312 MR. E. A. SMITH ON THE [A-Pl"- 1. 



liris duobus elevatis fissuram contiac/entibus superne insti-uctus ; 

 apertura irregulariter rotundata ; peristoma tenue, continuum. 



Diam. maj. I5 millim. 



There 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 becom.e 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 Scissurella carinata. 



FissuRELLA MUTABiLis, Sowerby. 

 Hab, South Africa, at the Cape. 



Patella umbella, Gmelin. 



Hab. South Africa, Cape of Good Hope. 



Patella rtjstica, 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 

 lirse 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. 



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

 Testa parva, tenuis, albida, superne at) c/uste perforata, striis spira- 

 libuset longitudinalibus minute decussata ; anfr. ultimus lateribus 

 rectiusculis, inferne paido latior quam supra ; apertura supra 

 awjusta, infra medium leviter dilatata ; columella obliqua, 

 suhreeta, leviter rejlexa. 

 Longit. 2| millim., diam. \\. 



This species has much resemblance to Utricultis complanatus, 

 Watson, in form. It is, however, a little 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. 



