A. D. Peacock 
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"with salivary pipe beneath; l.f.gr. lateral floor groove of sac; a.s.rt. anterior retractor muscles 
of sac; s.pr. ventral origin of the protractor muscle of the sac—on outer wall of sac and shown 
by dotted lines (“musculus digastricus” of Pawlowsky); s.f.gr. sac floor groove; P.gl. 
Pawlowsky’s glands with s.pr. the dorsal origin of the protractor muscle of the sac beneath— 
course shown by dotted lines; v.st. (/.) region of fusion of dorsal and ventral elements of the 
ventral stabber; v»st.t < ventral stabber tissue; i.p.s.rt. region of insertion of posterior retractor 
of sac; d.st. dorsal stabber—flattened portion; cLv.st. dorsal element of ventral stabber— v 
grooved; a.v.st.r. muscle associated with the large posterior retractor muscle of sac and also 
with ramus of lower element of ventral stabber; v.st.r. retractor muscle of dorsal element of 
ventral stabber; v.v.st. ramus of ventral element of ventral stabber; p.v.st.r. muscle associated 
with retractor muscle of dorsal stabber also with posterior extremity of ramus of ventral 
element of ventral stabber; d.v.st.r. ramus of dorsal element of ventral stabber; d.st.rt. 
retractor muscle of dorsal stabber; s.pr. posterior portion of retractor muscle of sac (on the 
outside of sac); sal.p. posterior part of salivary pipe; d.st.r. ramus of dorsal stabber; p.s.ri. pos¬ 
terior retractor muscle of sac—note its anterior insertion i.p.s.rt. 
General, hr. brain; nervous tissue all white; f.b. fat body; ch.l. chitinogenous layer 
b.m. basement membrane; the following muscles cannot be shown on the diagram—the 
retractor and ventral protractor of the buccal funnel; lateral dilator of pharynx. 
Figs. 2-6. The isolated mouth-parts as described by the lettering accompanying the figures. 
Figs. 2, 5, 6, drawn slightly in perspective. In Fig. 2 the rami of the stabbers and salivary 
pipe are slightly displaced. 
