297 



Dentalium Isevis, Hutton. 



1873. BcntaUiim hcvis, Hutton, Cat. Tert. Moll. N.Z. p. 2. 



"Small; slightly curved, tapering slowly; smooth, -with fine 

 distant longitudinal lines." — Hutton. 



G. 10253. Fragment probably referable to this species, in 

 micaceous, argillaceous, friable sandstone ; Miocene, Poi't Hills, 

 Nelson, New Zealand. Sir James Hector Coll. 



G. 10255. Several fragments, too imperfect to enable the 

 writer to figure and describe the species; Miocene, Kanieri, 

 South Island, New Zealand. Sir James Hector Coll. 



Genus CADULUS, Philippi. 

 [Enum. Moll. Sicilioe, vol. ii. 1844, p. 209.] 



The following species is referred to Cadulus with all reserve. 

 It is practically impossible to distinguish between that genus 

 and Siphonodentalium with the shell alone. Authors have placed 

 some reliance on the nature of the margin of the posterior orifice ; 

 but Dall has shown ' that the anal orifice of the shell may 

 be waved or simple on its margin in different specimens of the 

 same species ; and Fischer has called attention ^ to the fact 

 that those which have the margin interrupted by several slits, 

 or notches, exhibit considerable variation in the details. However, 

 if it is admitted that on the whole the shell of Cadulus should 

 be short, inflated medially, and thickened internally towards the 

 posterior oi-ifice, which is crenulated, the Australian species about 

 to be described may be assigned to that genus. 



Type. — Cadulus ovulum, Philippi. 



Cadulus mucronatus, Tate. 



1887. Cadulus mun-onatus, Tate, Trans. Roy. Soc. South Aust. vol. ix. p. 193, 



pi. XX. fig. 10. 

 1893. Cadulus mucronatus, Tate and Dennant, id. vol. xvii. pt. 1, p. 223. 



' Trans. "VTagnor Free Inst. Sci. Philad. vol. iii. pt. 2, 1892, p. 443. 

 ^ Manuel Conchyl. 1885, p. 895. 



