110 Mr. E. A. Smith on Gasteropoda 



77. Liotia semiclathratula y var., Schrenck. 



Liotia semiclathratula, Schrenck, Bull. Acad. Sci. St. Petersb. iv. p. 410 ; 

 Reisen im Amurlande, p. 370, pi. xvi. f. 16-25. 



Hah. Toba Harbour, lat. 34°30'N., long. 136° 50' E., at a 

 depth of 9 fathoms, among sand and broken shells. 



The single specimen which appears to belong to this species 

 is a dead shell. It differs from the typical form in having the 

 longitudinal lirations produced beyond the periphery of the 

 body-whorl (except towards the labrum) to the umbilicus, and 

 giving the base of the shell the same cancellated aspect as the 

 upper parts. 



78. Trochus rota, Dunker. 



Trochus rota, Dunker, Malak. Bl. 1860, vol. vi. p. 238; Moll. Japonica, 



p. 21, pi. iii. f. 4; Lischke, Japan. Meer.-Conch. pi. vi. f. 20, 21. 

 Polydonta gloriosum, Gould, Otia Conch, p. 158. 



Hah. Ooshima. 



A single young specimen which I have identified with this 

 species has the spiral lirations of the base, which is white, 

 dotted with pink. Dunker does not mention the colour of this 

 part of the shell. T. hicrenatus, Gould (syn. histrio, Reeve), 

 is very similar in general aspect. 



79. Trochus (Gihhula) fulgens, Gould, Otia Conch, p. 160. 



Trochus iridescens, Schrenck, Reisen im Amurlande, p. 356, pi. xv. 

 f. 19-24. 



Hah. Off Cape Blunt, lat. 41° 41' N., long. 141° E., 35 

 fathoms. 



In one of the specimens which I associate with this species 

 the three principal keels on the body-whorl are articulated 

 with brownish purple and whitish dots ; and below the suture 

 there are some short brownish-purple flammulations. Schrenck 

 mentions this articulated painting on p. 357, but not in the 

 diagnosis on the preceding page. 



80. Trochus (Gihhula) japontcus, sp. nov. 



Trochus japonicus, A. Adams, MS. in Mus. Cuming. 



Testa late breviterque conica, valde perforata, albida maculis punc- 

 tisque fuscis variegata, ad basim alba ; anfractus 6, planiusculi, 

 liris spiralibus granosis (infima in sutura profunda sita) cincti, et 

 striis obliquis insculpti; anfr. ultimus supra leviter convexiusculus, 

 medio acute angulatus et carinatus, infra carinam planus, lirisque 

 circularibus granularibus circiter 13 (una circa umbilicum quam 

 caeteris majore) ; umbilicus profundus, usque ad apicem attingens, 



