280 Mr. T. D. A. Cockerell— Descriptions and 



densely and minutely punctured, the b. n. falls short of t.-m. 

 (in erythropyga they meet), the sixth abdominal segment is 

 not distinctly concave above in lateral view, as it is in 

 erythropyga, and the ornamentation of the abdomen differs in 

 detail. It is also very clo3e to M. beutenmulleri, Ckll., but 

 may be separated by the ornamentation of the abdomen. 



Hah. Mackay, Queensland ; female (type), Nov. 1899 ; 

 male, Jan. 1899 (Turner, 407). British Museum. 



The sexes were associated by the collector. 



Megachile ustulatiformis, sp. n. 



c£. — Length about 13 mm. ; width of abdomen 5. 



Much more robust than M. mystacea ; black ; face and 

 front densely covered with silver-white hair having a slight 

 ereamy tint ; vertex with thin white hair; cheeks with mostly 

 black hair, but light below ; head broad ; eyes large, dark 

 reddish ; mandibles broad, with three strong teeth, their 

 broad outer surface with many minute punctures and some 

 larger ones ; antennae black ; vertex densely punctured, the 

 punctures much larger at sides posteriorly ; thorax with the 

 hair entirely purplish black ; mesothorax and scutellum with 

 very distinct and strong punctures, the shining surface be- 

 tween very evident on disc of mesothorax ; area of metathorax 

 with a median raised line; tegulae rufo-piceous, finely punc- 

 tured. Wings strongly fuscous ; second s.m. shorter than in 

 M. ustulata. Legs black, with black and pale hair ; anterior 

 coxae with long spines, but no bright hair-patches ; anterior 

 femora keeled below, the keel (except at base) and inner 

 surface ferruginous ; anterior tibiae robust, trigonal, with the 

 inner and lower sides, and apical margin of outer side 

 narrowly, ferruginous; anterior tarsi ferruginous, moderately 

 flattened, with an even fringe of pure white hair behind, and 

 curled dark hairs on first joint in front, the anterior apices of 

 joints produced; middle tarsi with fulvous hair on inner side, 

 black on outer, and long white hairs behind ; hind tibiae 

 rugose, shining, with short black hair on outer side and 

 white tomentum on inner, the edge of the latter appearing as 

 a narrow white band along the margin, when the tibiae are 

 seen from the side ; hind tarsi with fulvous hair on inner 

 side, and long creamy-white hairs in front, the basitarsus 

 only moderately broadened ; claws bidentate ; spurs ferrugi- 

 nous ; abdomen short and broad, covered above with rut'o- 

 fulvous hair (not so bright as in mystacea), the first segment 

 with dark hair only at sides of basin ; an appearance of 

 darker apical bands on first three segments ; apex (edge of 



