HENRY J. FRANKLIN, 193 



PLATE III. 



Fig. "i.—Bombus vagans Smith. Fore wing of queen with the cells 

 named according to the nomenclature of Comstock and 

 Needham. x5. 



" 4. — Bomhiis affinis Cresson. Hind wing of queen with the cells 

 named according to the nomenclature of Comstock and 

 Needham. x5. 



" 5. — Bornbus vagans. fore wing of queen with the cells named 

 according to the usual (Cresson's and others) nomencla- 

 ture. x5. 



" 6. — Bombus affinis, hind wing of queen with the cells named 

 according to the usual (Cresson's and others) nomencla- 

 ture. x5. 



PLATE IV. 



Fig. 7. — Bombus vagans, fore wing of queen with the veins named 

 according to the nomenclature of Comstock and Need- 

 ham. 5x. 



" 8. — Bombus affinis, hind wing of queen with the veins named 

 according to the nomenclature of Comstock and Need- 

 ham. x5. 



" 9. — Bombus vagans, fore wing of queen with the veins named 

 according to the usual (Cresson's) nomenclature. 



" 10. — Bombus affinis, hind wing of queen with veins named ac- 

 cording to the usual nomenclature. 



PLATE V. 



Fig. 11. — Bombus {Bombias) fratertms, ventral aspect of outer spatha 



of male. xl3. 

 " 12.— Bombus perplexus Cresson. Inner aspect of end of right 



posterior tibia of worker. x25. 

 " 13. — Bombus vagans, bulla in second transverse-cubital vein of 



fore wing. x60. 

 " 14. — Bombus {Bombias) 7ievade?isis Cresson, part of veination of 



fore wing of worker. xl3. 

 " 15. — Bombus {Bombias) auricomus, part of veination of hind wing 



of queen. xl3. 

 " l&.—Psithyrusi}iterrupius{GreQn&). Sting, with connected parts. 



xl3. 

 " 17. — Bombus pennsylvanicus, outline of some of the middle seg- 

 ments of flagellum of antenna of male. xl3. 

 " 18. — Bombus pennsylva7ticus, hair from abdomen of queen. x60. 

 " \^.— Bombus mixtus Cresson. Antenna of male. xl3. 

 " 20. — Bombtis vagans. antennal comb on fore leg. x30. 



TRANS. AM. ENT. SOC, XXXIX. (25) 



