60 Mr. T. D. A. Cockevell — Descriptions and 



The o-cncral build resembles that of Chah'codoma, but the 

 structure of the apex of the abdomen and of the male antenna 

 is quite different. 



Type, G. Wellmam, sp. n. Also including G. comhusta 

 {MegachUe contbusta, Sm.), G. guineensis {Apis guineensis, 

 Fabr.), G. tricolor {Megnchile tricolor, Friese), and G.stuppea 

 [Megachile stuppea, Vachal). 



Gronoceras Wellmani, sp. n. 



? .—Length 17-19 mm. 



Black, including legs and antennae, the hind margins of tlie 

 abdominal segments ferruginous ; hair of head, thorax, and 

 legs black or brown-black, of abdomen bright fox-red, above 

 and below, but largely black or dark fuscous on tlie first 

 segment above; mandibles long, with two apical teeth, the 

 rest of the cutting-edge toothless ; clypeus normal, strongly 

 punctured, the punctures well separated in the middle ; meso- 

 thorax densely punctured and dull ; tegulae densely punctured, 

 black, with dark ferruginous margin. Wings subhy aline, 

 strongly yellowish. 



Very nearly agreeing with G. comhusta, but the wings are 

 not nearly so dark. 



S .—Length 16-19 mm. 



Like the female, except in the sexual characters mentioned 

 in the generic diagnosis, but the hair of the first abdominal 

 segment is red like that of the others (in comhusta ^ it is 

 black) ; the hair of the face is light yellowish or yellowish 

 white, with black hairs intermixed ; the cheeks below have 

 a fringe of long white hairs ; the anterior tibiffi are more or 

 less pale apically, with a little elevated keel in front ; first 

 basitarsus broad and flat, a sort of pale honey-colour, with a 

 raised ferruginous keel or line along tlie outer anterior edge, 

 short white hair on the outer surface, except basally and more 

 or less anteriorly, where there are fuscous bristles, a fringe 

 of dense short black hair on the anterior interior edge, and 

 a long fringe of ferruginous-tipped hairs behind ; second 

 joint of anterior tarsus dark reddish or yellow, the remaining 

 joints black, except that the tip of tlie last is red ; extreme 

 "apex of middle tibige red ; bases of claws red ; red hind 

 margins of abdominal segments very broad ; venter of abdo- 

 men mainly red ; apex of abdomen with some long dark 

 hairs, and two long, straight, red-tipped spines, mesad of 

 each (and springing from the same base) is a short incon- 

 spicuous spine ; a red spine, easily overlooked, on each side 

 of penultimate segment ; anterior coxal spines long and 



