370 Mr. G. B. Sowerby on Two new 



* P. aruginosa, L. It is a form occurring in Colombia and 

 Venezuela, and separated from the Brazilian P. aeruginosa on 

 a count of the absence of metallic lustre. This may l3e traced, 

 however, in some specimens which cannot be distinguished 

 from imperfectly developed Brazilian individuals, so that in 

 the absence of other differentiating characters it cannot be 

 regarded as specifically distinct. 



One further correction of the ' Biologia Centrali- Ameri- 

 cana ' must be made. The Central-American insect there 

 identified with the Colombian Geniates spinolce, Burm., is a 

 distinct species, as I have ascertained by comparison of 

 original specimens of botji in ]\1. Oberthiir's collection. A 

 series of the Panama form has been received from Mr. Dolby 

 Tylor, and it will avoid confusion to describe it here : — 



Geniates panamensi's, sp. n. 



Breviter cjliudricus, pallide testaccus, capite omnino pallido, pro- 

 thoracis duabus maculis triangularibus et duobus punctis incon- 

 spicuis lateralibus vage fuscis, clytrorum marginibus interioribus 

 t'ere iisquo ad humeros infuscatis ; capite rugose punctato, clyjjeo 

 subtruiicato, lateribus parallelis ; protborace subtiliter punctato, 

 angulis anticis acutis, posticis regulariter curvatis ; scutello brevi, 

 pentagonali ; elytris pone humeros latitudine ad thoracis medii 

 latitudinem aqualibus, undique subtilissime punctatis, et grossius 

 lineato-punctatis, baud striatis ; pygidio leviter puuctato. 



Long. 11 mm. 



Ilah. Panama, La Chorrera. 



XLI. — Descriptions of Tivo new Species of Shells from 

 Japan. By G. B. Sowerby, F.L.S. 



Buccinum striatissimum, sp. n. 



Testa ovato-coiiica, crassa, albida, epidermide pallida tenuissime 

 induta, spiraliter striata ; spira elongato-conica, acutiuscula ; 

 anfractus circiter 8-9, valide convcxi, rotundati, sutura impressa 

 sejuncti, spiraliter densissime inciso-striati, striis eximie undu- 

 latis ; anfractus ultimus supra tumidus, infra leviter contractus ; 

 apertura subovalis, alba, cauali lato, brevissimo ; columella antice 

 rectiuscula, postice obliqua, in medio arcuata, callo crasso induta ; 

 labrum crassum, leviter reflexum, postice lasvissime siuuatura. 

 Operculum typicum. 



Long. 115, diam. G5 ; apertura longa 40, lata 26 mm. 



Ilab. Kumihama, Tango, Japan. 



