414 



r 



Say^s Descriptions of 



the second one, however, is so much elongated as to con- 

 ceal a considerable portion of the next segment. The 

 color is a much deeper yellow than that of fervida. 



2. B, ephippiatus. Black ; pleura and base of the 

 tergum yellowish, 



■ 



Inhab. Mexico. . 



Body black : pleura pale yellow :^ wings dusky, tinged 

 with violaceous : tergum pale yellow towards the base ; 

 this color is gradually narrowed behind and terminates on 

 the third segment, forming somewhat of a semi-oval, with 

 its base to the thorax and confluent with the color of the 

 pleura. 



w 



Length less than half an inch. 



3. B. terndrius. Yellowish ; thorax fasciate ; tergum 

 fulvous in the middle. 



Inhab. Indiana. 



Head black : thorax with dull yellowish hair, and a 

 blackish band on the middle : wings with a slight yellow- 

 ish tinge ; nervurcs fuscous : tergum fulvous on the second 

 and third segments ; first and fourth segments yellowish ; 

 remaining segments black. 



Length $ nearly three fifths of an inch. 



Trigona, Jurine, Latr. 



1. T. bilineata. 



labrum and two lines on the nasus pale. 



O Blackish ; antennae, beneath, 



Mexico 



Body piceous black ; flagellum of the antennae beneath, 

 obsolete narrow anterior orbits, two rather broad lines on 

 the hypostoma, labrum and mandibles somewhat pale : 

 wings hyaline, shghily tinged with fuliginous towards the 

 base ; cubital cellules obsoletely divided Into three by two 



I 1 



