208 MR. G. B. SOWERBY ON NEW SPECIES OF SHELLS. [Mar. 20, 



L. lata. Smith, Rep. on the Lamellibr. of the ' Challenger.' 

 L. fahriensis, Smith, il)i(l. 

 L, torresiana. Smith, ibid. 

 L. confusa. Smith, ibifl. 

 L. Inminifera, Smith, ibid. 



L. dunkeri, ^m\ih, =jnponicn, Diinker. not of A. Adams, Sowerby, 

 Conch. Icon. 18/2. 



Malletia angulata, sp. nov. (Plate XI. fig. 1.5.) 

 M. testa oblonga, compressiuscula, valde incequilatera, epirlermide 

 cornea, nitida induta ; antice breviuscula. postice elongata. 

 Margo dorsi posticus rectus angulatus, auriculafus. Margo 

 ventralis antice oblique arcuatus, postice sinuatus. Umbones 

 leviter prominenfes, acutiusculi. Cardine rectilineo, amjusto, 

 dentibus numoosis minutis inslructo. Ligamentum longum 

 ungustissimmn, nigro-fuscum. 

 Diam. antero-post. 26, umbono-marg. 14 millim. 

 Hub. Bay of Bengal, 200 fath. 



Of the few species known of this rare genus, the present is one of 

 the mo5t striking. It is distinguished from its congeners chiefly by 

 the remarkable sinuosity of the posterior side, forming an angular 

 auricle at the dorsal margin, and a broad lobe at the posterior 

 extremity. The hinge is the same as in other species of the genus. 



Cypr^a hungerfordi, sp. nov. (Plate XT. figs. 1-3.) 



C. testa pyriformi, solicla, lata, depressiuscula, politissima, in 

 parte dorsali griseo infemtptim trifasciata, maculis minutis, 

 pallidis, fuscis, confluentibus lentiginosa ; spira immersa, conca- 

 viuscvla, inconspicua ; luterihus talis, basibusque flavescetite 

 lacteis, maculis fuscis, numerosis, rotundatis, superne marginatis ; 

 basi concaviuscula ; viargine columellari 20, concoloribus; purvis, 

 tenniter productis, basalibus majoribus, obliquis, instructo ; 

 margine externa svperne incurvo, dentibus 24, brevibus, regu- 

 laribus munito. 

 Long. 3!), diam. 24, alt. 19 millim. 

 Hab. Japan ? 



This shell (which is in perfect condition) was purchased in Japan 

 some years ago by Dep.-Surgeon-General R. Hungerford, but he 

 had no guarantee that it was taken in Japanese waters, and, so far as 

 I know, no other specimen has been discovered. It is a species not 

 likely to be confounded with any other. It is pyriform but rather 

 depressed, and quite unlike C. ptjriformis ; the greyish bands 

 crossing the back give the idea of a young shell that has not got its 

 full colouring, but its sides are thickly enamelled, showing it to be 

 thoroughly adult. The spots bordering the lateral enamel are 

 unusually high towards the back of the shell, leaving the margins and 

 base of a plain cream-colour. 



CoLUMBELLA FTLBYi, sp. nov. (Plate XI. figs. 8, 9.) 



C. testa fusiformi, fitsca ; maculis albidis irregulariter aspersa ; 



