356 AMERICAN HYMENOPTERA. 



Boiiibus (Boiiibus) cockerelli nom. nov. 

 Bombus primellce Cockerell and Porter, Ann. and Magaz. Nat. Hist., 

 Ser. 7, IV, 1899, p. 391 (pars.). 

 Viereck, Trans. Amer. Ent. Soc, XXIX, 1903, p. 

 45 (pars.). 

 consimilis Viereck, Trans. Amer. Ent. Soc, XXIX, 1903, p. 



44. 

 prunellcE Cockerell, Bull. So. Cal. Acad. Sci., Ill, June, 1904, 

 p. 89 (pars.). 

 Cockerell, Trans. Amer. Ent. Soc, XXXII, July, 

 1906, p. 238 (pars.). 

 consimilis Cockerell, Trans. Amer. Ent. Soc, XXXII, Nov., 



1906, p. 313. 

 prunellce Cockerell, Trans. Amer. Ent. Soc, XXXII, Nov., 

 1906, p. 313 (pars.). 



Types. — Described from two queens (cotypes) and four 

 workers (cotypes). One queen and two workers are de- 

 posited in each of the two following collections : Massa- 

 chusetts Agricultural College and United States National 

 Museum. 



Pile of medium length and coarse. Face with some yellow hair ; 

 occiput with a triangular patch of yellow pile ; thorax with yellow 

 pile, except for an indefinite black interalar band ; abdomen yellow at 

 the base, black in the middle and yellow toward the apex ; legs dark, 

 but with considerable yellow pile on their basal portions ; wi^igs not 

 very dark. Malar space long. 



Queen. //i?ac^.— Elongate. Face with considerable yellow pile about 

 the bases of the antennae, with black hairs admixed ; the triangular 

 patch of yellow pile on the occiput with at most only a very slight 

 admixture of dark hairs ; cheeks dark. Labrum with tubercle-like 

 areas well separated, their margins rounded and summits flat or 

 slightly concaved ; shelf -like projection narrow and not very promi- 

 nent. Malar space longer than its width at apex, about one-fourth 

 as long as the eye. Clypeus sparsely and delicately punctate over the 

 disc, smooth and shining. Third antennal segment longer than the 

 fifth, the fifth longer than the fourth. 



Thorax. — Front part of dorsum and scutellum covered with yellow 

 pile, the middle portion with black and yellow pile mixed, forming a 

 poorly defined black interalar band ; center of disc naked, smooth and 

 shining. Mesopleura, to the bases of the legs, metapleura and sides of 

 median segment bearing yellow pile. 



Abdomen. — Dorsum : segments one and two covered with yellow 

 pile ; segments three and four black, with yellow on the extreme side 

 margins ; segment five entirely covered with yellow pile ; segment six 



