22 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



Darnley Island, Torres Straits, 5, 10, 15, 20, 30 fathoms, bottom 

 of mud, sandy mud, and white sand, two hundred specimens 

 found. The type specimens were dredged by me at the " Sow 

 and Pigs" reef, Port Jackson, in 1870, and described as above, 

 and deposited in the British Museum by Mr. G. F. Angas, F.L.S., 

 F.R.G.S. Species rare in Port Jackson. 



10. — Neritina (Vitta) Siquijorensis. 



Merita Siquijorensis. Recluz. Proc. Zool. Soc, London, 1843, p. 

 198. 



Neritina Siquijorensis, Sowerby, Thes. Conch., Vol. 2, p. 510, 

 pi. 113, fig. 145, 146. 



Hab. Hall Sound, New Guinea, one dead specimen found on 

 the beach at the mouth of the Ethel River. 



11. — Neritina (Dostia) crepidtjlaria. 



Neritina Grepidularia, Lam. Anim. Sans. Vert., Tome 6, part 2, 

 p. 186. 



„ „ Sowerby, Thes. Conch., Vol. 2, p. 509, 



pi. 113, fig. 139, 140. 



Hab. Katow River, New Guinea, found on trees and roots. 



12. — Neritina (Neripteron) marmorata, n. sp. 



Shell transversely oval, thin, transparent, minutely decussated, 

 with fine strias, horny brown, rayed and reticulated with white ; 

 quadrately winged at the upper part, rather sharp, spire obliquely 

 turned in, inner lip oblique, columella area rather large, smoky 

 brown, minutely granulated, interior of aperture light brown, 

 margin of the lip continuous across the spire. Length 7, breadth 

 5|, alt. 2>\ lines. 



Hab. Katow River, New Guinea, found 10 miles up the river 

 on the roots of trees. 



This species, when the epidermis is removed, shows fine violet 

 reticulated markings very much after the style of Catillus porcel- 

 lanus, Linn. 



