MEGACHILE. 73 



with short pale pubescence and with long pubescence of the same 

 colour, its apical margin emarginate. 



Hab. Santarcm. 



This is probably the male of M. compacta. 



34. MegachUe strenua. 



Male. Length 4j lines. — Black, with the legs ferruginous; the 

 anterior tarsi dilated. The face clothed with bright golden-yellow 

 pubescence, that on the clypeus and on the cheeks is paler, on the 

 vertex there are a few black scattered hairs. The thorax above 

 and the vertex of the head closely punctured ; a patch of white 

 pubescence behind the tegulse ; the metathorax with white pubes- 

 cence ; the anterior tarsi pale testaceous, the apical joint ferrugi- 

 nous ; the dilated joints fringed behind with whitish pubescence, 

 the margin of the fringe fusco-ferruginous ; the intermediate and 

 posterior legs with dark fuscous stains, the tarsi dark above ; a 

 broad dark fuscous cloud on the anterior margin of the fore wings. 

 Abdomen closely punctured ; on the apical margin of the first, 

 second, and third segments, laterally, there is a patch of white 

 pubescence. 



Hab. St. Paulo, on the Amazons. 



35. Megachile agilis. 



Male. Length 3| lines. — Black, with the base and apex of the ab- 

 domen ferruginous. A little whitish pubescence between the 

 antennae and on the clypeus ; on the face, at the sides of the cly- 

 peus, it is whitish, but intermixed with black ; on the vertex it is 

 black ; the cheeks with a long beard of white pubescence ; the 

 rlagellum obscurely fulvous beneath. Thorax closely punctured ; 

 the disk thinly sprinkled with short black pubescence, the meta- 

 thorax with pale fulvous, that on the thorax beneath long and 

 white; the legs obscurely rufo-piceous beneath, the anterior pair 

 being ferruginous beneath, the tarsi and apical joints of the in- 

 termediate and posterior pair of the same colour; wings fulvo- 

 hyaline, clouded beyond the submarginal cells, with the nervures 

 and tegulae rufo-testaceous. The apical margins of the segments 

 of the abdomen fringed with fulvous pubescence ; the apical seg- 

 ment notched in the middle. 



Hab. St. Paulo, on the Amazons. 



36. Megachile rubicimda. 



Male. Length 4| lines. — Black, with the legs and the abdomen be- 

 neath and at the base ferruginous. The face with a dense fulvous 

 pubescence, that on the clypeus being bright yellowish white ; it is 

 also pale on the cheeks, and on the legs and body beneath. The thorax 



