284 Mr. T. D. A. Cockerell on new Bees 



{c) From G. alhitarsif ^ (from Sta. ¥€) in the darkened 

 wings, the shorter marginal cell, but not in the first recurrent 

 nervure, which in the male alhitarsis examined agrees with 

 hidentis and does not join the transverso-cubital nervure. 

 The lateral face- marks in alhitarsis are blunt above and 

 produced below, thus different from hidentis. 



[d) From C. ornatipes $ in the somewhat smaller size, 

 the very dark stigmata. The scopa on hind legs is exactly 

 as in ornatipes. 



(«) From C. ornatipes ^ in the wholly dark scape, the 

 labrum with only a light spot, the tibise not yellow except 

 the anterior ones in front. 



(/) From C. Rudbeckice $ in the shorter second submar- 

 ginal cell, which receives the first recurrent nervure nearer 

 its base (one third of its length from its base in Rudbeckice), 

 and in the margins of the abdominal segments not being dark 

 testaceous. 



{g) From C. Rudbeckice (^ in the absence of the supra- 

 clypeal mark, the lateral face-marks narrower above and not 

 pointed below. 



{h) From C. perlcEvis by its much smaller size, &c. 



(2) MegacTiile ch'ysophila, sp. n. 



?. Length about 11 millim. Short and broad; black 

 throughout, including the legs, mandibles, and antennse. 

 Head rather broad ; face and front with rather dense greyish- 

 white hairs, some sparse, darker, yellowish and blackish 

 hairs converging over clypeus, which is strongly and closely 

 punctured. Supraclypeal area hairless, strongly punctured, 

 except a small, smooth, shining central patch. Cheeks with 

 white hairs. Vertex with rather sparse black hairs. Man- 

 dibles bidentate, with a broad inner lamina representing the 

 third tooth ; only one groove on outer surface. Thorax 

 very closely punctured, with short sparse inconspicuous 

 pubescence, black and yellowish white mixed, on dorsum, 

 denser and whiter on anterior margin of mesothorax ; a con- 

 spicuous line of dense yellowish-white pubescence running 

 along suture between mesothorax and scutellum. Pleura and 

 sides of metathorax with white pubescence, dense, so as to 

 form a conspicuous patch beneath the tegulte. Tegulte 

 piceous. "VYings smoky hyaline, greyish, not yellowish; 

 nervures black. Legs with short, thin, whitish pubescence ; 

 basal joints of tarsi with dark rufous pubescence on inner 

 side. Claws not cleft. Abdomen short, subcordiform, rather 

 shiny, closely punctured ; hind margins of dorsal segments 



