A. D. Peacock 
111 
Stabbers (PL VI, figs. 4 and 5). The stabbers are similar in certain 
respects. Each resembles a long two-pronged fork, the rami being situated 
posteriorly. The rami are about one-fifth the total length of the stabbers 
and their extremities are tendinous. The anterior ends of the stabbers are 
thin, flexible, and serve for piercing. W hen retracted the distal portions are 
slightly curved longitudinally and reach from the blind end of the sac nearly 
to the teeth and lie between the pumping-pharyngeal tube and the sac tube. 
The stabbers are equal in length, being slightly longer than the head (06 mm.), 
but through their curving when retracted they are completely accommodated 
within the head. I cannot follow Harrison in his statement that “the piercing- 
apparatus enters into this tube (the buccal) through the ventral fissure and 
runs forward within it.” Sections and the dorsal aspect of cleared specimens 
do not show this (Text-figs. Ill, IV). 
Fig. VI. Pcdiculus kmnunus. (A) Schematic figure of Pawlowsky's gland as described in 
the text. (B) Cross section of gland and stabber sac. 
The Dorsal Stabber is almost bilaterally symmetrical and formed by the 
close apposition and the anterior fusion of the two inner edges of two similar 
elements. The rami run forward from the blind end of the sac and occupy a 
more median position than the rami of the lower stabber, the span of their 
bifurcation is the narrowest of the three spans of the stabber bifurcations. 
The rami broaden, converge and nearly meet in the middle line. Fibrous 
tissue connects them with one another and with the walls of the sac, thus 
forming a single flat surface anterior to the bifurcation (Text-fig. V, 18-23). 
From this region the stabber tapers distally. The flat plate is short and a 
spindle of tissue traverses and divides it into two elements. These are rod-like 
for a short distance when lateral to the tissue, but, on running forward, they 
broaden inwardly and become grooved with their gouge-like concavities facing 
dorsally. These two gouges fuse along the middle line but the inner edge of 
the right element overlaps that of the left a little, thus giving a slightly 
