1863.] MR. A. ADAMS ON NEW MOLLUSCA. 507 



The shell is broader than high, rather thin, and of a pale yellowish 

 flesh-colour, with fulvous blotches and flammules. The whorls are 

 transversely ridged and angulate at the sutures, and the interior of 

 the umbilicus is white. Mr. Cuming possesses but a single speci- 

 men from Tasmania. 



2. MODELIA GUTTATA, A. Ad. 



M. testa turbinato-conica, umhilico callo obtecto, spira elata, 

 carnicolore, aureo tincta, guttulis rubidis conspersim depicta ; 

 suturis canaliculatis, profundis ; anfractibus convexis, cingulis 

 granorum moniliformibus subdistantibus instructis, grants dis- 

 junctis, interstitiis longitudinaliter oblique striatis, ad suturas 

 serie tuberculorum squamiformium ornatis : apertura circulari, 

 intus sulcata ; labio excavato, callo tenui lato umbilicum te- 

 gente. 



Hab. Tatiyama. 



The necklace-like rows of granules are separate from each other ; 

 the whole shell is adorned with reddish points, and has a golden 

 aspect Uke some species of Turcica and Ziziphinus. 



I 3. Leiopyrga cingulata, A. Ad. 



L. testa pyramidato-turbinata, anguste perforata, tenui, nitida, 

 purpurascente, ad basin albida, serie macularum rufescentium 

 ornata ; anfractibus 4, planis, cingulis elevatis distantibus (3 

 in anfractu ultimo) instructis ; basi coticentrice valde lirata ; 

 regione umbilicali cingulo elato circumcincta. 

 Hab. Port Essington {Coll. Cuming.). 



This is a second and very distinct species of a genus proposed by 

 my brother and myself under the name of Leiopyrga. The present 

 species has the whorls encircled with three transverse ridges, and 

 there is a conspicuous ridge round the region of the umbilicus. 



4. Turcica imperialis, A. Ad. 



T. testa conoidea, spira acuminata, basi obliqua producta ; solida, 

 imperforata, fulvicanti-rufo variegata, cingulis transversis cas- 

 taneo articulatis ornata ; anfractibus convexiusculia, lirulis 

 monilifortnibus, lineis elevatis transversis alternantibus et cin- 

 gulo valido noduloso ad peripheriam ornatis, interstitiis oblique 

 striatis, suturis canaliculatis, superne serie granulorum in- 

 structis ; anfractu ultimo cingulo granorum in serie duplici 

 dispositorum munito ; basi convexa, cingulis granulosis concen- 

 tricis instructa: apertura obliqua, subcirculari ; labio tortuoso, 

 antice in dentem desinente; labro margine integro, subexpanso, 

 intus IcBvi. 

 Hab. Tsusaki, 37 fathoms, west coast of Japan. 

 This fine species is more elevated than T. monilifera ; the base is 



more oblique, the aperture much more produced, and the golden 



nacreous appearance is absent. 



