418 MR. E. A. SMITH ON SHELLS FROM ADEN. [JuDC 16, 



151. Crepidula (ERGiEA) WALSHT, Hermannseu. 



Flab. Ceylon and Singapore {Reeve); A^sab {Caramagna). 



1;")2. CALYPTRifiA (Galerus), sp. inc. 



A single specimen is all I have seen of this apparently new species. 

 It is much elevated, cap-shaped, dirty whitish externally and tinted 

 with purple inside, especially towards the apex. It is radiately ridged 

 and concentrically striated with wfivy lines of growth. The internal 

 process is small, slender, compressed, and placed on the side towards 

 which the apex inclines. 



l.")3. Amalthea acuta (Quoy & Gaimard). 

 Hub. Indian and Pacific Oceans. 



154. Strombus TRicoRNis, Lamarck. 



Hab. Red Sea, Bourbon, Seychelles, Philippines. 



155. Strombtjs gibberulus, Linn. 



Sab. Aden (Caramagna); Red Sea, Assab, Indian Ocean, Philip- 

 pines, Polynesia. 



156. Strombus luhuanus, Linn. 



Hab. Red Sea, Assab, &c. as for S. gibberulus. 



157. Strombls floridus, Lamarck. 

 Hab. Same as preceding species. 



158. Strombus dentatus, Lim ., var. 



Hab. Red Sea, Indian Ocean, &c. 



The specimen from Aden belongs to the variety named ;S. tleguna 

 by Sowerby. ;S'. rvppellii, Reeve, is another variety. 



159. Strombus -xerburyi. (Plate XXXIII. fig. 5.) 



Testa parva, subfusiformis, alba, plus niinus lutescenti balteata ; 

 sjrira gracilis, producta, longit. totius ? subaquuns ; anfractus 

 normales circiter 9, svperne concavi et marginati, svpra 

 medium roiunde angulati, infra angulum fere recti, longi- 

 ludiimliter plicati, transverstrnque sidcati ; plic<E vel costce 

 nvmerosce (in anfr. permit, ad 24, in ultimo 16-17, inferne 

 sensim evanescentibus pnucis labrum versus, cceteris majoribus 

 et mngis distanfibus, svperneque subnodosis), paurce supra 

 spirnin vuriciformes ; sulci regulares, sujjru et inter costus 

 continui, interstitia vix cequantes ; anfr. idtimus brcvis, basim 

 versus paulo constrictus ; labrvm dilatatum, ad marginem 

 anfractus superiorem productum, intus et extus incrassatum, 

 sulcatum, ad marginem acutum ; aperiura angusta, alba ; 

 columella callo crenulato tetnii rufo notato induta. 



Longit. 35 millim., diam. maj. 19. 



This sjiecies recalls to mind <S. cancellatus of Pease, a Sandwich- 

 Island forn,. It differs in colour, in the greater length ot the Sj ire, its 



