25 ANDKENIDJ3. 



flagellum of the antennae fulvous beneath towards the apex. Thorax 

 shining and punctured ; wings Iryaline and iridescent, the nervures 

 fusco-ferruginous. Abdomen impunctate at the base, and very finely 

 punctured towards the apex ; the apical margin of each segment, 

 except the basal one, with a white pubescent fascia. 



Male. A little smaller than the female, of the same jet-black 

 colour, with similar white pubescence, and the same bright polished 

 abdomen ; the latter is oblong-ovate in the male, and of a conical 

 shape in the female, the apex being pointed. 



Hah. East Florida. 



3. Colletes intricatus. 



Female. Length 5J lines. — Black ; the thorax clothed with fulvous 

 pubescence ; the abdomen shining, and closely and finely punc- 

 tured, the base most strongly so. The head shining, punctured, 

 the clypeus coarsely so ; the face with dark griseous pubescence. 

 Thorax with the pubescence beneath the wings fuscous, that on 

 the legs beneath paler, the floccus on the posterior femora beneath 

 of a dirty white ; the scopa on the posterior tibiae fuscous ; wings 

 subhyaline, the nervures fusco-ferruginous, the tegulae testaceous. 

 Abdomen with a little pale fulvous pubescence at the base. 



Male. Length 4—4^ lines. — The face with pale fulvous pubescence, 

 on the vertex and thorax above it is fulvous; wings as in the 

 female. Abdomen shining, closely punctured; the margins of the 

 first and second segments depressed, all the apical margins with 

 pale pubescent fasciae. 



Hah. Mexico, Orizaba. 



4. Colletes griseus. 



Female. Length 5 lines. — Black ; the abdomen shining, the pubes- 

 cence griseous. Head — the pubescence griseous, that on the cly- 

 peus, which is strongly punctured, whitish, as it is also on the 

 cheeks. Thorax strongly jmnctured, and clothed with erect gri- 

 seous pubescence; the floccus on the posterior femora beneath 

 nearly white ; the scopa on the tibiae fuscous above and whitish 

 within and beneath; wings hyaline and iridescent, the nervures 

 black. The apical margins of the segments of the abdomen with 

 very narrow white pubescent fasciae, which are usually more or 

 less interrupted on the first and second segments. 



Male. Length 4| lines. — Yery closely resembles the female, but 

 has the antennae nearly as long as the thorax ; the abdomen very 

 bright and shining and more oblong, the segments narrowly bor- 

 dered with white above and beneath. 



Hah. Mexico, Oajaca. 



