270 G. H. BISHOP 
Fig. 1 Dorsal (A) and lateral (B) views of female fenital tract of bee, with 
part of male organ (C) drawn to the same seale. a, ventral floor of genito-anal 
vestibule; b, bursa copulatrix; c, bursal pouch; d, aperture of pouch; e, vaginal 
orifice; f, medial ridge of ventral floor of bursa; g, posterior region of vagina; 
h, tongue-like organ situated in medial region of vagina; 7, duct to spermatheca, 
or ‘sperm pump;’ j7, spermatheca;/, its opening from the sperm duct; /, glandular 
continuation of sperm duct; m, posterior region of vagina; n, fossa in floor of 
same; 0, oviduct; p, aperture from oviduct to vagina; q, ganglion straddling end 
of vagina; r, base of sting; s, poison sac of sting; t, rectum. All drawings free- 
hand, but drawn proportional to measurements of camera-lucida projections of 
cross-sections, longitudinal sections, and whole mounts of the organs represented. 
