440 MKSSES. MBLVILL AND STAN^DEN ON [June 18, 



Drillia tascojstium^ sp. u. (Plate XXIV. fig. 3.) 



D. testa fusiformi, sordide alba vel straminea, tenui ; anfractibus 

 8-10, apicalihus in nostris speciminibus obliteratis, casteris infra 

 {juajta suturas) spiraliter profunde unisulcatis, superficie inter- 

 media ad juncturas costarum nodulosa ; costis longitudinalibus 

 crassis, obliquis, loivibus, inter stitialiter transversim regidariter 

 sulculosis ; apertura ovata, intus fusca, labro paullum eccpanso, 

 tenia, sinu lato, parietaliter adhcerente, prof undo j columella 

 alba, recta, canali paullum producto, recto. 



Long. 23, lat. 9*50 mm. 



Bab. eulf of Oman, lat. 24° 55' N., long. 57° 59' E. 37 

 fathoms, sand and mud. 



Allied in form to Drillia lucida Nevill, from the same locality, but 

 more than twice the size, D. lucida being likewise much smoother- 

 ribbed. The canal is longer, and the sinus both wdder and deeper. 

 The outer lip in both specimens dredged at the above locality 

 has been broken and repaired; the whole build of the shell is 

 coarse, though of a light rather than massive consistency. 

 Particularly conspicuous are the spiral sulci deeply furrowing the 

 summit of each whorl, leaving a narrow noduled space between 

 them and the sutures. 



Drillia tatloriana Eve. 



I. On Eastern Telegraph Co.'s Cable, 121 miles W.S.W. of 

 Bombay. 



P.G-. Grulf of Oman, Maskat. 15 fathoms. 



Drillia theoreta Melv. 



P.G. Henjam Island, 25 fathoms. Shaikh Shuaib I., one 

 large form. Allied to D. cecclii Jouss., which latter, however, seems 

 always paler in hue and more attenuate in form. 



Drillia topaza, sp. n. (Plate XXIV. fig. 4.) 

 D. testa gracili, fusiformi, solida, attenuata, castanea, rubro-suffusa ; 

 anfractibus octo, quorum duo apicales raamillati, Imves, vitrei, 

 cceteris paucicostatis, costis obliquis, ci'dssis, spiraliter undique 

 tenuiliratis, costis anfractus ultimi ad sex; apertura ovata, carnea, 

 labro paullum incrassaio, sinu lato, brevi ; columella recta, 

 canali lato. 

 Long. 11, lat. 3'50 mm. 

 Hab. Grulf of Oman, Maskat, 15 fathoms. 

 Allied to D. theoreta Melv. and D. cecchi Jouss., both of which 

 occur in the Arabian Sea and Persian Gulf. It may be distin- 

 guished from both by its mamillate protoconch and fewer longi- 

 tudinal ribs, as well as the reddish-pink coloration, with dark 

 purple-red suffusion at the aperture round and beyond the sinus. 

 The ribs of the lowest whorl only nnmber six ; they are thickened, 

 rounded, and crossed by close undulating lirse. 



^ tasconium, a yellowish-white earth, from the colour. 



I 



