176 PROCEEDINGS OF THE MALACOLOGICAL SOCI?:Tr. 



Hah. — Ascension Island (Keppel). 



This shell differs from M. cornea, Larak., in its short ovate robust 

 form, and in the prominence and length of the numerous columellar 

 plicae, which cover almost the whole length of the aperture, and 

 extend partly across the base of the shell. 



MuREX (Pteronotus) exqttisitus, n.sp. 



Testa elongato-trigona, albida, fusco late balteata; spira acute 

 conica; anfractus 7, primi 2 (apicales) oblique papillares, fere laeves, 

 sequentes 2 convexi, costis 8-10 eximie squamosis instructi, caeteri 

 angulariter trivaricosi, undique squamis minutis copiosis undulatis et 

 imbricatis ornati, spiraliter lirati ; anfractus ultimus supra angulatus, 

 infra attenuatus, rostratus, varicibus tenuiter expansis, leviter reflexis, 



acute angulatis, breviter spinosis ; rostrum mediocriter productum, 

 rectiusculum ; apertura parva, rotunde ovata. Operculum corneum, 

 lamellosum. Long. 26, diam. maj. 9 J mm. 



Hab.—'i 



This lovely little Murex has somewhat the form of Evpleura caudata, 

 Say. It is exquisitely laminated and scaled all over. There were 

 three specimens of it in the collection of Admiral Keppel, without any 

 indication of habitat. 



YoLDIA KePPELIANA, D.sp. 



Testa oblonga, subovalis, tenuis, compressa, olivacea, nitida, oblique 

 lirata, liris irregularibus, antice subdistantibus, postice coarctatis; 

 margo dorsalis anticus longus, mediocriter declivis, levissime arcuatus, 

 posticus brevis, truncatus, vix rostratus; margo ventralis postice 

 convexus et multum acclivis, ad extremitatem acute angulatus, in 

 medio leviter arcuatus, antice rotundatus ; cardo normalis. Long. 43, 

 alt. 31, crass. 8 mm. 



Euh.—'i 



