410 Journal of the Asiatic Society of Bengal. [N.S., XIX, 
Yangtse system (7, 800 feet). The form is thus evidently of 
wide distribution in the province. 
Vivipara margaryoides Annandale. 
(Plate 17, Figs. 6, 7). 
1924. Vivipara ey at Annandale, Proc. Roy. Soc London, (B) 
XCVI, p. 64, Fig. 4A. 
The shell is thick, of large size, much higher than broad 
and of turrited form, the body-whorl being relatively broad, 
the spire much narrower but approximately of the same 
height. The body-whorl is much broader than high in dorsal 
view, somewhat oblique ae distinctly convex. “In ventral 
view the upper part is convex but below the umbilicus, which 
is closed or minutely Aika, it recedes considerably. There 
is no peripheral keel or angle. The aperture is somewhat 
flame-shaped, pointed and retroverted above, broadly rounded 
elow, and oblique in both planes. It is not much higher 
than broad. The columella is arched and very oblique, with 
its callus narrow but stout and ex panding a little below. The 
peristome is complete. The outer lip is thick, but not more so 
than the rest of ea shell. The spire has an elongate, dis- 
pea conoidal form, and consists of 5} to 64 whorls. The 
ex is minutely date tened. The lowest three whorls are 
distinotly convex. The suture is narrowly impressed and not 
very oblique, always more or less irregular towards the apex. 
body-whorl close set, outwardly curved, somewhat irregular, 
coarse longitudinal striae or fine costae are visible to the naked 
eye. These are also present but finer on the rest of the shell 
and are crossed on the spire by numerous fine impressed spira! 
lines, which give the surface a minutely reticulate appear- 
ance. 
Measurements of Shells 

Rican | “ 
| 2 | 5 6 j 
_ (type) 68 Ste 
oe ic oe oe : 
Height .. -- 47.5 imperfect 44-75 44 43 © 42 41° 
: | | | 
Max. diameter .. 29.5 | 32 (285 |27°5 26 (26 27°25 
Height of mouth... 19.25 22 195 | 195 20 18 17°5 
Max. diameter ..' 14.75, 16 | 13 “135 “145 1312.5 




1 In young specimens faint traces of spiral ridges can sometimes be 
detected. 
ee 
ost acallmaemceaai 
i, 
mm 
