288 192 



and Koh Kut, 6 fathoms, clay mixed with sand (1). W. of Koh Kut, 15 fathoms, 

 mud (2). Off Koh Kut, 5 fathoms (fragments). 



Long. 26 mm. (several of the fragments have belonged to larger specimens). 



Distribution: — Singapore (Danish Exp. to Siam, 2 specimens), Nicobars, 

 Ceylon, Mekran Coast, Aden, Red Sea, Suez, Suez Canal. — Philippines, Japan {A. 

 flexuosa), Borneo, Flores. 



The species here under consideration varies considerably, especiallj' with 

 regard to the form and the development of the rostrum; and many species of the 

 gen. Anatina will certainly in the course of time be withdrawn owing to their 

 having been based upon entirely individual characters. The greater part of the 

 specimens from the Gulf of Siam resemble most nearly Reeve's figure of A. eximia. 



Fam. Clavagellidae. 



Brechites dichotomus, Chenu. 



Asperyilliim dicbotomum, Chenu, Illustrations couchvliologiques il813- 45), Aspergillum, p. 3, pi. 2, fig. 6. 

 Brechites dichotomus, — H. & A. Adams, Genera of rec. Moll., II, 1858, p. 339. 



Aspergillnm dichotomutn, — Reeve, Conchol. icon., XII, ISOO, Aspergillum. Sp. 9. 

 Penicillus dichotoma, — Tryox, Proc. Acad. Nat. Sc. Philadelphia, 1861, p. 59, No. 2. 



Aspergillum dicholomum, — Clessin in Martini u. Chemnitz, Conchyl. Cabin., XI Bd., 4 Abth. A, 



p. 30, No. 9, pi. 12, fig. 2. 



Koh Lan, 30 fathoms, mud (1). Koh Chuen, 30 fathoms (3). N. of Koh Kahdat, 

 4—5 fathoms, coarse sand (1). Koh Kahdat, 1 fathom, sand (1). S. of Koh Mak, 

 5-6 fathoms (2). 



All the specimens collected were fragmentary. 



Distribution: — Singapore (Cuming), Gulf of Manaar (Thurston). 



Tryon (Ioc. cit.), undoubtedly correctly, considers B. disjunctus, Desh., to be 

 synonymous with B. dichotomus, but several other of those species which have 

 been established ought probably also to be abolished; thus Gray^ has united 

 under the name of Penicillus aquaria, Burr. : — Aspergillum dichotomum, Chenu, 

 semißmbriatum, Chenu, sparsum, Sow., javaniim. Gray (non Lam.). 



Order Septibranchiata. 



Fam. Cuspidariidae. 



Neaera Singaporensis, Hinds. 



Neœra Singaporensis, Hinds, Proc. Zool. Soc. London, XI, 1843, p. 77. 



W. of Koh Chuen, soft clay and mud ('/a). W. of Koh Chang, 30 fathoms (1/2). 

 Koh Kahdat (''/s). N. of Koh Kut, 10 fathoms, mud (%). Between Koh Kahdat 



1 Proc. Zool. Soc. London, 1858, p. 312. 



