172 LIST OF MOLLUSCA COLLECTED AT GREEN POINT, AVATSON's BAY, 



Family P Y r a M i d e L L i d ^. 



52. Obeliscus jucundus, Angas. One specimen. 



53. OsciLLA LIGATA, Angas. Four specimens. 



Family LiTTORiNiDiE. 



54. LiTTORiNA MAURiTiANA, Lam. ; L. Diemanensis, Qnoy. 



Twenty-three specimens, of which twelve are young. 



Family Fossarid^. 



55. Fossarina Brazieri, Angas. Twenty-three specimens. 



Family Planaxid^. 



56. Alaba lauta, A. Ad. One specimen. 



57. Alaba sp. One specimen, broken in lip. 



Family CERiTHiOPSiDiE. 



58. Cerithiopsis Angasi, Semper ; C. dathrata, Angas, non A. 



Adams. Three specimens. 



Family Cerithiace^e. 



59. BiTTiUM GRANARIUM, Kiener. Thirty-two specimens, of which 



tweuty-five are young. 



60. BiTTIUM VARIEGATUM, Sp.nOV., Braz. (PI. XIV, fig. 9). 



Shell elongately turreted, rather solid, white, reddish-brown or 

 chocolate, variegated with blue, black, and brown ; whorls 9, 

 having four spiral rows of numerous small beads or grains, smooth 

 between ; base convex, spirally striate ; back of last whorl with a 

 prominent white varice, some specimens showing it more to the 

 right and left of the centre ; sutures somewhat deep, aperture 

 roundly ovate, outer lip simple, arcuate ; columella slightly 

 twisted towards the base, canal short. 



Long 5, 5 J, 6, broad If mm. One specimen. 



