﻿1874.] G. and H. Ncvill— 0/i New Marine Mollusca. 29 



PECTUNCULrS PLANATUS, n. sp., PI. I. Fig. 16. 



Shell flat, orbicular, umbonal margin perfectly straight and much pro- 

 duced ; white, mottled and variegated with reddish-brown, longitudinally rib- 

 bed, ribs about 24, each one divided by adeep groove in the centre, throughout 

 closely, almost fimbriately, decussated with crowded transverse strias ; mar- 

 gin deeply incised ; teeth 14 on the posterior and 11 on the anterior side ; 

 interior mottled with brown, distantly grooved. I know of no species at 

 all like this interesting Pecten-like species, perhaps it most resembles Feet, 

 vitreus, Lam. 



Long. 14 Mil., Diam. 14^ Mil., Alt. 4 Mil. 



Andaman s. 



Teiton [Guttuenium] oeientalis, n. sp. 



This beautiful species is well figured by Reeve, PI. XI, species 38, though 

 it seems almost incredible that he could have confused it with the South 

 American Triton gihhosus, Brod., correctly figured later on in the Iconogra- 

 phy, PI. XIV, species 38 b. and c. The outer lip and four varices are very 

 broadly and flatly expanded, the canal is more produced than in the true 

 T. gihhosus and slightl}^ umbilicated, as in T. lahiosus, Wood ; the columellar 

 margin and interior of the aperture are white, the sculpture and epidermis 

 are similar to those of T. gemmatus, Rv. ; operculum normal. 



Long. 33 Mil., Diam. 20 Mil. 



Four living specimens were dredged by Mr. Wood-Mason at the Anda- 

 man s. 



We take this opportunity to point out that the shell described by 

 Sowerby in the Thesaurus, PL 328, Figs. 537-8, from the Red Sea, as 

 Cyp^aea Maeandrei, is a mere variety of G. BecTcii, Gaskoin from the same 

 locality. 



Pease having described, Journ. American Conch, for 1867, a Mitra 

 {Nehularia) assimilis {verj doubtfully distinct from Nehularia caeligena, 

 Rv.), we propose to change to Mitra {Turriculd) Garrettii, the shell de- 

 scribed as Mitra assimilis by Garrett, Proc. Zool. Soc. for 1872. 



The shell described by Lienard as Leptoconclms Bohillardi, Journ. de 

 Conchil. for 1870, p. 305, and figured by ourselves in the Society's Journal 

 for 1871, PI. I, fig. 1, is Goralliohia Jlmhriatus, A. Ad. ; we are indebted to Mr. 

 Henry Adams for pointing out the probability of the above identification 

 and for giving us an opportunity of examining a typical specimen. 



