1901.] MOLLUSKS FROM THE PERSIAN GULP. 439 



D. sinensis Hinds and D. incerta E. Smith, species both of the 

 same form, may be at once distinguished by greater coarseness in 

 both sculpture and spiral liration. 



Deillia persica Sm. (Plate XXI. fig. 14.) 

 P.G. Bushire. Henjam Island. Fao. 



I. Karachi. 5-15 fathoms, in thick clayey mud. Some speci- 

 mens are beautifully tinged with pink over the costal interstices. 



Drillia prunulum, sp. n, (Plate XXIV. fig. 2.) 

 D. testa attenuata, fiisiformi, turrita, tenui, cinereo-brunnea, ci/pud 

 hashn prunicolore ; anfractibus decern, quorum apicales 2-3 

 pallide brunnei, vitrei, Jeeves, cceteris apud suturas spiraliter 

 crassijugatis, utrinque excavatis, a^nid medium nodulosicostatis, 

 costis Icevibus, nitidis, albescentibus, in anfractu penultimo circa 

 sedecim., undique spiraliter crassiliratis, ad juncturas costarum 

 gemmidatis, ultimo anfractu costis evanidAs, regulariter can- 

 cellato, supra angidato ; apertura ovata, paullum contracta, 

 lacteo-purpurascente, labro tenui, sinu rotundato, lato, haud 

 ■profunda, intus, cum columella nitida, prunicolore, canali brevi. 

 Long. 12, lat. 4 mm. 



Hab. Gulf of Oman, Maskat, 15 fathoms. 



The colour of this highly sculptured, tornate, and spirally noduled 

 species is remarkable, being an ashy br"o\\n, developing at the base, 

 and over the greater part of the body-whorl, to deep plum-coloured 

 purple. The noduled ribs in the centre of all excepting the apical 

 and body whorls give an angular appearance ; these disappear for 

 the greater part on the last whorl, the beautiful cancellations 

 being here seen with the best effect. 



Drillia resplendens Melv. (Plate XXI. fig. 11.) 

 P.G. Gulf of Oman, lat. 24° 55' N., long. 57° 59' E., 

 37 fathoms, sand and mud, only juvenile examples. On the 

 telegraph-cable in three or four places amongst shell-growth it 

 attains a fair size (20-22 mm.) and is very fine in colour. We 

 figure a typical example. 



Drillia robusta Plinds. 

 P.G. Bahrein Islands. 



Drillia sacra Eeeve. 

 P.G. Shaikh Shuaib I. 



I. Karachi, local at 3-7 fathoms. Bombay (Abererombie). 



Drillia sinensis Hinds. 



M.C. Eare, an attenuate variety occurs occasionally at 10-15 

 fathoms, near Gwadur. 



I. Karachi. Young examples only dredged living. 



Drillia spectrum Eve. 



P.G. Gulf of Oman, lat. 26° 10' JN"., long. 52° 50' E., 29 

 fathoms, none living, mud and rocky basis. 



