MOLLrsCA OF IXDIA. 195 



is small and triangular ; the left dorsal narrow, in two parts. On 

 breaking away the shell, two embryonic shells were brought into 

 view, very immature ; the future shelly covering was in the stage 

 of minute disconnected particles, arranged over the globose mass. 



The radula was not perfect. I counted the admediau teeth, but 

 not the laterals : 



+ 12 . 1 . 12 + 



The laterals are exactly as in Philalanka thwaitesi — elongate, 

 tricuspid, and finger-like (vide Plate CXIT. fig. 1 c). 



Philalanka floweri, n. sp. (Fig. 1.) 



Batu Caves {Captain Stanley Flower). 



Shell globosely conoid, smooth, shiny, scarcely perforate, rounded 

 below ; sculpture indistinct transverse lines of growth ; colour pale 

 ash; spire somewhat depressed, blunt ; suture angulate. Whorls 6|, 

 the last with two strong spiral raised lines ; one on the upper 

 whorls, the side nearly vertical below it. Aperture lunate, angulate 

 on upper outer margin ; peristome thickened ; columellar margin 

 subvertical, strong, not reflected. 



Size : maj. diam. 3'0, alt. 2-8 mm. 



Its nearest and close ally is Sitala carinifera, var. marangensis 

 of Aldrich, described from Maraug in Sumatra (' The Nautilus,' 

 May 1898, p. 2). Floiveri is, however, a more tumid shell and 

 much more globose below. The Sumatran shell will stand as 

 marangensis ; it has no close affinities with carinifera, Stoliczka. 



Fig. 1.— P. floweri, x 9. Fig- 2.— P. batuensis, X 9. 



Philalanka battjensis, n. sp. (Fig. 2.) 



Shell depressedly conoid, narrowly umbilicated ; sculpture 

 nearly smooth, slightly striate transversely ; colour whitish (shell 

 not fresh). Spire low, conoid, apex obtuse ; suture simple, with 

 two thread-like ribs above. Whorls 5, increasing gradually, the 

 last slightly subangulate, with one rib on the periphery, making it 

 tricarinate ' on the last whorl. Aperture quadrate, wider than 

 high ; peristome thin on outer margin ; columellar margin vertical, 

 slightly reflected. 



Size : maj. diam. 2-5 ; alt. shell 2, alt. axis 1-5 mm. 



This shell is distinct from Sitala carinifera, Stoliczka, Penang 



PART X, s 



