CLAUSILIA.. 321 



seen a considerable series, but 1 have not observed the same 

 amount of variation as in Clausilia gouldiana. It has close 

 affinity with the latter, but may at once be distinguished by the 

 more obtuse apex, the apical whorls being stouter and increasing 

 at once, not gradually as in gouldiana, the upper part of the 

 spire is consequently more cylindrical and not concave. The 

 number of whorls ranges between 81 and 10, and the palatal 

 plicae vary in number from five to seven, the last being more 

 nearly vertical than in gouldiana. The shell is generally of more 

 solid texture, darker, and unicolorous, not whitish or pale 

 corneous, as in its ally, and the peristome dark. 



In the Cuming collection I found two shells from Tavoy, 

 labelled by Pfeiffer, which are rufous corneous, with the early 

 whorls paler; one has 9^ whorls, and measures 26 x 6-5 mm., the 

 other has 10 whorls, and attains a length of 27*5 mm., the 

 diameter being the same as in the first. Another tablet in the 

 Cuming collection bears three shells, also from Tavoy, which are 

 pale corneous with the peristome almost white, one of which has 

 10 whorls and measures 26 x 6 mm., but a second with 9 whorls 

 does not exceed 24'5 mm. in length, although its diameter is also 

 6 mm. The Beddome collection contains four specimens, very 

 solid and dark chestnut in colour, with a dark fuscous peristome ; 

 one of 8j whorls measures 26x7 mm., another of 9 whorls is 

 27 X 7 mm., while the other two have each 9| whorls and measure 

 respectively 28 x 7 and 30 x 6'5 mm. Lastly, a variety from 

 Zwagabin in the Theobald collection is pale corneous and less 

 ventricose than the type, possesses 10 whorls and measures 

 27 X 6 mm. 



283. Clausilia fusiformis, Blanford. 



Clausilia fusiformis, Blaiiford, J. A. S. B. xxxiv, 1865, p. 80 ; 



Pfeiffer, Mon. Helic. Viv. vi, 1868, p. 410 ; Hanley & Theobald, 



Conch. Ind. 1870, pi. 24, fipr. 6; Sowerby, Conch. Icon. xx. 



1875, Clausilia, pi. 7, fig. 62 j Pfeiffer, Moil. Helic. Viv. viii, 



1877, p. 464. 

 Clausilia {Phfedusa} fusiformis, Blanford, J. A. S. B. xli, 1872, 



p. 203, pi. 9, fig. 9; Nevill, Hand List, i, 1878, p. 183. 

 Clausilia (Phaedusa (Pseudonenia)) fusiformis, Boettger, Ber. 



Offenbacher Ver. Naturw. 1878, Mitt. p. 54 ; Pfeiffer & Clessin, 



Nomencl. Helic. Viv. 1881, p. 391. 



Original description : " Shell not rimate, fusiform, horny, 

 thin, white ; obliquely, very closely and finely costulately striated 

 throughout. Spire diminishing slowly at first above the middle, 

 then rapidly attenuate towards the acute apex ; suture simple, 

 scarcely impressed, deeper towards the apex. Whorls 9, convex 

 above, flattened below, the last very little narrower than the 

 penultimate. Aperture semioval (nearly semicircular) ; upper 

 parietal plait very fine ; internal palatal teeth 7, the uppermost 

 by far the longest. Peristome thin, expanded, not continuous, 



T 



