40 
THE VOYAGE OF H.M.S. CH ALLEN GEE. 
either side of the terminal point are twelve or thirteen denticles, — only ten or eleven 
in the most anterior teeth. The lateral teeth (figs. 7, h,c, 8) consist as usual of a long 
basal portion, and a straight or slightly bent smooth-edged hook, which terminates 
in a fine point. 1 The number of lateral plates on the tongue is about seventeen or 
eighteen on each side ; farther back within the sheath there are as many as nineteen. 
The innermost lateral plate (fig. 7, b,h) is very minute, the hook measuring scarcely 
•007 mm,; the next one has a far more strongly developed “hook,” some '015 mm. high, 
and the eight or nine that follow gradually increase in size ; the next four or five are of 
about the same length as the last ; the one that follows these has a rather shorter “ hook,” 
and finally, the two outermost (fig. 8, a) are quite short, the length of the hook 
not exceeding ’025 — ’035 and '0015 mm. 
The yellowish salivary glands are flat and not very compact, meeting each other in 
the middle line ; they are situated at the anterior edge, and at the lower surface of the 
first stomach. The ducts were quite as usual. 
The oesophagus (PL VIII. fig. 9, a) is rather short (only 5 ‘5 mm. long) and wide, passing 
behind into the thin walled first stomach (fig. 9, b), which is about double its breadth, and 
round in shape ; its length is about 4 mm. ; on the upper surface of this open the two 
lobes of the liver, one on each side, that on the left being somewhat larger than the right 
hand one. Not far from the aperture of the left liver, just at the junction of the 
first and second stomachs, is the opening of the somewhat wider main bile duct (fig. 9, c). 
The interior of the first stomach has a number of longitudinal folds, which become higher 
behind, and partly terminate at the opening of the bile ducts ; the openings of the two 
livers were guarded by a valve-like fold. The first stomach is inclined at a somewhat 
oblique angle to the second stomach (fig. 9,f), which is spindle-shaped, and 8 mm. in 
length by 3 ’5 mm. in width ; it is greyish in colour, and shows a number of fine 
longitudinal lines. This stomach has a largish number (perhaps eighty) of folds which 
extend from one aperture to the other; they are situated at short irregular intervals from 
each other, and bear a number of black prickles (fig. 10), either standing perpendicularly 
or directed backwards ; these prickles attain a height of ‘8 mm., and are of a dirty brown 
or blackish -brown colour; in form they are straight and cylindrical, sometimes rounded 
off or swollen at the upper extremity; their structure (fig. 11) is fibrous, as in other species 
of the genus Bornella, 2 and fissile ; their interior showed, at least in the clearer 
prickles, a cellular structure (fig. 11). The first portion of the gut (fig. 9, g) is about 
as long and broad as the second stomach, passing by a narrow opening (fig. 9, h) into the 
rectum (fig. 9, i), the posterior portion of which is somewhat narrow, and opens on 
the anal papilla, behind the second section of the hermaphrodite gland ; the length of 
1 Among the worn-out teeth were several that displayed a peculiar brownish colour upon the end of the hook 
(PL VII. fig. 16). 
2 Bergh, loc. cit., p. 298. 
