540 



110. Neritina Ziczac (pi. cxii. f. 105, 106, 107, 110), 

 Lamarck, Amm. s. vert. N. Coromaiideliana, Recluz, Incl. 



N. testa N. Zebra simili, scd solidiore ; columella magis tumida, 

 epidermide tenui, lineis et fasciis obliquiis varie positis. 



More solid than N. Zehra, with the columella more tumid. The 

 black markings are very variously placed. The variety from Coro- 

 mandel (f. 110) has angular spots placed diagonally. In the 

 absence of certain identiii cation, we follow Dr. Philippi, in ap- 

 plying the name to tliis species. - 



Tahiti, Manilla, and the Island of Luzon, Philippines. Cuming. 



111. Neritina Cuvierana (pi. cxii. f. 91, 95), Rechtz, Eev. 

 Zool., 1841, p. 338. 



N. testa N. Smithii simili, sed apertura majore, anfractibus su- 

 perne elevatis ; columella subcomplanata, rubro marginata ; colore 

 griseo maculato et nonnnnquam fasciato. 



Differing from N. SmitMi in the largeness of the aperture, the 

 flatness of the red-margined columella, and in the arrangement of 

 colours; it approaches nearer to N. comtmmis, from wliich it 

 differs principally in the shape of the spire, the upper part of the 

 whorls being depressed close to the suture, and then slightly 

 elevated. 



New Ireland. R. B. Hinds. 



112. Neritina Cumingiana (pi. cxii. f. 115), Recluz, Hev. 

 Zool., 1842, p. 77. 



N. testa N. turrita simili, sed solidiore, longe magis conica, 

 anfractibus qnatuor validis, declivis. 



ResembUng N. turrita in the characters which distinguish that 

 species from N. Zebra, and differing from it in being still more 

 conical, having four deep and gradually increasing whorls. The 

 shell is also more solid, and the epidermis thin. 



Island of Siquijor; on stones in mountain streams. Cuming. 



113. Neritina aterrima (pi. cxvi. f. 270), Koch, Phil. 

 Abbild. 1. 1, f. II. 



N. testa globoso-subconica, nigra; spira exsertiuscula, anfrac- 

 tibus prope suturam subexcavatis ; apertm-a obhqua, alba, labio 

 interno subcomplanato, ad marginem in medio paululiim emargi- 

 nato, minute dentato ; labio externo subtus subproducto. 



Rather nearly resembling N. caff r a (Sp. 101), next to which it 



