468 Zoological Society. 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



July 11, 1843. — Lovell Reeve, Esq., in the Chair. 

 " Descriptions of new species of Niicula, from the collections of 

 Sir Edward Belcher, C.B., and Hugh Cuming, Esq.," by Mr. Hinds, 

 were read. 



NucuLA CuMiNGii. Nuc. tcstcl elUjiticd, tenui, epidermide virente 

 indutd, antice abbreviatd, subrostratd, postice elongatd, rotundatd ; 

 margine ventrali acuto, antice subemarginato, dorsali postico, pro- 

 minulo ; cardine antice dentibus 6, postice 19-20. Long. 11; 

 lat. 4; alt. 7^ lin. 

 Hab. The Asiatic analogue of N. obliqua, and is widely diffused 

 over the seas of the Indian Archipelago. It has been obtained at 

 New Guinea ; Straits of Macassar ; Bolinao, San Nicholas, Sual and 

 Bassey in the Philippines ; Singapore ; and Straits of Malacca ; in a 

 depth of water varying from seven to twenty-three fathoms, on a 

 floor of mud and sandy mud. 

 Cab. Belcher et Cuming. 



It is distinguished from N. obliqua by the disposition to rostration 

 of the anterior limb, prominent dorsal margin, slight indentation at 

 the anterior part of the ventral margin, and larger size. 



NucuLA MiTRALis. Nuc. tcstd conoidali, soliduld, epidermide fused 

 indutd, antice brevissime abbreviatd, rectd; margine dorsali posticd 

 inclinatd, marginibus ventralibus crenulatis; cardine antice dentibus 

 10, postice 28-30. Long. 5^ ; lat. 3 ; alt. 4 lin. 

 Hab. Straits of Malacca ; from seventeen fathoms, mud. 

 Cab. Belcher. 



The very contracted and straight anterior margin of this shell gives 

 it the shape of a mitre, or other similar elevated head-dress. 



NucuLA PULCHRA. Nuc. testd ellipticd, solidd, sulcatd, interstitiis 

 transversim striatis ; marginibus ventralibus crenulatis; cardine 

 antice dentibus 9, postice 27-29. Long. 7 ; lat. 4 ; alt. 5^ lin. 

 Hab. L'Agulhas Bank, Cape of Good Hope ; from seventy fathoms. 

 Cab. Belcher. 



NucuLA DivARiCATA. Nuc. tcstd clUpticd, antic^ excavatd, subacu- 

 minatd, postice rotundatd ; lineis divaricatis, striatd ; marginibus 

 ventralibus crenulatis; cardine antice dentibus 7, postice 22-24. 

 Long. 5 ; lat. 2^ ; alt. 4 lin. 

 Hab. China Sea; from eighty-four fathoms. 

 Cab. Belcher. 



A single valve only was brought up from this great depth, and 

 presents a character in its sculpture which has not hitherto been 

 met with in any recent species, but which is also found in the fol- 

 lowing. This peculiarity consists of the presence of lines diverging 

 from an angle near the middle of each valve. It however occurs in 

 an English fossil, N. Cobboldice. 



NucuLA CASTRENSis. Nuc. tcstd clUpticd, aiiticl rotundatd, epider- 

 mide olivaced indutd; lineis divaricatis; marginibus ventralibus 



