H. J. FRANKLIN. 161 



men as a whole usually with but little light pile and sometimes entirely 

 dark beyond the second segment ; corbicular fringes usually entirely 

 dark ; trochanters sometimes with very little light pile ; venter some- 

 times with very little light hair on the apical margins of any of the 

 segments. 



Male. — Unknown. 



Dimensions. — Length: queen, 12 mm. ; worker, 9 mm. to 13 mm. 

 Spread of wings: queen, 30 mm. ; worker, 21 mm. to 25 mm. Width 

 of abdomen at second segment : queen, 8 mm. ; worker, 5 min. to 6 

 mm. 



Habitat. — My records for this species are only those of the 

 type specimens, as follows: California (one queen without 

 locality label, three workers from Sisson and one worker 

 from Santa Cruz Mts.) and Washington (two workers from 

 Keyport). It appears to be a rare species, confined to the 

 Pacific coast region of the western United States. What are 

 its northern, eastern and southern limits ? 



This form is most closely related to B. sitkensis Nyl. of 

 which it may be only a subspecies, though all the specimens 

 before me have noticeably shorter pile than has that species. 



Bombiis (Bonibias) inoi*monoriim new species. 

 Types. — Described from four queens (cotypes), many 

 workers (all cotypes) and two males (cotypes). These 

 specimens were all taken in Utah as follows : two queens, 

 nineteen workers and two males from Beaver Valley (the 

 contents of a nest); one other queen and one other worker 

 also from Beaver Valley ; one queen and one worker from 

 Beaver Creek Hills ; one worker from Beaver Canyon and 

 two from South Creek, Beaver County. All the type speci- 

 mens deposited in the collection of the Museum of Brooklyn 

 Institute except a queen and worker in the collection of the 

 Massachusetts Agricultural College and a queen and worker 

 in the collection of the United States National Museum. 



Pile short and of medium textiire. Thorax clothed with yellow pile, 

 with no trace of a black inter alar band. Dorsum of abdomen with seg- 

 tnent one yellow ; segmetit two e^itirely yellow or with the apical margin 

 black or the basal middle taiuny ; the remaining segments mostly black. 

 Corbicular fringes of fetnales dark. Wings of females rather deep 

 brown. Malar space short. 



Queen. — Head. — Face with considerable yellow pile mixed with the 



TRANS. AM. ENT. SOC, XXXVII. (21) 



