436 MESSRS. MBLTiLL AND STANDEE ON [June 18, 



apertura ohlonga, lihro tenui, sinu . . . ?, margine columelldri 

 sinuoso, canali paullum producto. 



Long. 12, lat. 4 mm. 



Hob. G-ulf of Oman, lat. 24° 55' N., long. 57° 59' E. 37 

 fathoms, sand and mud. 



Characteristically to be recognized bj' its white shining surface, 

 and by the single acute median carination on the second and third 

 whorls, the next whorl, in common with the rest, being longi- 

 tudinally ribbed. These ribs are crossed on the fourth and fifth 

 whorls by two spiral lirss, on the sixth by three, and on the upper 

 part of the body-whorl by five, the ribs appearing, through a lens, 

 senticose at the points of junction. The lower part of the body- 

 whorl is rounded and spirally closely striate. 



Drillia athtema \ sp. n. (Plate XXIII, fig. 22.) 

 D. testa turrito-fusiformi, soUdiuscula, jjalUde straminea ; anfrac- 

 tihtis 10, ajJiccdihus trihus hrevissimis inclusis, vitreis, castaneis, 

 eceteris arete longitudinaliter acuticostatis, costis suhohliqids, 

 spiraliter liratis, liris tenuibus, costis anfractus ultimi circa 

 duodecim, ; apertura ovali ; columella alha, nitida, crassiuscula, 

 canali pauUmn producto. 

 Long. 13, lat. 4*50 mm. 



Hob. Gulf of Oman, lat. 24° 58' N., long. 57° 59' E. 37 

 fathoms, sand and mud. 



Not, perhaps, quite full-grown, as both the specimens examined 

 have the outer lip imperfect, and it is not possible to give any 

 particulars about the sinus. The oblique, acute, longitudinal ribs, 

 and the incrassate, subventricose, upper whorls seem characteristic. 



Drillia batnhami Sm. 

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

 I. Karachi. 



Drillia cecchi Jouss, 



P.G-. Gulf of Oman, Jask. 



M.C. Local at 3-30 fathoms, muddy sand. 



Drillia oiroumvertens, sp. n. (Plate XXIII. fig. 23.) 

 D. testa ovato-fusiformi, compacta, albo-lactea, nitente ; anfractibus 

 8, apicalibu^ duobus albis, loivihus, sub lente longitudinaliter 

 crenelliferis, cceteris acute hi- vel tricarinatis, carinis Icevibiis, 

 superficie inter carinas apud medium anfractuum excavata, 

 oblique concentrice striata, ultimo anfractu bicarinato, infra 

 carinam inferiorem usque ad basim spiraliter pidclire lirato, 

 liris arctis, regularibus ; apertura oblonga, albo-lactea, sinu 

 labiali lato, brevi ; columella fere recta, canali brevi. 

 Long. 6, lat. 2-25 mm. 



Hab. Gulf of Oman, lat. 24° 5' N., long. 37° 35' E. 205 

 fathoms, sand and mud. 



1 dOvpfia, a plaything. 



