75 



THE MARINE MOLLUSCA OF MADRAS AND THE 

 IMMEDIATE NEIGHBOURHOOD. 



I'.v I. COSMO MELVILL am. R. STANDKN. 



(Read before tlie Society, Ocl. I3tli, 1897). 



{Continued from page 4S). 



Natica pulicaria Phil*.— One small individual, exactly agreeing 

 in niaiking with a large specimen so named in J- C Melvill's collec- 

 tion. Habitat, hitherto unknown. 



Natica (Neverita)chemnitzi Recluz {■=^N'. ampla ?h\\. xax.). — 

 Three typical exami)les. Indian Ocean, China, Japan, Australia, 

 Mauritius. 



Natica 'Polinices) columnaris Recluz. — Several small speci- 

 mens. Philippines, Mauritius. 



Natica (Polinices) mamilla L. — The numerous specimens we 

 have are medium-sized, and typic al. East Indies, Lifu, Central Poly- 

 nesia, Philipi)ines. 



Natica (Ruma) zanzibarica Recluz {=iy. melanostoina Gm. 

 van).* — Our specimens are a little more quadrangular than the type 

 of N. melatwstoma. East Indies, Mauritius, Madagascar, Philippines, 

 Western Polynesia. 



Sigaretus javanicus Or. — Some good examples. East Indies. 



Sigaretus neritoides L.— Several examples of this common East 

 Indian Sii^tin'tiis, in a very good state of preservation. Some confusion 

 attends the limitation of the various forms of this genus, and Tryon 

 considers .S". javanicus and S. fieritoides identical.^ We can hardly 

 agree with him. 



Sigaretus (Catinus) planulatus Em.* — Several ; easily dis- 

 tinguished by its smooth, flattened surface. Australia, Philippines, 

 Zanzibar. 



Family lANTHINIDAl. 



lanthina globosa Sw. — A beautiful and perfect example, pale 

 violet in colour. 



Family SCAI.ARIID^. 



Scalaria (Scala) tenuicostata Sow.— Quite perfect and very 

 beautiful, the ribs being very closely set. Japan. 



Scaliola bella .A. Ad. — One, seemingly identical with this 

 Japanese species. Our example is only eight whorled, however, as 

 against nine. It may very likely be an undescribed form, of which 

 more material is wanted before deciding. 



Aclis eoa Melvill.* — One, agreeing with the tyjje from Bombay. 



I Man. Moll., vol. 8, p. 55. 



