MOLLUSCA OF INDIA. 199 



oblong plates carrying two equal close-set conspicuous curved teeth 

 springing from the inner upper margin of the plate and pointing 

 diagonally inwards ; on the outer side of these bifid teeth there is 

 one minute little sharp tooth. 



Stkesia clatheatuloides. 



Locality. Anamullay Hills (Beddome). 



Gude, when describiog this species in ' Science Gossip,' vol. iii. 

 p, 332, May 1897, says, referring to Syhesia datliratida, that he 

 believes the specimens referred to under that name by Mr. G. Nevill, 

 in his ' Hand -list of Species in the Calcutta Museum,' as coming from 

 Darjiling, to belong to this new form. Seven specimens are quoted 

 as ex coll. F. Stoliczka. I am afraid there has been some mixing 

 of specimens here. Stoliczka's collection was incorporated with 

 the Museum Collection after his death, and this sort of mistake might 

 very likely occur. I have never seen the species in undoubted 

 Darjiling collections such as Dr. Blanford's and the large number I 

 have myself. I do not think Stoliczka ever collected in Darjiling 

 himself, so these shells must have been sent to him. 



Genus Coeiilla, Adams. 

 (= Atopa, Albers.) 



It is now necessary to show what degree of relationship is 

 exhibited in the anatomy of Sykesia and its allies 1 hysanota and 

 Philalanka compared with that of its associated genus Corilla, 

 restricted to Ceylon, and how far the iuternal organs of this 

 last agree with Plectopylis and its wide and distinctly separate 

 distribution. 



The ovo-viviparous habit of the animals of all these genera shows 

 how intimate is their relationship. 



CoEiLLA GTJDEij Sykcs. (Plate CXIV. figs. 3-3^/.) 



Corilla giidei, Sykes, Proc. Malac. Soc, July 1897, p. 234, pi. xvi. 

 figs. 8-10 (shell). 



The specimen I describe and figure was collected at Newara Eliya, 

 Ceylon, and came among many other interesting things sent me by 

 Mr. 0. Collett. The foot (fig. 3) is short, while and smooth beneath, 

 folded down the centre (fig. 3 a), no indication of a median area. 

 Closely-set rectangular black patches give the upper surface a very 

 dark colour ; a pallial fringe is very noticeable. The membrane of 

 the visceral sac is black for some distance behind the mantle-zone. 

 The right dorsal lobe (fig. 3 a) is small, the left long, following the 

 margin of the peristome, both pale-coloured ; the mantle-margin is 



