308 Messrs. J. C. Melvill and R. Standen on 
whorl with one keel, the others twice spirally carinate, the 
remainder of the whorls being closely longitudinally ribbed ; 
ribs smooth and shining, white, the interstices closely spirally 
lirate. The mouth and lip of the new form resemble those 
of Metula Hindsii, but are finer, and the inner labral 
denticulations more numerous. f 
Murex (Ocinebra) Marjorie, sp.n. (Pl. XXII. fig. 10.) 
M. testa solida, ovato-oblonga, albo-cinerea ; anfractibus sex, undique 
costatis, costis percrassis, varicosis, sex-fimbriato-squamatis, 
numero anfractum apud ultimum quinque, ad medium anguli- 
feris, spiraliter squamato-liratis, liris rudibus, crassis; apertura 
rotundo-ovata, labro extus pulcherrime multifimbriato, albo vel 
stramineo, crasso, intus nitido, 9-10-crenulato, canali brevi- 
rostrato, fere clauso. 
Long. 25, lat. 13°50 mm. 
Hab. Persian Gulf, Sheikh Shuaib Island, 15 fathoms. 
An exceedingly elaborately frilled species, the fimbrize 
being thick and squamate, with fluted processes. In form 
this shell recalls I. coceineus, A. Ad.; the outer lip is 
either white or straw-coloured, the canal is shortly rostrate, 
almost closed. 4. cyclostoma, Sowb., is a near ally; we 
have Erythrean specimens of this, but the form is much more 
rotund and the fimbriations in no way so elaborate. 
Peristernia corallina, sp.n. (Pl. XXII. fig. 11.) 
P. testa solida, parva, ovato-fusiformi, cinereo-albescente ; anfracti- 
bus 6, apicali levi, simplici, ceteris longitudinaliter crassicostatis, 
costis paucis, in ultimo apud 7, undique spiraliter rudiliratis ; 
apertura anguste ovata, pallide punicea vel carnea, labro intus 
denticulato, margine columellari paullum reflexo; columella 
quadriplicata, canali brevi, recuryo. 
Alt. 13, lat. 9 mm. 
Hab. Persian Gulf, Gulf of Oman, near Maskat, 10 fathoms. 
A somewhat solid, small, but well-grown Peristernia, 
unlike any species known to us, being superficially similar 
to a Coralliophila; indeed, as suggested by the specific name, 
we should imagine it would be found ultimately inhabiting 
corals. The surface is chalky-ash, longitudinally rudely 
ribbed, crossed by equally coarse spirals; mouth pale pink, 
ovate, outer lip thickened, seven-denticled within, columella 
four-plaited. 
Mitra (Costellaria) diaconalis *, sp.n. (Pl. XXII. fig. 12.) 
M. testa fusiformi, solidula, albo-straminea, apicem versus at- 
tenuata; anfractibus 12, quorum apicales tres fusco-hyalini, 
* Diaconus, a deacon, 
