1 76 [January 



Collection. — Ent. Soc. Philad. % ; Dr. J. Gundlach 9 . Two speci- 

 mens. 



This species does not answer exactly to the characters of the genus 

 in which I have placed it, but I am unable, at present, to refer it to 

 another which seems more allied. It bears a very close resemblance to 

 Augochlora parva described above (p. 171), but is separated at once 

 by the anterior wings having only two submarginal cells. The neura- 

 tion of the wings is very similar to that of Panurgus. 



Genus MEGACHILE, Latr. 

 Megachile atriceps, n. sp. 



Black: thorax and base of abdomen clothed with ochraceous pubescence, rest 

 of abdomen with bright ferruginous pubescence; wings bright yellow, the apical 

 margin fuliginous. 



Female. — Large, elongate ; head large, subglobose, not wider than 

 the thorax, black, clothed with short, dense, blackish-fuscous pube- 

 scence, that on the cheeks longer and whitish, very closely and minutely 

 punctured; clypeus very transverse, rugose, the apical margin truncate; 

 mandibles large, dull black, subobsoletely striated and interspersed with 

 scattered, ill-defined punctures, and clothed with a very short, thin, pale 

 ochraceous pubescence; antennae as long as the width of the head, 

 black, the flagellum beneath brownish. Thorax black, very closely and 

 minutely punctured, rather densely clothed with ochraceous pubescence, 

 paler beneath, and much longer and more dense on the metathorax ; 

 tegulge rufo-testaceous. Wings bright gamboge-yellow, the apical mar- 

 gins broadly fuliginous ; nervures fulvo-ferruginous. Legs black, clothed 

 with pale pubescence, the tarsi within with ferruginous pubescence. 

 Abdomen oblong, not broader than the thorax, the sides subparallel. 

 black, densely clothed with short, bright ferruginous pubescence, longer 

 and more dense on the apical margins of the segments, and deeper in 

 color towards the apex; sides of the basal segment clothed with rather 

 long, dense, ochraceous pubescence ; ventral scopa dense and bright 

 ferruginous, ochraceous at base. Length 9 lines; expanse of wings 14 

 lines. 



Collection. — Ent. Soc. Philad. Two specimens. 



This fiue. large species is readily recognized by the elongate, parallel 

 form, the black head, deep yellow wings, and bright ferruginous pube- 

 scence of the abdomen. Prof. Poey writes me that "it makes its nest 

 in dry wood, which it pierces like the Xylocopse." 



