GODWIN-ArSTEX : THE GENUS ETJPLECTA. 177 



Among other shells found by Mr. Preston is a Kaliella of the 

 K. Barrachpurensis group, and a very small globose Zainproci/stis (?). 

 I also take this opportunity to describe a small Helicoid found 

 by Dr. Leith at Nuwara Eliya, which I believe to be new. 



1. EuPLECTA Prestoni, u.sp. PI. XIV, Figs. 1-1^. 



Shell depressedly conoid, keeled, scarcely perforate ; sculpture, 

 fine transverse filiform ribbing, each rib having a short white hair 

 at intervals rising from it, giving it a decussate appearance to the 

 imaided eye. There are nine rows of these hairs on the penultimate 

 whorl. The shell is smooth and shining below, but under strong 

 power is found to be crossed by transverse lines. Colour, bright 

 sienna. Spire low ; apex blunt ; suture moderate, lirate. Whorls 

 five, sides convex, rounded below. Aperture narrowly quadrate, 

 peristome thin ; columellar margin oblique, the columella then re- 

 flected. Size: maj. diam. 4-8; alt. axis, 2'25 mm. Animal dark- 

 coloiired, the palHal groove well seen ; mucous gland with a small 

 overhanging lobe. 



The radula, which was extracted complete, is very minute, 

 measiiring 0-053 mm. long by 0-018 broad, the breadth of the large 

 median teeth being 0-006 wide. The dental formula is — 



38 : 1 : 38 or 

 28 : 10 : 1 : 10 : 28 



The centre tooth is very long and spear-shaped, with tAVO well- 

 developed cusps low down at the base on either side ; the succeeding 

 admedian teeth also have long narrow points with a large cusp 

 on the outer side ; the laterals are bicuspid, the innennost being 

 the longest, and they decrease in size towards the outer margin. This 

 agrees with suhopaca of Semper, but the number of teeth in the 

 row is less. The jaw is rather straight, with a central projection. 

 In E. climacterica, the teeth are of the same type, arranged — 



+ ? : 3 : 12 : 1 : 12 : 3 : + ? 



the three outer ones being intermediate in form. 



It was not to be expected that in such a specimen much could be 

 seen of the generative organs, but what remains agrees with Semper's 

 descriptions. The amatorial organ is long, with a sharp conoid point. 

 The spermatophore is also preserved, and is long, narrow, and gutter- 

 like, with spikelets at intervals along one side of the margin. 

 The hairs of the periostracum are very beautiful objects under "the 

 microscope. The filiform rib is seen to have a white thread attached 

 and lying on its upper surface, while the hairs themselves are 

 seen to be formed by loops, as it were, in the thread, di'awn up 

 from the rib on which it rests. To put it another way, suppose 

 short lengths of thread be taken, and the outer fourth of each 

 to be drawn out to a fine point and turned up at right angles ; 

 if these threads be placed in a line and two fine ends united, 

 hair-like points would be the result. 



Hab. — Uda Pussellawa, Ceylon (H. B. Preston). 



