Bag of Bengal and the Arabian Sea. 459 



Hab. Philippine Islands, 375 fatli. ('Challenger') ; Stations 

 off Andaman Islands, 185-405 fath. ('Investigator'); in 

 188 fath. (Sowerby, P. Malac. Soc. i. p. 38). 



The specimens from the Andaman Islands are perhaps a 

 trifle shorter in proportion to their width than the type and 

 have the transverse lirse upon the body-whorl more distinctly 

 granose. A single oblique fold, not noticed by Watson, is 

 present upon the middle of the columella. This is only 

 visible when the outer lip is broken away. A very fine 

 example from 405 fath. is much larger than the specimen 

 obtained by the ' Challenger,' being 47 mm. in length and 

 20 in width. Three out of the four examples examined have 

 a number of fine lirse within the outer lip, a feature not 

 present in the 'Challenger'' shell. 



P. Wetherelli, Ed., of the London Clay, and the Miocene 

 P. cataphracta are very closely allied forms. 



From P. Oldhami this species differs in the absence of the 

 channelled suture and the broad raised belt with a deep 

 groove beneath it. 



Pleurotoma (Bathytoma) Oldhami, Smith. 



Pleurotoma {Bathytoma) Oldhami, Smith, Ann. & Mag. Nat. Hist. 

 1899, vol. iv. p. 238 j Illust. Zool. 'Investigator,' pl.ix. figs. 2, 2 a. 



Hab. Station 229, off Travancore coast, in 3G0 fath. 



Pleurotoma (Ancistrosyrinx) travancorica, Smith, 

 var. granulata. 



Pleurotoma {Ancistrosyrinx) travancorica, Smith, Ann. & Mag. Nat. 

 Hist. 1896, vol. xviii. p. 368 ; Illust. Zool. ' Investigator,' Mollusca, 

 pi. vii. figs. 1, 1 a. 



Hab. Station 229, off Travancore, in 360 fath. ; Stations 

 233 and 240, off Andaman Islands, in 185-194 fath. 



Three specimens from off Travancore differ from the type 

 in having the lower part of the body- whorl covered with 

 oblique rows of minute granules, also in having a spiral 

 liration in the concavity of the whorls near the dentate keel. 

 This liration bears small tubercles connected by short cross- 

 ridges with the dentations of the keel. Two examples from 

 the latter locality have the dentations at the angle of the 

 whorls conspicuously upturned, so that the upper part of the 

 volutions is deeply concave. The latter are twelve in number, 

 of which the apical one is smooth and globular. 



