1862.] MR. W. H. PEASK ON NEW MARINE SHELLS. 241 



minute et irregularlter sqiiamatis : anfr. convexis, ad suturas 

 squamis prominentibus evectls ordlnatim ornatis : anfractu 

 ultimo parte inferiore basin versus contracto : rufescenti-fuscay 

 liris transversis super castas lutesaenti-fuscis, squamis albis : 

 apertura alba. 



Shell fusiform, turreted ; body-whorl somewhat veatricose, longi- 

 tudinally I'ibbed ; ribs seven or eight, transversely ridged ; ridges 

 somewhat distant, becoming nodulous on the longitudinal ribs ; inter- 

 stices finely ribbed, transversely and very finely striated longitudi- 

 nally, squamate, more particularly at the base of the body-whorl. 

 Whorls ornamented at the sutures with a row of prominent, erect, 

 squamate scales or spines ; lower part of last whorl contracted towards 

 the base. Colour reddish brown ; nodulous portion of the transverse 

 ridges yellowish white ; scales and spines white ; aperture white. 



Length 45, breadth 20 mill. 



PiSANIA STRIGATA. 



T, elongata, transversim costata; costis planiusculis, swperne sub- 

 angulatis, transversim interdum striatis ; striis irregularibus, 

 elevatis : anfr. 7-8, convexis, anfractu idtimo prope labrum in- 

 crassato : labro crenato, canali brevi : apertura longitudinis 

 dimidium testes hand aequans : castaneo-fusco et albo maculata 

 et fasciata, apertura alba. 



Shell elongate, transversely ribbed ; ribs depressed, regular, plane 

 and somewhat angulated at their upper edge, and sometimes marked 

 transversely with a few elevated striae or fine ribs. Whorls seven or 

 eight, convex ; the last with a prominent varix near the edge of the 

 outer lip ; edge of lip crenate ; canal short, slightly twisted ; aper- 

 ture less than one-half the length of the shell. Mottled and banded 

 with dark chestnut-brown and white ; grooves between the ribs dark 

 brown ; aperture white. 



Length 37, breadth 15 mill. 



Amphiperas semistriata. 



T. ovata, subgibbosa, extics intusque Candida, nitida, transversim 

 striata; striis undulatis, ad dorso evanidis ; labro lirato, liris 

 parvis ; columella rotundato-convexa : apertura flexuosa, canali 

 brevi. 



Shell ovate, somewhat gibbous, white, shining, transversely striated ; 

 striae undulated and obsolete on the back, somewhat roughened lon- 

 gitudinally by fine irregular striae ; ridges on outer lip small ; inner 

 lip roundly convex on base ; right margin slightly thickened ; aper- 

 ture flexuous, canal very short. 



Length 12|, breadth 7^ mill. 



Emarginula clathrata. 



T. ovata, alba, costis concentricis et radiantibus clathrata, in- 

 terstitiis profundis ; apice antico ; labro crenato. 



Proc. Zool. Soc— 1862, No. XVI. 



