72 MR. A. ADAMS ON THE LIOTIIN^ OF JAPAN. [Feb. 10, 



the foot is provided with the lateral filaments peculiar to the Trochus 

 family ; and Clark has also shown the genus Adeorbis to be a true 

 Trochidian. 



The little Japanese shell named Cynisca japonica by me, and 

 Liotia pilula by Dunker, I now consider to be a true Collonia. 



1. Genus Liotia, Gray. 



< 1. Liotia clathrata. Reeve. 



Delphinula clathrata, Reeve, Conch. Icon. sp. 21. 

 Hab. Seto-Uchi (Akasi, 15 fathoms). 



2. Liotia armata, A. Ad., Annals, 1861. 



Hab, Korea Strait, 46 fathoms; Mino-Sima, 63 fathoms. 



3. Liotia syderea, Reeve. 



Delphinula syderea, Reeve, Conch. Icon. sp. 23. 

 Hab. Seto-Uchi. 



4. Liotia d^dala, A. Ad. 



L. testa crassa, complanata, discoidea, alba, late umbilicata, pul- 

 cherrime radiatitn striata ; aiifractibus 5\, planiusculis, bica- 

 rinatis, carinis validis subcrenulatis, anfractu ultimo entice 

 dilatato t7-icarinatn, interstitiis obsolete clathratis, carina sii- 

 periore validiore, media p>ostice evanida, inferiore crenata con- 

 spicua; umbilico magno, perspectivo; margine corrugato-denti- 

 culato; apertura circulari; peritremate continue, extus varicose. 

 Hab. Gotto, 48 fathoms ; 0-Sima. 



This is a very elegantly formed species, with the whorls exquisitely 

 sculptured. In many of its characters it seems to approach the 

 Adeorbis verreauxii of M. Fischer ; but it is a true Liotia, having a 

 circular continuous aperture, with the peritreme varicose externally. 

 In form and general characters, however, it most resembles Delphi- 

 nula discoidea, Reeve, but the keels are not nodose. 



5. Liotia tantilla, A. Ad. 



L. testa parva, crassa, discoidea, profunde umbilicata, sordide 

 alba ; anfractibiis 3f , convexiusculis, concentrice sulcatis, sulcis 

 regularibus confertis, anfractu ultimo ad peripheriam rotundato, 

 antice dilatato ; umbilico mediocri, perspective ; apertura cir- 

 culari ; peritremate continue, extus varicose. 

 Hab. Gotto Islands, 71 fathoms. 



A very neatly formed little species, most nearly resembling L. 

 australis, Kien., which, however, is a much larger species, an ex- 

 ample of which I have recently examined in the collection of Mr. 

 Cuming. Kiener's figure, copied by Reeve and Philippi in their 

 Monographs, is execrable. 



