THE A\i\ALS 



AND 



MAGAZINE OF xNATURAL HISTOUY. 



[SEVENTH SRIUKS.] 

 No. 106. OCTOBER 1906. 



XXXyi.—NatKmt Histori/ Notes from R.I.M.S. 'Investi- 

 gator.' — Series III., No. 10. On Mollusca from the Bay of 

 Bengal and the Arabian Sea. By Edgar A. Smith, I.S.O. 



[Concluded from p. 175.] 



Bathijbembix Nevilli, sp. u. 



Testa turbinata, imperforata, alba, periostraco tenui griseo induta ; 

 spira conica, pagodiformis ; aiifractus 8-9, supra concave declivos, 

 infra medium angulati, ad angulum acute tuberculati, t^upra ad 

 suturam tuberculati, infra ad suturam minute denticulati, liiieis 

 incremeuti obliquis striati, ultimus infra angulum tul)erculatum 

 liris quiuque crenulatis cinctus ; apertura obliqua, irregulariter 

 rotundata, intus sulcis levibus 4—5 sculpta ; labrum tenue, basi 

 subexpansum ; columella alba, incrassata, reflexa, callo tenui 

 labro juncta. 

 Alt. 30 mm., diam. maj. 2G, min. 22; apertura 12 longa, 13 lata. 



Hab. Station 277, south of Ceylon, 859-880 fath. 



The minute tuberculation or crenulation at the suture and 

 the crenulation of the five basal lirse are caused by the lines of 

 growth. The acute tubercles are about twenty in number 

 upon the last whorl, and become smaller and closer together 

 as they ascend the spire. 



Rather lil^e B. argtnteo-nitens, Lischke, from Japau, but 

 smaller, with a thicker external calcareous suriace, more 



Ann. & Mag. N, Hist. Ser. 7. Vol. xviii. 18 



