collected in Japanese Seas. Ill 



lsevis; apertura oblique subquadrata, intus margaritacea ; columella 

 leviter incrassata, callo tenui labro juncta. 

 Diam. max. 8 mill., diam. min. 7, alt. 5. 



Hah. Gulf of Yado, lat. 35° 35' N., long. 139° 48' E., 6 to 

 25 fathoms, soft mud and hard sand. 



The keel which encircles the body-whorl runs up the spire 

 in the deep suture. Within the umbilicus, and adjacent to the 

 large granular liration which surrounds it, there is another, 

 but much finer one. 



81. Trochus (Gibbula) yamadanus, sp. nov. 



Testa ovato-conica, sordide albida, Kris lilaceo-fusco aliquanto flam- 

 nrulatim tessellatis picta, leviter perforata ; anfractus 5, convexi, 

 sutura subprofunda sejuucti, liris tenuibus spiralibus lilaceo-fusco 

 articulatis (in anfr. pcnultimo 5-6, in ultimo circiter 20) succincti, 

 hie illic incrementi lineis obliquis insculpti ; apertura circularis, 

 longitudinis totius g sequans, margaritacea ; columella paululum 

 incrassata, labro callo tenui juncta. 



Operculum corneum. 



Long. G mill., diam. 4i. 



Hah. Yamada Harbour, lat. 39° 32' N., long. 141° 53' E., 

 7 fathoms, sand and broken shells. 



The elongate brownish-lilac spots on the lirations are situated 

 somewhat irregularly underneath each other, so as to form 

 flammulations. 



82. Trochus (Gibbula) corallinus, sp. nov. 



Testa corallino -rubra, minima, orbicularis, depressiuscula, profunde 

 sed anguste umbilicata ; anfractus 4, convexi, liris spiralibus 

 confertis subgranulosis (in anfr. superioribus 4-5, in ultimo 

 circiter 20) cincti, striisque oblique longitudinalibus distantibus 

 insculpti ; umbilicus profundus, lira magna, striis longitudinalibus 

 transversim sulcata, succinctus ; apertura circularis, intus tenuiter 

 margaritacea. 



Diam. max. 3, diam. min. 21, axis 2|. 



Hob. Japan. 



This is a very pretty little shell with convex whorls, which 

 are spirally striated, the interstitial lirations being somewhat 

 granulous. This appearance is produced by their being cut 

 across by rather distant striations. 



83. Trochus (Gibbula) redimitus, Gould, Otia Conch, p. 159. 



Testa depressa, orbicularis, anguste perforata, viridi-margaritacea, 

 prismatica, liris spiralibus nigro articulatis ornata, ad apicem 



