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Hurron.—On some Pulmonate Mollusca, 155 
teeth are 84-1-84, of which about 12 are laterals, and there are about 111 
transverse rows. I have figured, from a Dunedin specimen, some of the 
teeth on Pl. IIL, fig. x. 
OnsHIDELLA pateLLorpes, No jaw. Radula is ‘17 inch in length, and 
‘1 inch in breadth at the posterior end, tapering to a point anteriorly. 
There are 84 transverse rows of teeth, which form an obtuse angle of about 
125°, salient anteriorly. (PI. IV., fig. x.) Teeth 180-1-130. The central 
tooth is tricuspid, the median cusp with a short pointed cutting point ; the 
side cusps with broad incurved cutting points. The laterals pass gradually 
into the marginals ; they all have a single cusp bearing a blunt cutting 
point. From the anterior end a curved process of the base projects for- 
ward ; this is short in the rows near the centre, and gets longer toward the 
margin. (Pl. IV., fig. B.) i 
Burmus emposa, Gould (Physa)? These specimens were given me 
by Mr. J. D. Enys, and came from the Broken River. The spire is very 
short, the whorls are rounded, without any trace of keel; the columella 
Plait obsolete. The shells are olive green in colour, LL. °8; B‘17. The 
apex in all is eroded, but the whorls are apparently four. I am doubtful 
whether this is Gould’s gibbosa, but it may remain under this name for the 
Present, until the species are better known. 
Animal, The edge of the mantle is simple, and not reflexed over the 
shell. Tentacles long and filiform, with a rounded lobe at their outer bases. 
Eyes sessile at the inner bases of the tentacles. Foot short and rounded 
behind, truncated and not expanded in front. Rostrum bilobed. PH2V;, 
fig. v.) The animal is yellow-brown, minutely speckled with greenish 
brown. It walks by jerks. The eggs are in transparent capsules attached 
to stones, ete., usually three or four together, arranged in a single layer. 
Dentition. The upper jaw is simple, arcuate, and attenuated suddenly 
at each end: it is transversely striated. ‘The lower jaw is membraneous, 
soft, and yielding. (Pl. IV., fig. 7.) The radula is -07 in length, and -08 
in breadth ; it is parallel-sided and rounded at the anterior extremity. 
There are 126 transverse rows of teeth, curved slightly forwards. (Pl. IV., 
fig.a.) The teeth are 27-1-27. The central tooth has its base longer than 
broad, and with parallel sides; the reflected portion has a single cusp, 
Which bears two small cutting points, variable in shape and size. There 
igh about ten laterals on each side ; they have a single cusp, which bears a 
tridentate cutting point. In the marginals the cutting point has numerous 
denticulations, and the reflexed portion gets longer. (PI. IV., fig. c.) 
ee simple mantle margin, not reflected over the shell, and the sinistral 
twisting of the shell itself, would place this species in Bulimus; but the shell 
'S not elongated, the aperture is not narrow, and the foot is not dilated 
