ANATOMY OF THE BEE 
39 
ot three slender, closely appressed pieces 
forming the sharp piercing organ that pro¬ 
jects from the tip of the abdomen (Fig. 1, 
Stn), and of two soft fingerlike lobes, 
sometimes also visible, all of which arise 
from three pairs of plates belonging to the 
eighth and ninth segments of the abdomen. 
but which are concealed within the seventh 
segment. 
Fig. 5 shows, somewhat diagrammatieal- 
ly, all the parts of the left side. The acute 
stinging shaft swells basally into a large 
bulb ( ShB ) which is connected by a basal 
arm on each side with two lateral plates 
From Bulletin No. IS, “The Anatomy of the Honeybee,” by Snodgras, Dcyt. of Ay., Washington, D. C. 
Fig. 3. — Details of mouth parts of worker. A, tip of glossa, ventral; B, tip of glossa, dorsal; C, piece 
of glossal rod (r) showing ventral groove (I) with parts of wall (q) of glossal channel attached; D, parts of 
proboscis (maxill* and labium) flattened out in ventral view; E. cross-section of glossa, showing its channel 
( Lum ) open below along the groove (A), the internal rod (r) in roof of channel, and its groove (i) ; F. 
distal end of men turn ( Mt ), dorsal, showing opening of salivary duct ( SalDO ) on base of ligula; Q, lateral 
view of left half of proboscis; H, glossa (Gts) with its rod (r) partly torn away, showing retractor muscles 
( 2RMcl ) attached to its base; Od, cardo; Fir, long stiff hairs near tip of glossa; k, ventral groove of glossa; 
l, ventral groove of glossal rod; Lbl, labella ; LlPlp, labial palpus; Lg, ligula; Lr, lorum; Lum, channel in 
glossa; Mt, mentum; Mt, terminal blade of maxilla; MtPIp, maxillary palpus; n, basal process of glossal 
rod; o, ventral plate of ligula, carrying base of glossal rod; p, dorsal plates of mentum; Pgl, paraglossa ; 
Ply. palpiger; q, inner wall of glossal channel; r. rod of glossa; SHMrl, retractor muscle of glossal rod; 
SalPO, opening of salivary duct; Smt, submentum; St, Stipes, 
