312 MR. E. A. SMITH ON THE [Apr. 1, 



liris duobus elevatis fissuram eontiiu/entibus superne imtnictm ; 

 apertura irregulariter rotundata ; peristoma tenue, continuum. 



Diam. maj. 1| millim. 



Tliere are two specimens of this very minute shell. The larger 

 has the slit almost closed at the peristome, which is otherwise con- 

 tinuous, so that it is likely, if it had lived a short time longer, it 

 would have been quite closed, and then would have become a form 

 of Schismope. 



In his report on the Gasteropoda of the ' Challenger ' Expedition, 

 p. 119, Mr. Watson has described as Schismope carinata the same 

 species as that published by A. Adams (Ann. Mag. Nat. Hist. 1862, 

 vol. X. p. 346) under the name of Scissiirella carinata. 



FissuRELLA MUTABiLis, Sowerby. 

 Hab, South Africa, at the Cape. 



Patella tjmbella, Gmelin. 



Hab. South Africa, Cape of Good Hope. 



Patella rustica, Linn. 



Hab. South Africa, Cape of Good Hope. 



Patella ocultjs, Born. 

 Hab. Cape of Good Hope. 



Patella compressa, Linne. 



The two specimens from St. Helena are of an unusual bright red 

 colour, and the interior, excepting the muscular scar and the part it 

 encloses, is of the same bright colour. They are in an excellent 

 state of preservation, exhibiting on and between the fine radiating 

 liree very pretty close-set concentric wavy striae. 



Although found on the beach by Capt. Turton, these specimens 

 have doubtless been transported from the Cape of Good Hope to 

 St. Helena upon floating seaweed, upon the stems of which it is said 

 to attach itself. 



Cylicbna remissa. (Plate XXIV. fig. 20.) 

 Testa parva, tenuis, albida, superne anguste perforata, striis spira- 

 libuset longitudinalibus minute devussata ; anfr. ultimus lateribus 

 rectiusadis, inferne piaulo latior qu am supra ; apertura supra 

 angusta, infra medium leviter dilatata ; columella obliqua, 

 sidjrecta, leviter reflexa. 

 Lonqit. 2^ 7nillim., diam. I5. 



This species has much resemblance to Utriculus complanatus, 

 Watson, in form. It is, however, a httle narrower at the upper 

 part, and the aperture is produced higher above the spire. The 

 reticulate sculpture can only be seen under a compound microscope. 



