ig2i.] N. Annandale & R. B. S. Seweli, . Vivipara. lyy 



Phase halophila, Kobelt. 

 (Plate II, figs. 9, 10.) 



190S. Vivipara annandalei halophila, Kobelt, op. cif., p. 162. 

 IQOO. Vivipara animndalei halophila. Kobelt, torn, cit , p. 2Q7, pi. 59. 

 Hgs. 17-20. 



The type series of this phase was noted by Nevill as ' a short 

 aiigulate form, almost indistinguishable from some of the Burmese 

 var. doliaris.' It resembles animndalei ver^- much as doliaris does 

 balteata, but is certainly not a local race. The type-series was 

 from the Punjab Salt Range, but I have also examined series from 

 Calcutta and Burdwan in Bengal. The shell has a distorted appear- 

 ance and is usually eroded at the tip. Its sculpture is coarse and 

 irregular, the dark bands are usually incrassated and the body- 

 whorl frequently sub-biangulate. The aperture resembles that of 

 the shell of annandalei, but is usually larger and broader. 



In calling this form halophila, Kobelt referred to the name of 

 the locality of the type-series, but it is by no means improbable 

 that the phase does live in water of abnormal chemical composi- 

 tion. Unfortunately I have never found it living myself. 



Phase incrassata, nov. 



(Plate II, figs. 3, 4-) 



Shells of tiiis phase differ from those of the race eburnea 

 in being very thick and opaque and in having as a rule coarse 

 irregular varices on the body-whorl. They are often almost devoid 

 of pigment. Sometimes the umbilicus is more open than usual. 

 I have examined a good series from Poona in western and from 

 the Knrnool district in southern India. Unfortunately I know 

 nothing of its habitat, but it resembles ebiirnea so closely in all but 

 the thickness and sculpture of the shell that it can hardly be more 

 than a phase of that race. 



Phase pachydolicha, Annandale. 



1921. Vivipara beiigalensis phn-,c pachydolicha, .Annandale, Rec. Geol. 

 Surv. Iiid., l.I, p. 367, pi. .\i, figs. 5-7. 



I assign to this phase certain large elongate shells in which 

 the umbilicus is more open than usual, and the mouth small and 

 oval. The whorls are swollen and the sculpture impressed, with 

 the upper surface of the whorls broadly and obliquely, but some- 

 what obscurelj^ flattened, just outside it. There are numerous 

 distinct minutely sinuate, spiral striae on the surface, and the 

 longitudinal striae are coarse and irregular. The epidermis is a 

 dark olivaceous brown in colour with numerous longitudinal black 

 streaks. The spiral bands are narrow and obscure. 



I have seen only two fresh specimens of this phase, but there 

 is a series of fine subfossil shells in the collection of the Geological 

 Survev of India. 



