440 MESSES. MELVILL AND STAND EN ON [J line 18, 



Deillia tasconium 1 , sp. n. (Plate XXIV. fig. 3.) 



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

 8-10, apicalibus in nostris speciminibus obliterates, ccetcris infra 

 (Juxta suturas) spiraliter profundi unimhatis, superficie inter- 

 media ad juncturas costarum nodulosa ; costis longitudinalibus 

 crassis, obliquis, Icevibus, interstitialiler transversim regulariter 

 sulculosis ; apertura ovata, intus fi'sca, labro paullum expanso, 

 tenui, sinu lato, parietaliter adhaerente, prof undo; columella 

 alba, recta, canali paullum producto, recto. 



Long. 23, lat. 9*50 mm. 



Bab. Gulf of Oman, lat. 24° 55' N., long. 57 c 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 wider 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. 



DEILLIA TATLOE1ANA Eve. 



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

 Bombay. 



P.O. Gulf of Oman, Maskat. 15 fathoms. 



Deillia theoeeta Mel v. 



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

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

 always paler in hue and more attenuate in form. 



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

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

 anfractibus octo, quorum duo apicales mamillati, Iceves, vitrei, 

 cceteris paucicostatis, costis obliquis, crassis, spiraliter undique 

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

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

 canali lato. 

 Long. 11, lat. 3'50 mm. 

 Bab. Gulf 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 mainillate 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 number six; they are thickened, 

 rounded, and crossed by close undulating lira?. 



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



