296 E. T. CRESSON. 



The shape of this remarkable insect is very similar to that of Apis 

 meUifica % , but the oral organs, as far as can be examined, seem to re- 

 fer it to Andrenidse, and the neuration of the wings to Megacillissa, 

 Smith. 



Megacillissa T subaurata, n. sp. 



% . — This is like the preceding species in shape, but differs by the 

 pubescence of the head, thorax, legs, base and apex of abdomen and 

 venter being yellowish-fulvous, that on face and anterior margin of tho- 

 rax above being somewhat golden ; that on vertex and rest of thoi'ax 

 above mixed with blackish, and that on the cheeks, occiput, base of 

 abdomen and venter palest; legs pale fulvous, dusky at base, the four 

 apical joints of tarsi fuscous; second, third and fourth abdominal seg- 

 ments brown-black, almost nude, and narrowly margined at tip wdth 

 white pubescence; the apical margin of the first segment is slightly 

 margined at tip with whitish. Length 7 lines. 



One specimen. (Coll. Dr. J. Gundlach, No. 292.) 



Megachile curta. 



Megacliile curta, Cresson, Proc. Ent. Soc. Phil, iv, p. 178, % 



9 . — Form short, robust; head large, transverse; thorax and abdo- 

 men short, broad; face, cheeks, pleura, and metathorax, with long, 

 more or less dense, white pubescence; clypeus nude, sparsely punctured, 

 apex truncate; vertex and mesothorax with short, black pubescence, 

 the latter closely punctured except on the disk; two spots on anterior 

 margin of mesothorax, a spot in front and another behind tegulae, and 

 a broad band at base of scutellum, nearly confluent with spot behind 

 tegulae, all of short, dense, whitish pubescence; scutellum broadly 

 rounded; wings hyaline, dusky at tips, nervui-es black; legs robust, 

 with thin hoary pubescence, more dense on tarsi; abdomen minutely 

 and closely punctured, basal segment deeply concave in front; all the 

 segments, except the last, with a narrow apical margin of white pubes- 

 cence, that on first ending laterally in a spot; venter with long, dense, 

 white pubescence. Length 5 lines. 



Var, TIBIALIS. — 9- Markings on thorax above yellowish, and all 

 the tibiae reddish. 



Two specimens. (Coll. Dr. J. Gundlach, No. 109.) The variety 

 may be a distinct species. 



Megachile armaticeps, n. sp. 



9 . — Form elongate, subparallel, opaque-black; head large, subquad- 



- rate, densely and deeply punctured, face and cheeks with long, whitish 



pubescence; a long hooked tooth projects from the middle of the face, 



