collinge: non-operculate land and freshwater molluscs. 73 



of de Morgan (23), which species, however, has a more heHciform 

 shell, and according to the author's figures (op. cif., pi. v, figs. la-c), 

 there is a distinct notch or groove in the upper portion of the aperture. 

 *S'. xyki'd is much more distantly related to S. planus, Fulton (11), 

 with which it partly agrees in the form of the aperture. I have much 

 pleasure in naming the species after Mr. E. R. Sykes. 



Streptaxis striatula. n.sp. 



PI. iv, figs. 3, 4. 



Shell dextral, flattened above and below, umbilicus deep, striae fairly 

 prominent ; whorls 6, irregular, last whorl occupying the greater 

 portion of the shell, deeply depressed above, armature consisting of 

 one long, lamelliform projection, situated on the columella whorl; 

 peristome reflected and slightly thickened. 



Diam. maj. 13, min. 8 "5 ; alt, 5 millim. 



Hah. Belimbing, State of Ligeh. 



This species is probably allied to S. theaeocola, Heude (16, p. 151, 

 pi. XXXV, fig. 25), and also to aS'. borealis, Heude (16, p. 79, pi. xviii, 

 fig. 26), but distinct, I think, from either. 



VITRINIDAE. 



Helicarion, Fer. 



Heliearion permolle, stol. 



Hdicarion permolle, Stol. : J. As. Soc. Bengal, 1873, vol. xlii, 



p. 18, pi. i, fig. II, pi. ii, figs. 21-23. 

 Hah. — Gunong Inas, 3,000 ft.. State of Perak. 

 This is certainly the mollusc described by Stoliczka, for both 

 externally and internally it agrees with his description and figures. 



GIRASIIDAE. 



Apoparraarion, n. gen. 

 Apoparmarion partridgii, n. sp. 



PI. iv, figs. 5-12, PI. v, figs. 31-33. 



Animal yellowish-brown, head bluish, tentacles yellow ; mantle blue, 

 coarsely granulated, rising upon the shell on all sides, on the right side 

 posteriorly a large wing-like lobe covers the apex of the shell. Body 

 laterally divided up into somewhat diamond-shaped figures by a series 

 of oblique lines. Rugae small. Peripodial groove distinct. Foot- 

 fringe yellow, no lineoles. Foot-sole yellow, divided into median and 

 lateral planes. Caudal mucous pore not extending to the foot-sole. 

 Length (in alcohol) 25 miUim. 



