78 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



15. — RlNGICULA ARCTATA. 



Ringicula arctata, Gould, Otia, p. 122. 



Hah. Cape York, North Australia, 11 fathoms, sandy mud ; 

 Tort Jackson, 10, 15 fathoms, mud. (Brazier.) Hong Kong. 

 (Gould.) 



In this species the aperture is auricular, the outer lip thickened 

 and the whorls' finely, distantly striated at the lower part. 



16. — Ringicula granmnosa. 



Ringicula grandinosa, Hinds, Proc. Zool. Soc, London, 1844, 

 p. 96. 



Hah. Off Katow, New Guinea, 8 fathoms, sandy mud and 

 coral ; Phillipine Islands. (Cuming.) 



This species is smooth, the last whorl, large, of a squarish form, 

 full and rounded. The upper portion of the aperture is strongly 

 denticulated. 



17. — Ringicula Angasi. 



Ringicula Australis, Crosse, Journal de Conch., 1865, p. 44, pi. 

 2, fig. 5. 



Hah. Darnley Island, Torres Straits, 25, 30 fathoms, sandy 

 mud. Anse Vata, near Noumea, New Caledonia, found in shell- 

 sand after a gale. (Brazier.) Head of Spencer's Gulf, in shell- 

 sand. (G. F. Angas.) 



I have changed the specific name as above. Mr. Hinds having 

 described in the Pro. Zool. Soc, 1844, p. 97, a species of 

 Ringicula under the specific name of Australis, from Port 

 Lincoln. The description of Mr. Crosse's specimen appears to 

 have been taken from a dead and worn shell. The living 

 specimens I obtained in Torres Straits have very minute spiral 

 lines on the last whorl. Specimens that are slightly worn don't 

 show them whatever. 



18. — Ringicula abyssicola n. sp. 



Shell thin, white, somewhat acuminate, whorls 4*, moderately 

 convex, opaque at the suture, smooth, last whorl large, encircled 

 below the centre with four transverse lines ; columella with two 



