1871.] F. Stoliczka — Notes on terrestial Mollusc a. 167 



Adult Jig. 11. Jim. fig. 12. 

 Diam. maj , 10*4 9 -3 m.m. 



,, minor, 7*2 6*4 ,, 



Altitudo, 9-6 7-8 ,, 



Sab. Prope Moulmein, proviucia Tenasserini. 



This species is readily recognised from others by its remarkably 

 obtuse, almost pupoid form, and comparatively regular growth 

 of the whorls ; there is a distinct tooth on the columellar lip 

 present, and another tooth is generally also traceable on the op- 

 posite outer lip, though not so well defined as the former. In 

 younger specimens the penultimate whorl is subangulate at the 

 periphery and laterally somewhat projecting, but in older shells 

 this angulation generally becomes less distinct and often quite 

 disappears. The whole shell is densely costulated except at the 

 base, where the ribs are only traceable in the umbilical cavity. 



The animal is pale yellow with a beautifully yellowish red tinge 

 on the upper anterior part of the body, which is, as usually, much 

 longer than the posterior ; the pedicles are also red, and the ten- 

 tacles paler and very short ; edge of mantle considerably thickened, 

 whitish. Other details have already been recorded in my obser- 

 vations on the anatomy of the genus. 



The species has been found on the limestone hills south of Moul- 

 mein, where it does not appear to be rare. Young specimens, as 

 long as the whorls are regularly coiled, closely resemble Benson's 

 Helix bo7nbax, (Ann. and Mag. N. H., 3rd ser., Ill, p. 186), but 

 they do not possess such a great difference between the longer and 

 shorter diameter, as given by Benson of bombax, (no doubt a 

 young Strepta-xis), in which the inner whorls are much closer 

 wound (compare Conch. Indica, pi. XXXI, figs. 1 and 4). An illus- 

 tration of a young shell of St. obtusus is given on pi. vii, fig. 13 ; 

 the peristome is slightly reflected. 



5. Streptaxis Sankeyanus, Bens., pi. vii, fig. 14. 



1859, Ann. and Mag. Nat. Hist., 3rd ser., Ill, p. 472.— Hanley and Theobald, 

 Conch. Ind., pi. viii, fig. 72. 



The characteristic given by Benson is' excellent ; it is not neces- 

 sary to repeat it. The species is readily known by its strong carina- 



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