MELANID^. 897 



Long. max. 27^, diam. 9 mm. 



The other form is shorter and more rounded, of a pale green, with scarcely 

 any brown spots or markings and with the basal band nearly, or altogether, 

 obsolete ; the transverse ridges are irregular and less acute, the longitudinal ribs, 

 on the contrary, strongly developed, becoming obsolete only below the middle of 

 the last whorl ; decollated like the preceding. 



Long. max. 20, diam. 8 mm. 



Sub-Genus Melanoides, Oliv. 

 Melania (Melanoides) jugicostis, Bens. 



Melania jugicostis, Bens. Ms,, Con. Indica, pi. 110, figs. 8, 9. 

 Melania {Melanoides) jugicostis, Nevill, I. <?., p. 33. 



Unfortunately, only two specimens of this interesting form were brought 

 back by Dr. Anderson ; they were found at Myadoung with the preceding and 

 following species. The species seems to me to belong rather to Melanoides than to 

 Flotia; it certainly a good deal more resembles the Chinese M. cancellata, Bens., 

 than Flotia scabra ; in either case it is a very distinct and well characterized species, 

 and is admirably figured in the * Con. Indica.' Shell small, slightly decollated ; 

 whorls five, abruptly angular, smooth and shining, with a few rather distant, 

 somewhat obsolete and irregular transverse ridges on the lower half of the last 

 whorl ; longitudinally angularly ribbed, ribs very distant, thick and prominent, 

 almost varicose, eight of them on the last whorl, disappearing towards the base ; 

 very pale green, with no markings, except a subobsolete brown band at base. 



Long. 12, diam. 6 mm. 



Melania (Melanoides) iravadica, Blanf. 



Melania iravadica, Blanf., Proe. Zool. Soc, 1869, p. 445; Con. Indica, pi. Ixxi, fig. 1. 

 Melania [Melanoides) iravadica, Nevill, I. c, p. 33. 



This seems to me the Upper Burmese form of a shell described by Gould as 

 M. haccata} Mr. Theobald has presented a series to the Indian Museum from the 

 Upper Sal ween Biver, well figured by him^ and by Brot.^ At first sight they seem 

 to differ considerably from the form described as M. iravadica ; there is scarcely, 

 however, any real difference, except the larger size and more distinct sculpture of 

 typical M. baccata, which has three rows of nodules, the upper one of which is 

 altogether obsolete in M, iravadica ; in one or two specimens, however, of the 

 former this row is also obsolete. The type specimens of M. iravadica are in the 

 Indian Museum. 



Typical M. baccata, of three whorls only, long. 38J, diam. 20 mm. 



1 Proc. Bost. Soc, 1847. 



' Con. Indica, pi. Ixxv, figs. 3, 11. 



' Conch. Cabinet, pi. ix, fig. 6. 



K 5 



