370 Mr. G. B. Sowerby o)i Tioo new 



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

 Venezuela, and separated from the Brazilian P. ceruginosa on 

 account of the absence of metallic lustre. This may be traced, 

 however, in some specimens which cannot be distinguished 

 from imperfectly developed Brazilian individuals, so that in 

 the absence of otlier 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 spinoJce, Burm., is a 

 distinct species, as I have ascertained by comparison of 

 original specimens of both in M. 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 panamensis, sp. n. 



Breviter cyliudricus, pallidc testaceus, capita omnino palHdo, pro- 

 thoracis diiabus maciilis triangularibus et duobus punctis iiicon- 

 spicuis lateralibus vagc fuscis, clytrorum marginibus interioribus 

 fere usque ad humeros infuscatis ; capita rugose punctato, clypeo 

 subtruncato, lateribus parallelis ; prothoraca subtiliter punctato, 

 angulis anticis acutis, postiois regulariter curvatis ; scutello brevi, 

 peutagonali ; elytris pone humeros latitudine ad thoracis medii 

 latitu-dinem aiqualibus, undique subtilissirae punctatis, et grossius 

 lineato-puuctatis, baud striatis ; pygidio lovitcr punctato. 



Long. 11 mm, 



JIab. Panama, La Chorrera. 



XLI. — Descriptions of Two new Species of Shells from 

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



Buccinum striatissimum^ sp. n. 



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

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

 anfraclus circiter 8-U, validc convcxi, I'otundati, sutura impressa 

 sejuncti, spiraliter densissimc inciso-striati, striis exiraia undu- 

 latis ; anfractus lUtinius supra tumidus, infra leviter contractus ; 

 apertura subovalis, alba, canali lato, brcvissimo ; columella antice 

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

 labrum crassum, leviter reficxum, postice liuvissime sinuatum. 

 Operculum typicum. 



Long. 115, diam. G5 ; apertura longa 40, lata 2(5 mm. 



Ilah. Kumihama, Tango, Japan. 



