smith: on the genus vanikoeo. 107 



VaniJcoro Deshayesmna, Sowerby : Conch. Icon., figs. \2a, h (too 



coarsely cancellated) ; Thes. Conch., vol. v, pi. 482, fig. 17 ; 



Tryon, Man. Conch., vol. viii, pi. xxix, fig. 69 (copy of Conch. 



Icon.). 

 Narica Blainvillemin, Recluz : Proc. Zool. Soc, 1843, p. 141 ; Mag. 



de Zool., 1845, p. 53, pi. cxxxi, fig. 2. 

 VanihoTo Blainvilleana, Tryon: pi. xxix, fig. 71 (after llecluz). 

 VaniJcoro helicoidea, Sow. \no7i Eecluz) : Conch. Icon., fig. 19; Thes. 



Conch., fig. 20 ; Tryon, fig. 68. 

 Hah. — Philippines {ligata, type in B.M.); Philippines, Borneo, 

 N.W. Australia {I)eshayesiana^ type in B.M.) ; Moluccas for 

 Blainvilleana. 



With this species Tryon has united V. cidaris, Petitiana, helicoidea, 

 plicata, Beshayesiana, Blainvilleana, Souleyetiana, and delicata. The 

 absurdity of this ' lumping ' may be appreciated by comparing the 

 figures in the Mag. de Zool. of V. helicoidea and V. plicata. I should 

 mention, however, that his figure of helicoidea, copied from Sowerby, 

 has nothing Avhatever to do with the true helicoidea of Le Guillou, 

 which is very badly figured by Sowerby and Tryon under the name 

 Souleyetiana, llecluz, a very difPerent species. I have already pointed 

 out that V. cidaris and Petitiana belong to V. cancellata. I am 

 inclined, with Tryon, to consider Beshayesiana the same as ligata, 

 and N. Blainvilleana appears to be merely the young state of the 

 same species. The true helicoidea is also like ligata in some respects, 

 but more narrowly umbilicated, and with the plications almost obsolete 

 on the whole of the body-whorl. 



3. Vanikoko helicoidea (Le Guillou). B.M. 



Sigaretus helicoideus, Le Guillou: Eev. Zool., 1842, p. 105. 



Narica helicoidea, Recluz : Mag. de Zool., 1845, p. 51, pi. cxxxi, 



fig- 1- . . 



Non Vamkoro helicoidea, Qowerhj : Conch. Icon., fig. 19 ; Thes. Conch., 



fig. 20 ; Tryon, fig. 68 = ligata. 



VaniJcoro Souleyetiana, Sowerby {no7i llecluz): Conch, Icon., fig. 11 ; 



Thes. Conch., fig. 21, probably ; Tryon, fig. 68 (copy of Sowerby). 



Hah. — Amboina (Le Guillou). 



We have in the Museum the actual shell figured by Sowerby as 



V. helicoidea, and it is undoubtedly a specimen of ligata. The true 



V. Souleyetiana is altogether a very distinct species, quite unlike 



the shell figured by Sowerby. 



4. Yanikoho plicata (llecluz). B.M. 



Narica plicata, Recluz: Rev. Zool., 1844, p. 7; Mag. de Zool., 1845, 

 p. 40, pi. cxxviii, fig. 1. 



Hah. — Ilias I., Philippines. Type in B.M. 



This species is very distinct from the shell figured by Sowerby in 

 the Conch. Icon., fig. 3, and the Thes, Conch., fig. 9, and copied by 

 Tryon, pi. xxix, fig. 67. A comparison with Recluz's figure shows 

 at a glance the great difference, Sowerby describes his slioll as 



