punctured than the head, but not so closely, 

 and having a mixture of black and white pubescence ; that on the 

 scutellum entirely black ; wings hyaline and iridescent, the ner- 

 vures black ; the pubescence beneath cinereous ; the floccus on the 

 posterior femora at their base beneath dense, long, and white ; the 

 seopa on the outside of the posterior tibite fuscous. Abdomen 

 smooth, shining, and impunctate ; the apical margins of the seg- 

 ments with whitish pubescent fascias. 



Male. Very closely resembles the female, biit the pubescence on the 

 thorax above is entirely griseous. In lioth sexes the claw-joint of 

 the tarsi is rufo-piceous. 



Hah. Para; Petropolis (Brazil). 



7. Colletes bicolor. 



Female. Length 5 lines. — Head and thorax black, the abdomen dark 

 metallic blue, shining and impunctate. The head with black pubes- 

 cence. The thorax densely clothed with short fulvo-ferruginous 

 piibescence ; wings hyaline and slightly iridescent, the nervures 

 black ; the legs black and with black pubescence, the claw-joint of 

 the posterior tarsi ferruginous, 



Hab. Mendoza. 



PARACOLLETES, Smith. 



1. ParacoUetes nitidus. 



Female. Length 7 lines, — Head and thorax nigro-seneous, with 

 violet tints on the mesothorax ; the abdomen dark metallic green. 

 The face with a short hoary pubescence ; the vertex closelv and 



b2 



