1888.] Mtt. c;. n. sowkkby on nicvv si*i:cri;s ok shells. 207 



2. Dcsoriptions of sixteen new Species of Shells. 

 By G. B. SowisRBY, P.Z.S., F.L S. 



[Eeoeived February 6, 1888.] 



(Plate XL) 



Lima smithi, sp. uov. (Plate XL fig. 12.) 



L. testa suhoblique ovata, leviter in/lata, tenuis, alba ; costis circ. 40, 

 rotundatis, medioc7-iter elevatls, levissime undidutis instructa ; 

 area antica mediocriter elonyata, leviter excavata, rugoso-plicata ; 

 auricuiis anticis parvis, decUvibus, posticis magnis ; area car- 

 dinalis excavata. 

 Long. 6.'J, lat. 51 millim. 

 Tiab. Jaf)an. 



Resembling in form L. excavata, but very decidedly ribbed. The 

 auricles, cardinal area, and anterior lunula are much the same as In 

 the fiigantic Japanese species described by me in the Society's ' Pro- 

 ceedings ' for 1883 (L.yolialh), but that species is smooth, excepting 

 at the sides, and not so inflated. 



The size of the only specimen known of this interesting new species, 

 wliich forms part of our National Collection, is small as compared 

 with L. excavata ; but although it has much the look of a full-grown 

 shell, it is impossible to say that it might not attain to the size even 

 of L. goUalh. 1 have, however, no doubt that it is specifically 

 distinct. 



Lima concentrica, sp. nov. (Plate XI. fig. 20.) 

 L. testa rotimde flabelliformis, obliqua, lata, compressa, tenuiuscula, 

 subpellucida, ccendeo-nlba, concentrice fusco midtifasciata, 

 epidermide ferruginea induta ; laminis nuinerosis, concentricis, 

 parum elevatis, fusco anguste marginatis, et costis angustis 

 circ. 80, confer tissimis, complanatis, interruptis, subrugosis, 

 partim divaricatis, superne uttenuatis, interstiliisque minu- 

 tissime crenidatis et puncturatis sculptu ; area cardina/is 

 anyusta, mediocriter excavata ; auricuiis parviuscuiis, fere 

 (equalibus, anticis plicatis, rotunde injlexis ; pagina interna 

 nitida, cceruleo-alba, margine externo ndnute crenulata, tenuiter 

 fusco circumduta. 

 Long. 30, mnj. lat. 27 niiUirn. 

 Hub. Hongkong. 



A very distinct and characteristic species. It is broad and rather 

 flat ; the radiating ribs are very narrow and close-set, and the 

 interstices towards the umbones peculiarly punctured. The nume- 

 rous concentric lamince are but little raised, but they are rendered 

 conspicuous by being edged with brown. 



Since the publication of the monograph of the genus Lima in the 

 ' Conchologia Iconica,' the following species have been added : — 

 L. zenJandica, Sowb., Proc. Zool. Soc. 187(5, p. 754. 

 L. goliaih, Sowb., Proc. Zool. Soc. 1883, p. 30. 



15* 



