Hurtron.—On some Pulmonate Mollusca. 157 
the teeth point forward. There is no jaw. The radula has 44 transverse 
rows of teeth, which form an angle of about 105°, salient anteriorly. Pl. 
IV., fig. 0.) The teeth are 29-1-29. The central tooth has five or six 
denticles on each side of the median cusp, and on the right side the margin 
is finely but variably denticulated; the median cusp bears a single blunt 
cutting point. On each side there is a single lateral tooth, which, however, 
is often divided into two; it is very variable in shape, but more or less 
quadrate, with a variously denticulated cutting point. Outside this the 
teeth are all aculeate, and increase in length toward the margin. (PI. IV., 
fig. F.) 
In the paper already mentioned, I stated that I had failed to discover 
how the oviduct was connected with the albumen gland, but on the 5th 
September, 1879, I found a specimen in which the oviduct was distended 
with ova, and which showed clearly that my supposed accessory gland is th 
commencement of the oviduct. The sketch on Pl. IV., fig. w, is from this 
specimen, 
Lymyxa stacxatis. This species has been introduced intentionally into 
the river Avon at Christchurch, and is now abundant below the Acclimati- 
zation Gardens. 
oo 
EXPLANATION OF PLATE III. 
Nore.—The numbers under the teeth give the longitudinal row of that tooth from the 
tre. Teeth belonging to the central row have no number. 
Patula coma. Teeth x 480. 
Patula hypopolia. Teeth x 480. 
Patula igniflua. Teeth x 480. 
Placostylus bovinus. Teeth x 150. 
Daudebardia novoseelandica. Teeth x 80. 
Helix fatua. Teeth x 480 
Milax antipodum. Teeth x 280. 
Patula igniflua. Jaw x 40. 
Helix fatua. Jaw x 80; a end of jaw further enlarged. 
Placostylus bovinus. Jaw x 15 
Limaz agrestis. Jaw x 15. 
Milaz antipodum. Jaw x15. 
Arion fuseus. Jaw x 35. 
Milaz emarginatus. Jaw x 15. 
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