106 PKOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Merria cancellata, Gray: Zool. Beechey's Yoy., p. 137. 



Leucotis cancellata, Swainson : Treatise on Malac, p. 346. 



Narica cancellata, Kecluz : Mag. de Zool., 1845, p. 17, pi. cxix ; 



Bergh, Verhandl. zool.-botan. Gesell., 1896, vol. xlvi, p. 202, 



pis. ii, iii (anatomy). 

 Vanikoro cancellata, Sowerby : Conch. Icon., vol. xx, pi. i, figs. \a, \h ; 



Thes. Conch., vol. v, p. 167, pi. 482, fig. 7; H. & A. Adams, 



Genera Moll., vol. iii, pi. xli, figs. 5-56'; Tryon, Man. Conch., 



vol. viii, p. 67, pi. xxix, figs. 60, 61. 

 Narica Quoyi, Recluz : Proc. Zool. Soc, 1843, p. 137. 

 Narica Petitiana, Becluz : Proc. Zool. Soc, 1843, p. 138; Bev. 



Zool., 1844, p. 5 ; Mag. de Zool., 1845, p. 24, pis. cxxii, cxxiii. 

 Vanikoro Petitiana, Sowerby: Conch. Icon., fig. 5; Thes. Conch., fig. 18 



(both figures with sj)ire too elevated); Tryon, Man. Conch., 



vol. viii, p. 68, pi. xxix, fig. 64. 

 Narica cidaris, Recluz: Proc. Zool. Soc, 1843, p. 137; Bev. Zool., 



1844, p. 5 ; Mag. de Zool., 1845, p. 20, pi. cxxi, fig. 1. 

 Vanikoro cidaris, Sowerby: Conch. Icon., fig. 4; Thes. Conch., vol. v, 



p. 167, pi. 482, fig. 10. 



Hah. — Oomaga Beef and Lizard Island, North Australia, Borneo, 

 Andaman Is., Seychelles Is., Aden (Brit. Mus.) ; Vanikoro I. (Quoy & 

 Gairaard) ; Philippine Is. and Lord Hood I. (Cuming) ; Mauritius 

 (Lienard, Martens) ; Nicobar Is. (Chemnitz); Persian Gulf and Karachi 

 (Melvill & Standen). 



I fail to distinguish any specific differences in Petitiana and cidaris 

 of Petit. Vanikoro cancellata is the largest species of the genus, and 

 characterized by the reticulated surface and very large aperture. 

 It has been figured by H. & A. Adams, who give original figures of 

 the animal and operculum, by Quoy & Gaimard, who first described 

 the anatomy, and whose figure of the animal has been reproduced by 

 Becluz, Fischer, Tryon, Gray, Kefersteiu, and possibly others. The 

 shell has been figured over and over again in manuals and elementary 

 treatises, and the more detailed anatomy has been given by Bergh. 

 The latter does not, however, venture an opinion upon the systematic 

 position of the genus, but is content with merely referring to the place 

 assigned to it by Fischer.^ 



2. Vanikoro ligata (Recluz). B.M. 



Narica ligata, Becluz: P.Z.S., 1843, p. 138; Bev. Zool., 1844, 

 p. 5 ; Mag. de Zool., 1845, p. 22, pL cxxi, fig. 2. 



Vanikoro ligata, Sowerby : Conch. Icon., fig. 6 ; Thes. Conch., fig. 19 ; 

 Tryon, Man. Conch., fig. 65 only, copy of Sowerby's. 



Narica Peshayesiana, Becluz : * Proc. Zool. Soc, 1843, p. 138 ; Mag. 

 de Zool., 1845, p. 48, pi. exxx, figs, 1, 2. 



> Man. Conch., p. 761. 



2 Quoted by Melvill & Sykes from the Andaman Is. and by Angas from "Watson's 

 Bay, New South Wales. 



