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



violacea, poUia, zona externa transmeante et limbum attingente ; 

 peristoma cxpansiim ; margine dextro tenue, leviter rejiexum ; 

 columellari leviter incrassatum, rotunde reflexmn, umbilicum 

 partim obtigente. 

 Diam. 32, alt. 15, apert. long. 15, lat. 13 millim. 

 Hab. Mindanao. 



A species of very distinct cliaracter. The whole surface (excepting 

 that of the nuclear whorls) is covered with prickly granules, sur- 

 mounted by short, erect bristly hairs. Otherwise the shell is some- 

 what like H, succiHcta (H. Adams) of the Isle of Formosa, but with 

 a more depressed spire and ventricose base. 



A single specimen was brought by Dr. Hungerford from the 

 Island of Mindanao. The shell is in perfect condition. 



Helix cyclostremoides, sp. nov. (Plate XL fig. 14,) 



H. testa late et perspective umbilicata, depressa, sordide alba, ubique 

 corrvgata ; spira concavo-depressa ; anfractus 5, celeriter 

 ttccrescentes ; ^)?7»»' 2 lceves,fusco tincti ; cccteri concavi, carina 

 elevata sen'ulata marginati ; iiltirnus acute tricarinatus ; carina 

 mediona waxima. Jpertura hexagonalis ; peristoma acute tri- 

 anyulattim. 

 Diam. 11, alt. G millim. 

 Hab. M'tul, between Morocco and Mazagau. 

 A very remarkable little species submitted to me for description by 

 Mr. J. Ponsonby, who suggested the name " cyclostremoides " from 

 its resemblance to some of the species of the marine genus Cyclos- 

 trema. The three keels are very conspicuous, especially the centre 

 one. The whole surface of the shell is curiously corrugated. 



CythereaXCaryatis) hungerfordi, sp. nov. (Plate XI. fig. 4.) 



C. testa cordata, valde incequilaleralis, tenuis, leviter infiata, alba, 

 antice concentrice sulcata, deinde obscure irregnlariter rvgata. 

 Umbones prominentes, incurvati, subspirali. Margo dorsalis 

 unticus brevis, leviter urcuatits ; ^^csticus elongatus, declivis, vix 

 urcvatiis, obtuse angulatus ; ventralis arcuatus. Lunula lata, 

 vix impressa. Area jwstica eJongata, leviter concava. Liga- 

 mentum anguste elongatum. Denies cardinales valvce sinistra 

 duo, inaqiiales ; antico valde prominente, acutiusculo, postico 

 lato, lamellari, fossa lata et profunda, subtrigona diviso, fovea 

 excavnta antice et postice instructo. Cardo in valva dextra^ 

 dentibus duobus approximatis, acutissimis valde prominentibus, 

 antice lamina marginali an gulato- elevata, postice lamina obliqua, 

 elevata, sinuosa, partim divisa munitits ; profunde interfossatus. 



Diam. antero-post. 20, umbono-marg. 17, crass. 14 millim. 



Hab. Hongkong (Dep.-Surg.-Geu. Hungerford). 



A single specimen in j)erfect condition of this interesting species 

 was found by Dr. Hungerford at Hongkong, together with two 

 perfect specimens of a somevv'hat similar shell, with the same Iso- 

 eardia-\\ke incurved uniboes, which I found to be Arthur Adams's 

 Callocardia guttata (Ann. & Mag. Nat. Hist. 1864, ser. 3, xiii. 



