JOURNAL OF CONCHOLOGY, 



i^l 



A prettily marked piebald species, dull-white, ornamented 

 with brown waves latitudinally, relieved by brighter flecks of 

 white and grey, the left valve being, as is so often the case, more 

 conspicuously marked than the right. Ribs nineteen in number, 

 the hook-like serrse being very regular and beautiful. 



Pecten valdecostatus nov. sp. PL ii, lo. 



J^. testa subtrigo7ia, altiore quam longa, cequilaterali, cequivalvi, 

 valvis quindecim costatis, costis squa?tiulatis, interstitiis 

 profiind'e sulcatis^ subregularibus, auriculis incequalibus, intus 

 albescente. 



Long. 26 mill., lat. 24 null. 



Hab. : Hong Kong. 



A dull-coloured but boldly-formed species, the furrows 

 being remarkably deep for so small a shell, and the ribs therefore 

 very well defined, they being also beautifully serrulate. 



All the foregoing species are described from the types, at 

 present unique, in my collection. 



DESCRIPTIONS 

 OF FIFTEEN NEW SPECIES OF MITRA. 



By JAMES COSMO MELVILL, M.A., F.L.S. 



Mitra MarionaB nov. sp. PI. ii, fig. n. 



M. testa subelongata, fusiformi, spira attenuata, acuta, anfracti- 

 bus transversim stilcatis, sulcis cancellatis, albida, fulvis 

 fnaculis areolatis regulathn ornata, columella qicinqueplicata. 



Long. 20 mill., lat. 7 mill. 



Habitat ? 



Shell somewhat elongated, fusiform, spire attenuated, acute, 

 whorls transversely furrowed, the furrows being cancellated, 

 colour white, ornamented with square light-brown spots disposed 

 at regular intervals, columella five-plaited. 



