HENRY J. FRANKLIN. 429 



Bombus (Bombias) mornionoruni Franklin. 

 Bombus mormonorum Franklin, Trans. Amer. Ent. Soc, XXXVII, 

 1911, p. 161, 9 f^ c?. 



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 con- 

 tents 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 specimens de- 

 posited in the collection of the Museum of Brooklyn Instit- 

 tute, except a queen and worker in the collection of the Massa- 

 chusetts Agricultural College and a queen and worker in the 

 collection of the United States National Museum. 



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

 with no trace of a black interalar band. Dorsum of abdometi with seg- 

 ment one yellow ; segment two entirely yellow or with the apical margin 

 black or the basal middle brown-ferruginous ; the remaining segtnents 

 mostly black. Corbicular fringes of females dark. Wings of females 

 rather deep brown. Malar space short. 



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

 black about the bases of the antennae ; occiput with considerable yel- 

 low pile, but usually with more or less black hair admixed ; cheeks 

 dark. Labrum with tubercle-like areas having their hind (proximal) 

 margins rather sharply rounded and summits considerably concaved, 

 the region between them, and above the shelf-like projection, deeply 

 excavated ; the shelf-like projection rather wide and prominent. Malar 

 space distinctly shorter than its width at the apex, less than one-sixth 

 as long as the eye. Clypeus for the most part very delicately punctate 

 over the disc. Each lateral ocellus about one-half as far from the 

 supra-orbital line as from the nearest eye. Flagellum of antenna 

 about one and four-fifths times as long as the scape ; third antennal 

 segment longer than the fifth, the fifth longer than the fourth. 



Thorax. — Dorsum clothed with yellow pile ; mesopleura covered 

 with yellow pile to the bases of the legs ; metapleura mostly clothed 

 with yellow ; sides of the median segment sometimes entirely dark and 

 sometimes clothed with light yellow pile, but usually with a mixture 

 of dark and light hairs. 



Abdomen. — Dorsum : segment one yellow ; segment two covered 

 with yellow pile, except for black on its apical margin ; segment three 

 black, but sometimes with slight touches of yellow pile on the extreme 



TRANS. AM. BNT. SOC, XXXVIII. 



