82 APID.E. 



pubescent, that on the clypeus slightly fulvous ; the vertex with 

 a little black pubescence. The thorax on the sides and beneath 

 with white pubescence ; above, it is thin and mixed with black ; 

 wings subhyaline, the nervures and tegulae black ; the first joint of 

 the tarsi with fulvous pubescence beneath. Abdomen slightly 

 shining, with a thin, short, black pubescence above ; the apical 

 • margins of the segments with narrow yellowish- white pubescence ; 

 beneath densely clothed with pale fulvous pubescence, except on' 

 the two apical segments, where it is black. 



Hah. Mexico, Oajaca. 



60. Megachile breviuscula. 



Female. Length 5| lines. — Black, short and broad, with fulvo- 

 hyaline wings, the nervures fusco-ferruginous. The vertex 

 shining and very finely punctured ; the clypeus shining and 

 having stronger punctures ; the sides of the face with griseous 

 pubescence, on the vertex it is fuscous and thin ; the flagellum 

 fulvous beneath, except at the base and apex ; the mandibles fer- 

 ruginous, with the base and apex black. The thorax with a thin 

 short fuscous pubescence above ; on the metathorax, the sides, and 

 beneath it is whitish ; the tegulae, the tarsi, tips of the femora and 

 of the tibiae ferruginous. Abdomen short and cordate, with a little 

 thin pale fulvous pubescence at the base ; the apical margins of 

 the segments with narrow pale fulvous pubescent fasciae ; densely 

 clothed beneath with a glittering pubescence, which changes in 

 colour when viewed in different lights ; whitish in the middle, and 

 brown mixed with black at the sides. 



Hah. Mexico, Orizaba. 



61. Megachile irritans. 



Female. Length 5 lines. — Black, with fuscous wings, the anterior 

 pair with the front margin dark fuscous with a violet iridescence. 

 The face with white pubescence ; the clypeus strongly punctured, 

 its anterior margin slightly emarginate ; the vertex with a little 

 black pubescence. Thorax shining, finely and not very closely 

 punctured ; a fringe of black pubescence passes along the posterior 

 margin of the scutellum to the insertion of the posterior wings ; at 

 the lateral angles of the metathorax and beneath the tegulae, in 

 front, there is a tuft of white pubescence ; the claws of the tarsi 

 ferruginous. Abdomen cordate, shining, except the apical seg- 

 ment, which is opaque ; the sides with a little black pubescence ; 

 beneath densely clothed with white pubescence. 



Hah. Mexico, Orizaba. 



62. Megachile Candida. 



Female. Length 5| lines. — Black, with the pubescence pale ful- 

 vous. The face pubescent, the clypeus slightly so. and punctured : 



