80 PEECY SLADEN TRUST EXPEDITION. 



A small, turbinoid shell, variously brightly coloured, in the markings resembling 

 certain Phasianelte or Neritinse. Its occurrence in the Amirante Isles shows a north- 

 ward extension of range ; it has long been known to occur in the Mascarene Isles, and, 

 under the name of Margarita striatula, Phil., is reported * from Lifu, Loyalty Islands. 



27. Gibbula (Forskalia) pulcherrima, A. Ad. 

 Log. Saya de Malha Banks : Station C 15, 55 fathoms. 



Providence I. : Station D 1, 31 fathoms. 



Amirantes : Station E 11, 25-80 fathoms. 



Seychelles : Station P 3, 31 fathoms. 

 With this I group O.famdoides, Pischer, which seems only a slight variety, with 

 margin angled, owing to projecting nodules. The typical form has been well named by 

 its author, for when fresh and perfect it is undoubtedly one of the more beautiful of 

 the smaller Trochoids. 



28. Solariella aquamarina, sp. nov. (Plate 5. fig. 2.) 



S. testa depresso-conica, profuiide umbOicata, omnino Isevissima, margaritacea, beryl- 

 lina, accuse marinse instar, nitida; anfractibus 6, quorum apicales tres parvi, acuti, 

 albi, striatuli, cseteris ad suturas, canaliculatis antepenultimo juxta suturas supra 

 crenellifero, penultimo et ultimo anfractu omnino Isevissimis, pulcherrime viridi- 

 margaritaceis, ad perii^heriam subangulato ; apertura rotunda, peristomate simpli- 

 ciusculo, regione umbilicari minute et pulchre crenellifera, intus ad faucem umbUici 

 spiraliter decussatim multilirata ; operculo corneo, 6-7-spirali. 



Alt. 6, diam. 11 mm. 



Loc. Saya de Malha Banks : Stations C 4, 150 fathoms, C 6, 145 fathoms, oyster-shell- 



rubble ground. 



A most exquisite species, with a slightly fugitive colour of pearly aquamarine or beryl. 

 It is remarkably smooth, the only sculpture being the incised radiate sulculi around the 

 umbilicus, and the fine spiral liration of the apical whorls. The peristome is remai-kably 

 thin and not in the least reflected. This species has aU the appearance of an abysmal 

 shell. 



29. Solariella iucisura, sp. nov. (Plate 5. fig. 3.) 



^S*. testa parva, depresso-conica, nitida, opaUno-margaritacea, profunde umbUicata; 

 anfractibus 5, quorum apicales duo perparvis, tertio concentrice liratulo, penultimo 

 supra minute crenulato et obscure liratulo, ultimo, in uno specimine fere Isevi, 

 in altero spiraliter sub lente pauciliratulo ; apertura rotunda, margaritacea, peri- 

 stomate simplice, marginem apud columellarem triangulatim refiexo, basi circa 

 umbiliciun fortiter et profunde radiatim sulcata. 



Alt. 25, diam. 4 mm, 



Loc. Saya de Malha Banks : Station C 6, 145 fathoms, on shell-rubble ground. 



Only two examples, and neither in very perfect condition, occurred of this beautiful 



* Journ. of Conch, viii. p. 126 (1895). 



