258 MR. E. A. SMTTH ON THE [Apr. 1, 



thick, produced into acute nodules at the points of intersection, and 

 the quadrate interstices are very deeply pitted. 



Pleurotoma (Clathurella?) MULTIGRANOSA. (Plate XXI. 

 fig. G-) 



Testa pnrva, fusiformi-ovafa, nigrescens vel rufescens, supra me- 

 dium anfractuum alho zonafa, undique granidis alhis et nir/res- 

 centihus aut rujis ornata ; anfractus 5^, nucleares li Jeeves, 

 cornel, superne concccvi, carinati, cceterl pJaniuscidi, costis ad 14 

 Urisque spiralibus supra castas r/ranosis instructi ; lirce in arifr. 

 stiperioribus fres, suprema minima, in idtimo 13-14 / apertiira 

 angusta, longit. totius g suhaquans ; columella rectiuscida, in 

 medio tuherculis minutis duobus instructa, callo tenui induta ; 

 lahrum vix incrassatum, superne brevissime sed distincte sinu- 

 atum. 

 Longit. 4^ millim., diam. 2. 



This species is larger than PL commutabilis, differently coloured, 

 and more closely sculptured. Tlie costse and liiee are so near 

 together that the granules almost touch one another. 



Pleurotoma (Clathurella?) usta. (Plate XXIII. fig. 4.) 



Testa minuta, fusiformi-ovata, nigricans vel rufescens, interdum 

 serie granulorum albidorum paulo infra suturam ornata ; an- 

 fract. 5, priwii 1^ Icevigati, cceteri leviter convexiusculi, costis 

 12-14 paulo obliquis instructi, sidcisque angustis transversis (in 

 anfr. superioribus 4, in ultimo circiter 15) sculpti ; apertura 

 elongata, angusta, dimidium longit. totius vix cequans j colu- 

 mella leviter obliqua, callo tenui induta, in medio interdum indi- 

 stincte ineisa ; labrum 'probahiliter leviter incrassatum, superne 

 vix sinuatum. 

 Longit. 2^ millim., diam. Ig. 



The sulci cut through the costae and produce a somewhat gra- 

 nular appearance. The lira beneath the first sulcus below the 

 suture is that which is white upon the riblets in the black variety. 



MuREX (Chicoreus) adustus, Lamarck. 



Hub. West Indies, Japan, Philippines, Indian and Pacific 

 Oceans. 



In the ' Annals and Magazine of Natural History,' 1875, vol. xv, 

 p. 419, I expressed an opinion that Murex despectus of A. Adams, 

 said to have come from the West Indies, was identical with this 

 species, which is known as an inhabitant of Eastern seas. At the 

 time I doubted the accuracy of the locahty given by Adams, but 

 now I am inclined to oelieve it correct, as so many West-Indian 

 shells have also been found on the eastern side of the Atlantic at 

 St. Helena, Ascension Island, and on the west coast of Africa. 



Murex (Ocinebra) sanct.«;-helen^. (Plate XXIII. fig. 5.) 



Testa fusiformis, alba, varicibus tribus obliquis, compressis, dentatis, 

 et liris spiralibus {in anfract. superioribus duobus, in ultimo 



