284 MELVILL : NEW SPECIES OF MITRA. 



Shell oval;ely turreted, spire acute, whorls transversely im- 

 presso-strdate, longitudinally very frequently ridged, ridges of a 

 uniform sienna brown, columella four-plicate. 



This, if not a variety, undoubtedly comes very near M. 

 arenosa (Lam.), which, with M. exasperata (Chem.), makes up 

 one very variable species, and, whilst differing in the absence of 

 any central fascia, and peculiar in the straight many-ridged brown 

 lines, from any of the many specimens of the above mentioned 

 that I' have- examined;. I describe it as distinct with some little 

 diffidence, although it has been pronounced by some experienced 

 conchologists to whom it has been shown, a true species. 



Mitra Sybillae nov. sp. PL ii, fig. 17; 



M. testa lanceolata, spira turrita, anfractibus longitudinaliter 

 costoso plicatis, costis compressis, angustis, interstitiis valdk 

 striatis, cinereq-alba, infra plumbeo-nigresescente, apice eodem 

 colore tincto, columella quinqueplicata. 

 Long. 16 mill., lat. 5 mill. 

 IJa^b. : Andaman Islands, 



Shell lanceolate, spire turreted, whorls longitudinally 

 costoso-plicate, the ribs compressed, narrow, the interstices con- 

 spicuously and deeply striate, ashy white, below bluish lead 

 colour, the apex being tinged with the same colour, columella 

 five-plaited. 



An ornate little shell with narrow compressed ribs, and 

 conspicuously two-coloured, belonging ta the subgenus Turri^ 

 cula (Klein). 



Mltra percnodictya nov. sp. PI. ii, fig. 18. 



M. testa angusta, fusiformi, brunnea, turrita, inulticostata, costis 

 loevigatis, interstitiis profund'e cancellatis, columella triplicata. 



Long. II mill., lat. 4 mill. 



Hab. ? Probably one of the Philippine Isles. 



Shell narrow, fusiform, turreted, dusky-brown, many 



ribbed, ribs smooth, interstices deeply cancellated, columella 



three-plaited. 



J.C, v., Jan., 1888. 



