1871.] F. Stoliczka — Notes on terrestrial Mollwck 163 



I have not been able to find a distinct jaw, either in ohtusus, Bur- 

 manicus, Pfeifferianus or Andamanicus. The upper lip is only slightly 

 thickened on the upper side, where the jaw should be situated. 



The radula is long, narrow, the lateral margin on either side 

 curved upward ; it is composed of numerous, very angular series 

 of simple, almost straight, sharply pointed, teeth, provided below 

 with a small projection. They are very different from those of the 

 Helicid^), but, as already noticed, strongly resemble those of 

 Testacella. There appear to be from 40-50 teeth in each row. 



The anatomy of St. Burmanicus is very similar to that of ohtusus. 

 A few unimportant differences I shall notice further on. I have 

 also examined St. Andamanicus and Pfeifferianus, and found their 

 anatomical characters quite similar to those of ohtusus. The form of 

 the teeth appears to be particularly characteristic. 



1. Streptaxis Burmanicus, Blf., pi. vii, figs. 5, 6, 7. 



1865, J. A. S. B. vol. XXIV, pi. ii, p. 81 and p. 95.— Hanley and Theobald, 

 Conch. Indioa, pi. viii, fig. 10, (non fig. 5). 



2. Streptaxis Blaneordianus, Theob., pi. vii, figs. 8, 9. 



J. A. S. B., vol. xxiv, p. 245, et Conch. Ind., pi. viii, fig. 5, (non fig. 10). 



These two species are closely allied to each other. Blanford's 

 description must stand as that of true Burmanicus, of which fig. 5 

 pi. vii, represents a characteristic specimen. It is a globosely in- 

 flated shell with a subconic, slightly oblique spire, the antepenulti- 

 mate whorl laterally barely projecting, in a front view, beyond the 

 periphery of the last whorl. In Mr. Theobald's description of 

 Burmanicus characters are noticed which only apply to his Blanfor- 

 dianus ; the description must have been taken from specimens of 

 both the species. Specimens, agreeing in shape and size with typical 

 forms of Burmanicus from Arracan, also occur at Tonghoo, where 

 they were collected by Mr. Theobald, (see pi. vii, fig. 5). On the 

 hill of the great Pagoda at Rangoon, I found a smaller variety. 

 Two forms of this latter are represented in figs. 5 and 6. The 

 aperture is slightly more produced and narrower, but the charac- 

 teristic form of the whorls and their volution are retained. 



The animal has the anterior part of the bod}', as usually, very 



