THEODORfc H. PRISON 315 



Thorax with dorsal cephalic portion covered with pure yellow pile, the 

 yellow pile extending (except for a little black pile on the middle of its posterior 

 border) caudad to the cephalic margin of the scutellmn. Scutelkmi with 

 pure black pile. Disk of the mesonotum bare, impunctate and polished. 

 Mesopleura, except for the yellow pile of dorsum slightly extending down 

 below the level of the bases of the wings, black. Metapleura and propodeum 

 with black pile. 



Abdomen with pile on the first four dorsal segments entirely black; fifth, 

 sixth and seventh segments with anterior portion black and posterior portion 

 (particularly the sixth and seventh segments) a pale brownish-yellow. Venter 

 brownish-black, with light pile particularly noticeable on the posterior margins 

 of the second, third and fourth segments. Genitalia of the same general type 

 as in the other members of the Terrestris group (Radoszkowski) in the United 

 States. 



Legs mostly black, but with a large number of short ferruginous setae on 

 the tarsal segments and a slight amount of long light pile on the trochanters 

 and hind femora. Outer aspect of hind tibia slightly convex, smooth, polished; 

 corbicular fringes black, slightly tinged with ferruginous at distal ends. 



Wings very dark, with a slight violaceous reflection. 



Length, 15 mm.; spread of wings, 35 mm.; width of abdomen at second 

 segment, 7.5 mm. 



Allotype. — male, Oregon. (Collector, C. F. Baker.) Depos- 

 ited in the collection of the United States National Museum. 



The discovery of the male and the worker castes of Br emus 

 franklini Prison confirms my previous supposition, based on the 

 characters presented by the queen, that this species is a member 

 of the Teirestr is Group (Radoszkowski) and most closely related to 

 Bremiis occidentalis Greene. It may readily be separated from 

 the latter species, as pointed out in Entomological News of 1921,2 

 by the marked differences in the color pattern of the thorax, api- 

 cal abdominal segments, whitish-yellow pile of the occiput, vio- 

 laceous wings and darker corbicular fringes. Though Bremus 

 franklini was described from Arizona, I am regarding the male 

 and worker described here as being this species on the Isasis of 

 the close agreement in structural and colorational characters. 

 The absence of specimens of this species in the very large series 

 of lniml)lel)ees I have examined in various collections, indicates 

 that Bremu.-; franklini is one of our rarer species of this witlely 

 distributed genus. 



Bremus kirbyellus (Curtis). 



In 1902, Ashmead in the Proceedings of the Washingtcm Acad- 

 emy of Sciences described two male 1)uml)lebees under the name 



2 Page 48. 



TRANS. AM. ENT. SOC, XLVIII. 



