SOPHIN.l, 



283 



[Subfamily SOPPIININ.E. 



The single genus SojyJiina. 



The form of the shell with its more or less developed umbilical 

 keel, together with the very dilfereut type of radula, distinguishes 

 it from the preceding subfamilies. 



The animal possesses ample broad right and left shell-lobes, 

 also a very large and entire left dorsal lobe. Tlie radula presents 

 teeth of similar shape throughout the row, pyramidal in shape, 

 sharply pointed, springing from an obtusely rounded basal plate. 

 There are 80-100 teeth in the row.] 



Genus SOPHINA. 



Sophiua, Benso7i, A. M. N. H. (3) iii, 1859, p. 473 ; id. t. .. (3) v, 

 1860, p. 26 ; id. t. c. (3) xi, 1863, p. 323 ; Stoliczka, J. A. S. B. 1871, 

 2, p. 252; [Godioin-Austen, Mol. Iml ii, 1907, p. 221, pi. 115, 

 rigs. 5, 5 rt (animal), pi. 116, fig-. 3 (anatomy)]. 



Type, *S^. calias, Bs. 

 Range. Tenasserim Provinces. 



Shell umbilicated, depressed or globosely depressed, thui, horny, 

 generally resembling Macrochlamijs except that the columella is 



[Fig. 86. — SopJtina s<.-kisfostelis. 



A. Animal viewed from the right and left sides, shell remoyed to show 



shell- and dorsal lobes. X t-4. 



B. Genitalia. X 1"4. 



C Jaw, enlarged (after Stoliczka). 



D. Teeth of radula (ditto), 5th'and 14th, lateral view of.] 



