collected in Japanese Seas. 419 



18. Pleurotoina ( ?) 2^a^r?<eZ<'.v, sj). iiov. 



Testu elongata, fusiformis, turrita, rubro-fusca, circa aiifractuum 

 medium albo zonata ; aiifr. ultimus paululum infra medium zona 

 alba sceunda ornatus ; aufr. 121 medio aiigulati, longitudinaliter 

 tlexuosc obsolete plicati, jdicis superne leviter nodulosis, medio 

 nodulis majoribus et interne nodulis duobus aliis minoribus 

 munitis, filis spiralibus 10-12 tenuibus (iis nodulos conjungenti- 

 bus quam ceteris crassioribus) succincti, et incrementi lineis 

 striati ; aiifr. iiltimus liris transversis circiter 24 succinctus ; 

 apertura longitudinis totius ^ adajquans ; canalis brevis. 



Long. 27 mill., diam. 1\. 



Hah. Lat. 34° G' X., long. 136° 15' E., 11 fathoms. 



This is a very pretty species, and belongs to the same 

 group which includes P. Metcalfei^ Angas, and some others. 



19. Bela iessoensis, sp. nov. 



Testa ovato-fusiformis, sordide albida ; anfr. 6 convexi ; primi 2 

 Iffives, caiteri plicis longitudinalibus subacutis (in anfr. ultimo 14 

 flexuosis, infra medium sensim evanescentibus) instructi, et striis 

 confertis elevatis ( una quam ca^teris majore anfractuum medium 

 succingente, in ultimo obsoleta) inter et supra costas ornati ; 

 apertura ovato-oblonga, subangusta, longitudine spiram a?quans, 

 intus fuscescens ; columella laivis, alba, vix tortuosa ; labrum 

 tenue, superne leviter sinuatum ; canalis brevissimus, latiusculus, 

 aliquanto recurvus. 



Long. 15 mill., diam. 6^. 



Hah. South-east of Yesso, lat. 42° 58' N., long. 104° 24' E., 

 at a depth of 43 fathoms ; bottom, sand and mud. 



This very beautiful species is well characterized by its 

 convex whorls, which are neatly plicated longitudinally — and 

 especially by the close and fine spiral liration with which the 

 entire surface is ornamented, one lira larger than the rest 

 encirclins: the middle of each whorl. 



20. Miirex [Chicorens) adustus, Lamk. ; Conch. Icon. iii. f. 29 ; 

 Kiener, Coq. Viv. pi. 33. f. 1. 

 Murex despedus, A. Ad. Proc. Zool. Soc 1853, p. 72. 

 Hah. Ooshima. 



Having carefully compared the type of despectus witli spe- 

 cimens of Lamarck's species, I do not hesitate to place the 

 former as a synonym ; for I cannot trace any differences. 

 Supposing the locality " West Indies," quoted by Mr. Adams, 

 to be correct, then this is a remarkable instance of wide 

 geographical range. 



