Bay of Bengal and the Arabian Sea. 247 



From some broken fragments it is evident that this species 

 attains larger dimensions than those here given of a specimen 

 consisting of twelve whorls. It is rather less slender than 

 S. suhcasta and the laraellaj become more numerous instead 

 of fewer as the shell increases. The spiral strise are a little 

 coarser in the present species. 



25. Astralium hathyrhaphe. 



Tosta imperforata, turbinata, lilacea, seriebus granulorum ornata, 

 ad suturam late et profunde canaliculata ; spira conioa, ad apicem 

 alba, obtusa, planata ; anfractus 9, apicales quiuque supra planu- 

 lati, cseteri ad latera declives, plani, lineis increment! tenuibus 

 obliquis sculpti, supra ad suturam late et profuude caualiculati, 

 seriebus granulorum 4-5 (quarum suprema maxima, infiraa 

 squamata) cincti, ultimus convexus, infra seriem squamatam ad 

 peripheriam sitam, seriebus granulorum 9-10 pallidiorum ornatus, 

 inter granula purpureo punctatus ; apertura irregulariter rotun- 

 data, iutus lineis iutrantibus quasi sulcata ; Jabrum leviter expan- 

 sum ; columella incrassata, callo expanse labro juncto induta. 



Diam. maj. 34 millim., min. 29 ; alt. 33. Operculum rotunde ovatum, 

 convexum, crassum, album, olivaceo tinctum, fere Iseve, concen- 

 trice obsolete sulcatum. 



Hah. Station 218, N. Maldive Atoll, in 210 fath. 



This species, of which only a single specimen was obtained, 

 is most remarkable on account of the deep broad canaliculation 

 beneath the suture. The periphery, instead of being marked 

 by a row of granules, is formed of a squamose keel which is 

 spirally irregularly striated. It ascends the spire above the 

 sutural furrow, and between it and the suture there is a series 

 of very small white granules. Of the rows of granules upon 

 the lower half of the body-whorl, the third from the periphery 

 is a little larger than the first and second and much larger 

 than those below. Both above and below this third row a 

 few spiral elevated lines are noticeable. The aperture, 

 although quite smooth within, has the appearance of being 

 sulcated, the pseudo-sulci corresponding to the rows of 

 granules. 



26. Tiirho [Ca7xtrainea7) incoloratus. 



Testa parva, turbinata, imperforata, alba; anfractus quinque,celeriter 

 accrescentes, convexiuscuh, superiores liris spiralibus 3-4 cincti, 

 ultimus et penult. I'ere Jajves, supra prope suturam oblique nodose 

 plicati, liueisque iucreraenti obliquis striisque spiralibus sub- 

 obsoletis sculpti ; apertura leviter obliqua, subrotundata, albo- 



