784 BOSTON JOURNAL 



Length over two-fifths to nearly half an inch. 



V Frontal hair shorter and less conspicuoas ; anterior feet 

 simple ; venter with dense yellow hair. 



Length over half an inch. [409] 



It is smaller, much more slender and much less hairy than 

 either huimauus, or polUcaris nob., and has a somewhat different 

 liabit. 



ANTIIOPIIORA Latr. 



1. A. ABRUPTA. — % Black; thorax with cinereous hair; nasus 

 and labrum whitish. 



Inhabil.s Indiana. 



Body robu.st : antennae on the anterior side of the basal joint, 

 whitish : nasus, and each side of it to the eye yellowish, a little 

 tinged with fulvou.s in the middle : labrum pale yellowish, hairy : 

 mandibles having a whitish spot near their outer base : thorax, 

 pleura and pectus, clothed with whitish cinereous hair : wings 

 hyaline ; nervurcs 'fuscous ; stigma not at all dilated : pleura 

 with an obli(jue line of black hairs passing downward and back- 

 ward from the posterior wings : tergum with much shorter and 

 less dense hair than that of the thorax, and black ; that of the 

 basal segment a little longer, and near the metathorax partaking 

 of the color of the hair of that part : feet black ; the longer hairs 

 of the anterior pair are whitish. 



Length over half an inch. 



It is less robust than A. pilqyes F. and is equally well clothed 

 with hair on the anterior part of the body, but the transition of 

 color between the hair of the thorax and that of the tergum is 

 much more abrupt. It has much the appearance of a small hum- 

 ble-bee and also resembles Andrcna thoracica F. 



2. A. FRONTATA. — Thorax with yellowish hair; hypostoma 

 nnd basal joint of the antennae beneath, and spot at base and 

 near the tip of the mandibles, yellow. 



Inhabits Louisiana. [410] 



S Bod}' black : hypostoma yellow and with yellow hair : an- 

 tennae with the inferior longitudinal half of the basal joint yel- 

 low, and with dense yellow hair : nasus yellow, with yellow hair : 

 labrum black, covered by the hair of the nasus : mandibles with 



[Vol. I. 



I 



