113 



compressed, very thin, and more oblique than in the adult. A 

 very noticeable feature in the shell is the arch-shaped, much 

 produced columella. 



It is unfortunate that the only specimen in. the Museum is 

 minus its protoconch ; and the present writer is not able, in 

 consequence, to assign the species to a systematic position without 

 doubt. From Professor Tate's description, and from the figure 

 accompanying it, the protoconch would appear to be bulbous, 

 which is not a characteristic of Scaphella. It is possible, on 

 that account, that the species should be assigned to Voluta, 

 and placed somewhere in the neighbourhood of Fulgoraria, 

 Schumacher ' ; but the other features of the shell are in close 

 agreement with the genus in which it is here placed, and in the 

 absence of direct evidence it may be provisionally retained as 

 a Scaphella. 



I) i mens ions. — Length 67 mm. ; breadth 30 mm. ; length of 

 aperture 42 mm. 



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



G. 4254. An example of the adult, showing abundant callosity 

 on the posterior half of the columella. 



Presented hy John Bennant, Esq. 



Scaphella pacifica, Lamarck (sp.). 



1822. Voluta pacifica, Lamarck, Anim. sans Vert. t. vii. p. 344, No. 35. 

 1832. Voluta pacifica, Quoy and Gaimard, Voy. de I'Astrolabe, Zool. t ii, 



p. 625, pi. xliv. fig. 6. 

 1849. Voluta pacifica. Reeve, Conch. Icon. pi. xvii. figs. 3Sff-J. 

 1871. Voluta (Alcithoe) pacifica, Crosse, Journ. de Concliyl. 3'^ ser. t. xi. 



p. 293. 

 1873. Voluta pacifica, Hutton, Cat. Tert. Moll. N.Z. p. 7. 

 1873. Voluta pacifica. Von Martens, List. Moll. N.Z. p. 22. 

 1873. Voluta (Alcithoe) pacifica, Hutton, Cat. Marine Moll. N.Z. p. 18. 

 1880. Voluta pacifica, Hutton, Man. X.Z. Moll. p. 61. 

 1882. Voluta [Alcithoe) pacifica, Tryon, Manual of Conchology, vol. iv. 



p. 94, pi. xxviii. figs. 97-9. 

 1893. Voluta pacifica, Hutton, Linn. Soc. X.S.W., Macleay Mem. Vol. p. 46. 



Shell elongate, fusiform; protoconch scaphelloid, composed of 

 two and a half smooth turns ; spire of five whorls, the first two 



» Essai Nouv. Syst. Habit. Testaces, 1817, p. 242. 



