154 Mr. F. Smith on some new Exotic Hymenoptera. 



fulvous hairs ; the wings subhyaline ; the pubescence on the legs black, 

 that on the basal joint of the posterior tarsi within ferruginous, the 

 claw-joint of the tarsi obscurely ferruginous. Abdomen: the third 

 and fourth segments clothed with yellow pubescence, the fifth with 

 black, and fringed on its apical margin with yellow hairs, the apical 

 segment has also a thin clothing of hair of the same colour. 



Worker. Length 5| lines. The pubescence similarly disposed to 

 that of the female, but paler, that on the apical segments white. 

 Hub. Oajaca (Mexico). In the Collection of the British Museum, 



5. Bombus diligens. 



B. hirsutus, ater ; alis nigricantibus, ano rubro. 



Female. Length 10 lines. Black, and clothed with black pubes- 

 cence; wings dark brown, shining. The pubescence on the thorax 

 short and dense, except on the disk above, which is smooth and 

 shining; the three apical segments clothed with ferruginous pubes- 

 cence, the apical segment smooth and shining in the middle. 



Hub. Oajaca (Mexico). In the Collection of the British Museum. 



This species closely resembles Apathus rupestris, and Apis arcnaria 

 of Panzer ; but it is a true Bombus, and distinct from every species 

 with which I am acquainted. 



6. Bombus venustus. 



B. hirsutus, ater; thorace antice, scutello, abdominisque basi et fascia 

 media pallide flavo-albis ; alis nigricantibus. 



Female. Length 10 lines. Black, pubescent ; the head and a space 

 between the wings very smooth and shining, with scattered black 

 hairs, which are most dense at the insertion of the antennas. The 

 scutellum and the thorax in front and beneath the wings clothed with 

 pale yellow pubescence ; the abdomen at the base, and the third seg- 

 ment, with pale yellow pubescence ; the wings dark blackish-brown. 



Male. Length G lines. Coloured like the female, with the addition 

 of a little pale pubescence on the clypeus ; the antennas as long as the 

 thorax. 

 Hab. Constantia (Brazil). In the Collection of the British Museum. 



Genus Apathus, Newm. 



1. Apathus intrudens. 



A. niger, pubescens ; vertice, thorace supra pubc pallide flava ; alis fusco- 

 hyalinis. 



Female. Black : a tuft on the vertex and another in front of the 

 anterior stemma pale yellow; the thorax clothed above with pale 

 yellow pubescence, which is continued down the sides in front of the 



