200 AMERICAN HYMENOPTERA. 



PLATE XXI. 



Fig. 179. — Bonibus dahlbomii Guerin, male. Ventral aspect of left 



side of genitalia. x80. 

 " ISQ.—Bombus funebris Smith, male. Ventral aspect of left side 



of genitalia. x80. 

 " 181. — Bombjis robustus Smith, male. Ventral aspect of right side 



of genitalia. x80. 

 " 182. — Boinbus brasiliensis Lepeletier, male. Ventral aspect of 



left side of genitalia. xSO. 

 " 183. — Bonibus moiitezumae Cockerell, male. Ventral aspect of 



left side of genitalia. x80. 

 " 184. — Bonibus incarimi n. sp., male. Dorsal aspect of right side 



of genitalia. x80. 

 " 185. — Boinbus coccineus Friese, male. Ventral aspect of left 



clasper. x80. 

 " 186. — Bombus rubicundus Smith, male. Ventral aspect of right 



side of genitalia. x80. 

 " 187. — Bombus incaruni, male. Ventral aspect of left side of male 



genitalia. x80. 

 " 188. — Bombus brachycephaliis Handlirsch, male. Ventral aspect 



of left side of genitalia. x80. 

 " \%^.— Bombus carolhius (Linnaeus), male. Ventral aspect of left 



side of genitalia. x80. 



PLATE XXII. 



Fig. l^Q.— Bombus ephippiatus Say, male. Ventral aspect of left side 

 of genitalia. x80. 



" \^\.— Bombus coccineus Friese, male. Outline drawing of dor- 

 sal aspect of left clasper. x80. 



" \Q2.— Bombus coccineus, male. Outline drawing of dorsal aspect 

 of right sagitta and uncus. x80. 



" 193. — Bombus niontezuniae Cockerell, male. Outline drawing of 

 dorsal aspect of right clasper. x80. 



" 194. — Bonibus pulcher Cresson, male. Outline drawing of dor- 

 sal aspect of left clasper. x80. 



" \%h.— Bombus rubicundus ^raWyx, ra.Q\Q. Outline of dorsal aspect 

 of left side of genitalia. 



" V^%,— Bombus dolichocephalus Handlirsch, male. Ventral aspect 

 of left side of genitalia. xSO. 



" 197. — Bombus robustus Smith, male. Outline of dorsal aspect of 

 left side of genitalia. x80. 



