Baij of Bengal and the Arabian Sea. 241 



aniVachis 11-12, costis leviter obli(iiiis circiter 12, paulo infra 

 suturam sulco baud profimdo bisectis, iiistructi, undiquc tenuiter 

 spiraliter striati ; apertura parva, longit. totiiia ^ baud tcquans ; 

 labrum tenuc, prominens, arcuatum, supra profunde sinuatum ; 

 columella callo conspicuo soluto, ad suturam ijromiueute et labro 

 juncto induta ; canalis anterior brevis, recurvus. 

 Longit. 19 millim., diam. 6 ; apertura G longa, 2 lata. 



Ilah. Station 233, off Andaman Islands, 185 fath. 



This species is remarkable on account of the fine transverse 

 striffi which cover the entire surface, also for the prominent 

 columellar callus and the deep rounded sinus of the labrum. 

 The upper ends of the costai are cut off by a shallow groove 

 or depression. Found attached to Xenophora pallidula. 



10, Trophon tenuirostrafus. 



Testa fusiformis, albida ; spira acuminata, turrita ; anfractus circiter 

 octo, infra medium angulati, supra declives, paulo concavi, longi- 

 tudinaliter tenuiter phcati (plicis in anfr. ult. 12-13 mferne 

 attenuatis\ lineis incrementi tenuibus striati, ultimus liris tribus 

 subobsoletis transversia cinctus, infra augulum convexus, antice 

 tenuiter rostratus ; apertura superne ovata, antice canaliculata ; 

 columella rectiuscula, callo tenui induta. 



Longit. 28 millim., diam. 10| ; apertura cum canali 15 longa, 

 4g lata. 



Ilab. Station 233, off Andaman Islands, in 185 fath. 



The plicai become slightly acutely nodose at the angulation, 

 and the three feeble transverse ridges upon the body-whorl 

 give it a faintly clathrate appearance. One example only. 



11. Trophon indicus. 



Testa late fusiformis, alba, epidermide tenui subolivacca induta ; 

 spira turrita, conica ; anfractus 8 ?, supra declives, subconcavi, in 

 medio angulati, plicis obliquis tenuibus (in anfr. penult, circiter 

 18) instruct!, spiraliter tenuiter striati, ultimus amplus, plicis 

 antice tenuioribus ; apertura alba, longit. totius i adspquans ; 

 labrum tenue, supra angulum late baud profunde sinuatum, infra 

 arcuatim prominens; columella callo albo induta, leviter in- 

 curvata. 



Longit. 35 millim., diam. 18 ; apertura 18 longa, 8 lata. 



Eah. Station 233, off Andaman Islands, in 185 fath. 

 In addition to the plica, the surface exhibits iine lines of 

 growth. A single specimen only. 



