34 SMITH : NEW LAND SHELLS FROM SOCOTRA. 



My colleague Mr. Ogilvie Grant and Lieutenant-Colonel 

 Ycrbur}', both ardent and experienced collectors, who propose 

 to visit Socotra next year will doubtless add considerably to 

 our knowledge of the fauna. Therefore, until their return, I 

 abstain from giving a full report upon the shells obtained by 

 Mr. and Mrs. Bent, and merely offer descriptions of the new 

 species which they discovered. 



1. Ennea cylindracea, n. sp., (PI. \., fig. i). 



Testa parva, angusta, cylindracea, imperforata, alba, pcUucida ; 

 spit'd elongata, ad apicem mammillata ; anfracitis sex, Icnte accresceutcs, 

 primus globosiis, tres sequentes convexiusciili, ult. et penult, planiuscnli 

 sutura profunda ohliqua discreti, lineis incrementi tcnuihus striati, 

 nltimus antice subascendens, supra dorsum tenuiter costulato-striatus ; 

 apertura irregulanter subquadrata, parva, longit. totius ^ adaequans, 

 dente unica parietali instructa; peristoma leviter incrassatum, marginibns 

 callo conspicuo junctis, exteriore versus suturam leviter sinuate, columellari 

 dilatato, intus prominente, subplicato. 



Longit. 7, diam. 2 mm. Apertura 7.6 longa, 1 ,25 lata. 



2. Buliminus (Passamaiella) mirabilis, n. sp., 



(PI. v., fig. 2). 



Testa subglobosa, superne acuminata, purpureo-fusca, rimata, lineis 

 incrementi tenuibus obliquis striata ; spira conoidea, ad apicem sub- 

 mammillata ; anfractus ^\, superiores duo convexi, laeves, sequentes vix 

 convexiusculi, nltimus magnus, globosus, postice leviter descendens, sed 

 versus aperturam subascendens, pone labrum foveam profundam cxhibens, 

 et infra rimam umbilicalem valde excavatus ; apertura auriformis, longit. 

 totius \ paulo supevans ; peristoma incrassatum, expansum, reflexum, 

 livido-fuscum, marginibus callo plus minus crasso junctis, externa intus 

 in medio tuberculo dnplice albo valde prominente instructo, columellari 

 plica crassa intrante alba armato. 



Longit. 23, diam, 16 mm. 



Distinguished by its globose form, colour, and the characters 

 of the aperture. In form this species bears a striking resem- 

 blance to a shell from Fernando Noronha described by the 

 author under the name oi Bulimus (Tomigerus) ramagev''-, and the 

 armature of the aperture although different, is of the same 

 character. 



B. isthmodon. Martens is smaller, differently coloured, and 

 has a more oblique aperture and the sculpture appears to be 

 rather coarser. 



* Journ. Linn. Soc, vol. xs., p. 500, pi. xxx., fig. 8. 



