228 BRITISH BEES. 



the length of the tongue, the basal joint longer than 

 the two following, the remainder gradually decreasing 

 in length, all conterminous; labium half the length of 

 the cibarial apparatus, broad; maxillae slender, sub- 

 hastate, as long as the tongue; maxillary palpi six- 

 jointed, the basal joint robust, subclavate, as is the 

 second joint, but more slender, the remainder filiform, 

 gradually declining in length. THORAX oval; prothorax 

 inconspicuous ; mesothorax with a deep central groove ; 

 bosses protuberant ; scutellum and post-scutellum lunu- 

 late ; metathorax gibbous ; wings with the marginal 

 cell slightly appendiculated, two submarginal cells and a 

 third commenced, the second receiving both the recur- 

 rent nervures, the first close to its commencement and 

 the second beyond its centre ; the legs densely pilose, 

 the posterior pair having their coxce and trochanters 

 beneath, their femora in front, above, the tibia and 

 plant all round, covered with long hair; claws bifid. 

 ABDOMEN ovate, the base subtruncate, the basal seg- 

 ment having a deep central impression at its base, the 

 fifth segment fringed with short dense hair, the terminal 

 segment with a triangular plate carinated in the centre, 

 and fimbriated laterally, and all very slightly con- 

 stricted. 



The MALE scarcely differs, except in having the head 

 rather more globose and more pubescent ; and the legs, 

 although still hairy, much less so than in the female. 



NATIVE SPECIES. 



1. Banksiana, Kirby, $ ? . 4-5J lines. 



ursinus, Curtis, iii. 101. (Plate VI. fig. 1 <? ? .) 



2. calcaratus, Scopoli, ? . 3-4 lines. 

 ursinus, Kirby. 



