102 



1865. Lucina dentifera Vaillant, Journ. ConchylioL, XIII, p. 116. 



1870. Lucina dentifera Mac Andrew, Ann. Mag. Nat. Hist., (4) VI, p. 447. 



1884. Lucina dentifera Grasset, Ind. Test. Viv., p. 278. 



1886. Lucina dentifera Cooke, Ann. Mag. Nat. Hist., (5) XVIII, p. 98. 



1890. Lucina dentifera Paetel, Cat. Conch. Samm., III, p. 125. 



1901. Lucina dentifera Sturany, Denkschr. Kais. Akad. Wiss. Wien, Math. Nat., LXIX, p. 284. 



1902. Lucina dentifera Shopland, Proc. Malacol. Soc. London, V, p. 178. 

 1904. Lucina dentifera Smith, Ann. Mag. Nat. Hist., (7) XIV, p. 10. 



1906. Lucina dentifera Melvill & Standen, Proc. Zool. Soc. London, p. 814. 



1906. Lucina dentifera Smith, Ann. Mag. Nat. Hist., (7) XVIII, p. 257. 



1916. Phacoides dentifera Lamy, Bull. Mus. d'Hist. Nat. Paris, XXII, p. 153. 



1920. Pliacoides dentifer Lamy, Journ. ConchylioL, LXV, p. 179. 



The spécimens, which I refer to this species, are ail young shells. They agrée with the 

 description of the species in ail respects except that the lamellae are not so serrated as shown 

 in Reeve's figures. 



Distribution : — D. [D.) dentifera was described from the Red Sea, and has since been 

 recorded from various places in the Indian Océan and the Persian Gulf. 



The "Siboga" shells referred to this species were collected in the Madura Strait (St. 2). 



2. Dentiluciiia [Dentihtcinà) bengalensis (Smith). 



1894. Lucina bengalensis Smith, Ann. Mag. Nat. Hist., (6) XIV, p. 171, pi. V, figs. i, 2. 



1897. Lucina bengalensis Smith, lUustr. Zool. "Investigator", pi. II, figs. 4, \a. 



1904. Lucina bengalensis Smith, Ann. Mag. Nat. Hist., (7) XIV, p. 10. 



1906. Lucina bengalensis Smith, Ann. Mag. Nat. Hist., (7) XVIII, p. 257. 



A single spécimen brought up in a deep-sea trawl at St. 1 7 agrées closely with spécimens 

 of D. {D.) bengalensis in the Indian Muséum, Calcutta and the British Muséum (Nat. Hist.), 

 London. The "Siboga" shell is, however, about i^o times the size of the type of the species: 

 its measurements are: — length 53 mm., height 44 mm., diameter 26 mm. The concentric lamellae 

 are a little better developed than on the type-shell. 



Distribution : - — D. [D.) bengalensis was described from shells dredged from off the Delta 

 of the Godaveri, Bay of Bengal. The species has since been taken at other stations in the 

 Bay of Bengal. 



The "Siboga" shell was brought up in a deep-sea trawl at St. 17 (7°28'.5 S., ii5°28'E., 

 1060 mètres). 



3. Dentilucina {Dentilucind) inanis sp. nov. (Plate V, figs. 9, 10). 



Dentiliicina [Dentiliuina^ inanis is closely allied to D. [D.) pamela (Melvill & Standen '), 

 but the shell is more truncate anteriorly, less regularly curved posteriorly and along its ventral 

 border ; there is also a better developed posterior dorsal area demarcated by a radial dépression ; 

 and a somewhat less marked anterior area similarly separated. The surface sculpture consists 

 of lovv concentric laminae, better marked in young than in the adult examples. The species is 

 not very tumid and the lunule is not so well marked as in. D. [D). pamela. The shells are of 

 a dirty yellow colour ; the nacre is whitish. 



1) Melvii.l, J. C. (S; Standen, R. — Proc. Zool. Soc. London, p. 815, pi. LV, fig. 6 (1906). 



