252 F. Stoliczka — Notes on Terrestrial Mollusea. [No. 3 r 



receptacle, nor an amatorial sac has been observed, though the 

 single specimen examined appeared to be full grown. 



The jaw is almost semicircular, very thin, smooth, broad; the 

 terminal corners of the anterior concave edge are somewhat roundly 

 projecting, and the middle part has a very slight tooth. 



The radula appears to be comparatively large, but I have not 

 seen it perfect. The teeth are arranged in almost straight, trans- 

 verse rows, about 120 in each row, the median teeth in each row being 

 conspicuously larger than others. The centre tooth is, as usually, 

 symmetrical, tricuspid, the middle cusp being very long,, pointed and 

 curved ; the lateral cusps are much smaller and below them there 

 is on each side a second small blunt denticle present. The lateral 

 teeth are tttrned outwardly on either side, the inner lateral cusp 

 becoming smaller, while the outer slightly increases in size, until 

 on the last laterals it almost equals the principal cusp. 



Genus, Sophina, Benson. 

 Ann. and Mag. Nat. Hist., 1859, vol. Ill, p. 473. 



The shells of Sophina are characterized by a more or less 

 thickened columellar lip, forming with the basal portion of the 

 outer lip an angle, and producing a ridge round the umbilicus ; they 

 are of small or median size, sub-orbicular shape and thin structure. 



Three species have been described by Mr. Benson, one of which 

 turns out to be only a variety of another, and I shall now add two new 

 species. All are from the neighbourhood of Moulmein, and are on- 

 ly found on limestone hills. The animals are very similar to each 

 other, and it will suffice to give some details of the type of the genus. 

 All of them can fully retract their bodies in the shells, but some- 

 times with difficulty as in Helicarion, to which Sophina, on account 

 of the great development of the mantle lobes, bears a close relation. 



The foot of S. calias is very elongated, rather narrow, with a very 

 distinct lateral line, marked with oblique furrows above it, nearly 

 smooth below it down to the edge of the sole. The posterior end is 

 obliquely truncate, occupied by a large, high gland and superseded 

 by a distinct horn-like appendage. The sole has two longitudinal 

 grooves, dividing it in three, subequal parts, the inner being some- 

 what narrower than the outer parts ; the grooves are usually well 



