269 



Dimensions. — "Axis I'l ; breadth 0"35." — Hiitton. These 

 meiisurements are in inches. 



For))!. a)id Loc. — Eocene : Brighton, !New Zealand. 



G. 9596. Fragment of the adult — three whorls, including the 

 last whorl. Sir James Hector Coll. 



Cirsotrema, sp. 



G. 9697. Fragment of a small species imbedded in soft 

 sandstone, probably referable to Cirsotrema or Crisposeala ; from. 

 Parimoa, New Zealand. W. B. B. Mantell Coll. 



G. 9578. Crushed fragment of a large species, in which the 

 ornament is simple and the last whorl very broad. The generic 

 position is doubtful j from the Miocene of Port Hills, Nelson, New 

 Zealand. Sir James Hector Coll. 



Genus CROSSEIA, A. Adams {em.). 

 [Ann. Mag. Nat. Hist. 3rd ser. vol. xv. 1865, p. 323.] 



Shell small, nmbilicate, conical or turbinate ; whorl convex, 

 reticulated, simple or varicose ; aperture rounded, prolonged 

 anteriorly, where it is deeply notched and somewhat canaliculate ; 

 umbilicus bordered by a long, curved, raised rim, often crenulated. 



Type. — Crossea miranda, A. Adams. 



Crosseia princeps, Tate. 



1890. Crossea princeps, Tate, Trans. Roy. Soc. South Aust. vol. xiii. pt. 2, 



p. 220. 

 1892. Crossea princeps, Tate, id. supp. pi. viii. figs. 6, 6^. 



Shell depressed, conoidal, solid, polished ; whorls five in number, 

 strongly convex, sharply sloping towards the suture ; anterior 

 notch of the aperture slightly canaliculate ; umbilical slit bordered 

 by a long, raised, crenulated rim. 



It has considerable analogy with the living C. concinna, Angas. 



Bimensions. — Length 5 mm. ; breadth 4'75 mm. 



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



G. 9486. An example of the adult. Purchased. 



