HENRY J. FRANKLIN. 365 



? Bombus praticoLa Cresson, Proc. Ent. Soc. Phila., II, 1863, n. 36. 

 ? " " Bethune (Reprint, W. Kirby's Faun. Bor.-Amer.). 



Can. Ent., X, 1878, p. 118. 

 " pleuralis Cresson, Trans. Amer. Ent. Soc, VII, 1879, p, 

 230. (Catal.). 

 Cresson, Syn. Hym. No. Amer., 1887, p. 308. 

 Dalla Torre, Cat. Hym., X, 1896, p. 540. 

 ? " praticolus Dalla Torre, Cat. Hym., X, 1896, p. 541. 



" pleuralis Ashmead, Proc. Wash. Ac. Sci., IV, 1902, p. 127. 

 " juxtus Ashmead, Proc. Wash. Ac. Sci., IV, 1902, p. 217. 

 " pleuralis Ashmead, Hym. of Alaska, 1904, p. 133. 

 " juxtus Ashmead, Hym. of Alaska, 1904, p. 133. 



pleuralis Cockerell, Can. Ent., XLI, Jan., 1909, p. 37. 

 " " H. Friese, Ann. du Mus. Zool. de I'Acad. Imp. 



des Sci. de St. Petersb., 1904, Tome IX, no. 4. 



Pile rather long and fnoderately coarse in texture. Face of females 

 always fnostly dark. Dorsum of thorax covered with yellow pile, ex- 

 cept for a well defined black interalar band; mesopleura mostly yellow, 

 but their lowest parts often dark. Abdomen with the two basal dorsal 

 segm,euts ^nostly covered with yellow pile, but the qtieens with the middle 

 portions of these two segments fuore or less dark ; the rem-aining dorsal 

 segtnents usually mostly or entirely black, but the third and fourth som.e- 

 times more or less ferruginous. Wings rather light. Corbicular fringes 

 of females dark Malar space rather long. 



Queen. Head. — Somewhat elongate trapeziform. Face mostly dark, 

 but with more or less yellow pile between the bases of the antennae ; oc- 

 ciput sometimes entirely dark, but usually with black and yellow hair 

 mixed, the yellow often being predominant ; cheeks dark. Labrum 

 with tubercle-like areas having their margins rounded and summits 

 flat or somewhat concaved ; shelf-like projection moderately broad and 

 prominent. Malar space somewhat longer than its width at the apex, 

 fully one-fourth as long as the eye. Clypeus rather delicately and 

 sparsely punctate over the disc, the corners coarsely punctate. Third 

 antennal segment nearly as long as the fourth and fifth taken together, 

 the fifth longer than the fourth. 



Thorax. — Dorsum, except for a broad and fairly well defined black 

 interalar band, entirely covered with yellow pile; center of the disc 

 naked, smooth and shining ; mesopleura mostly covered with yellow 

 pile, but the yellow only occasionally reaching the bases of the legs, 

 the lowest portions usually being dark ; metapleura mostly dark, but 

 with some light pile on their upper portions ; sides of median seg- 

 ment usually entirely dark, sometimes with a slight admixture of yel- 

 low hairs. 



Abdomen. — Dorsum : segment one dark in the middle and yellow on 

 the extreme sides ; segment two with a black median triangle, its base 



TRANS. AM. ENT. SOC, XXXVIII. 



