I 



COLrilBAKITJM. 51 



B. angustifrons, but the essential points of difference are the more 

 turbinate character of its spire, and its relatively longer aperture. 

 The body-whorl in typical specimens is rather inflated, and the 

 transverse fold on the columella is very conspicuous. 



It is closely allied to B. engonia, Watson. 



Dimensions. — Length 25 mm. ; breadth 1 3 mm. ; length of 

 aperture 16'5 mm. 



Form, and Loc. — Eocene : Gellibrand river, Victoria. 



G. 9326. Two specimens. Purchased. 



Bathytoma fontinalis, Tate (sp.). 



1893. Dolichotoma fontinalis, Tate and Dennant, Trans. Roy. Soc. South 



Aust. vol. xvii. pt. 1, p. 221 (list name). 



1894. Genotia fontinalis, Tate, Journ. Roy. Soc. N.S.W. vol. xxvii. p. 175, 



pi. X. fig. 4. 



Protoconch slightly more oblique, but is, otherwise, similar to 

 that of the other two species mentioned. The shell may be 

 readily distinguished by its more fusiform character ; the spire- 

 whorls carry a rough angulation, between which and the suture 

 posteriorly is an excavated area with a number of spiral lineations. 

 The lines of growth being rather prominent, a species of oblique 

 reticulation is set up, and where these pass over the peripheral 

 angulation, rudimentary compressed tubercles result. The spiral 

 lineations of the body-whorl are prominent, and occasionally 

 granulose. The sinus is not quite as deeply cut as in the other 

 species mentioned ; aperture pyriform, constricted posteriorly ; 

 columella erect and bearing a well-marked fold. 



Dimensions. — Length 20 mm. ; breadth 18-5 mm. ; length of 

 aperture 11 mm. 



Form, and Loc. — Eocene : Muddy Creek, Victoria. 



G. 9327. Two specimens. Purchased. 



Genus COLUMBARIUM, E. von Martens. 

 [Conch. Mittheil. Bd. ii. 1881, p. 105.] 

 Fiisus, in part, of authors. 



Protoconch bulbous; shell with a comparatively short body- 

 whorl, and long, straight, narrow, nearly closed canal, similar 



