AMERICAN HYMENOPTERA. 233 



and compressed, and it becomes distinctly narrowed at the apex; the scape on 

 the lower side bears some long pale fulvous hairs. Head closely punctured ; the 

 front, face, clypeus and outer orbits are thickly covered with long pale fulvous 

 hair. Mandibles shining, sparsely punctured in the middle; the apical tooth is 

 long and sharp-pointed ; the two subapical are short, bluntly rounded and separ- 

 ated by a curved rounded incision. The thorax is closely and uniformly punc- 

 tured and covered thickly with long pale fulvous hair; there is a smooth shin- 

 ing keel in the centre of the basal half of the mesouotum. The hair on the four 

 anterior coxae, trochanters and femora are long, thick and pale fulvous; on the 

 posterior it is shorter and black ; there is a short, bluntly rounded projection on 

 the under side of the front femora at the apex ; on the innerside and on the 

 opposite is a similar, smaller projection ; the hair on the underside of the front 

 tarsi is bright golden. The hinder calcaria are large, stout and roundly curved. 

 The apex of the wings has a faint violaceous tinge ; the stigma and nervures are 

 black ; the basal abscissa of the radius is three-fourths of the length of the second. 



Hab.— Antisanella, 11,000 feet. 



JVIegachile gwachalensis sp. uov. 



Black ; the head, thorax and base of abdomen thickly covered with longish 

 white hair; the hair on the 3rd and following segments of the abdomen and the 

 scopa deep black ; the wings clear hyaline, the nervures and stigma black ; the 

 hair on the legs deep black. 9- Length 13 mm. 



Antennae black; the scape thickly covered with short black hair, the flagelhrm 

 obscure brownish beneath and covered with a white pile. Head closely and uni- 

 formly punctured ; the face and clypeus more strongly than the upper parts; the 

 front, sides of the face and clypeus and the outer orbits thickly covered with 

 longish white hair. The apex of the clypeus is depressed ; its middle is not quite 

 transverse; the sides obliquely narrowed. The basal half of the mandibles on 

 the outerside is closely but not strongly punctured and thickly covered with pah- 

 depressed pubescence; the inner basal half bears large, scattered punctures; the 

 apex is broadly, roundly incised, forming two rounded teeth, the inner of which 

 is broader than the outer ; separated from it by a wide, rounded, curve is a shorter, 

 less prominent one. The thorax is closely and distinctly punctured ; the hair on 

 the lower part of the pleura? and on the breast is dark fuscous-black. The hair 

 on the legs is long, dense and black ; on the underside of the front tarsi it is 

 brownish. The basal two dorsal segments of the abdomen are sparsely covered 

 with longish white hair; on the other segments it is denser, shorter and deep 

 black; the last segment above is more closely and distinctly punctured than the 

 others; below it has the apical half shining. The wings are clear hyaline; the 

 basal abscissa of the radius is fully two-thirds of the length of the second. 



Hab. — Hac. Guachala, 9217 feet. 



Authophora guachala? sp. nov. 



% . — Black ; the scape of the antennae broadly beneath, a narrow line on the 

 lower edge of the front, the lower third of the clypeus, the labium and a narrow 

 line on the lower half of the inner orbits and a mark on the base of the mandi- 

 bles, cream-yellow; the abdominal segments have pale yellow bands on their 

 apices; the head and thorax are thickly covered with pale fulvous hair; the 



TRANS. AM. ENT. SOC, XXIX. (30) AUGUST, 1903. 



