Fo-^sil Fish Remains. 277 



Odontaspis cuspidata, Ag., sp., A. S. Woodward, 1889. Cat. 

 Foss Fishes, Brit. Mus. Nat. Hiat., pt. 1, p. 368. 



Lamna marginalis, Davis, 1888. Trans Roy., Dublin See.., 

 ser. 2, vol. iv., p. 19, pi. 3, f. 8-10. 



Locality and Horizon. — ^Clays of Cape Otway (Pritchard Coll.). 

 Jan Jiikian. 



Black Beds east of Gellibrand River, A.W. 7, Geo. Surv., Vic. 

 (Nat. Mus. Coll.) — Balconibian. 



Beaumaris, Port Phillip. (Nat. Mus. Coll., purchased from 

 J. F. Bailey, also Dixon Coll.) Grange Burn (Pritchard Coll.). 

 — Kalimnan (? derived). 



Observations. — -The teeth of this species are generally of an 

 oblique habit, and probably include the forms figured by 

 Agassiz under the names of hopei, dubia, and ferox. This 

 species has been found in Europe and North America, and oc- 

 curs in Eocene and Miocene formations. Also from the 

 Waipara and Oamaru formations, New Zealand, Upper Cre- 

 taceous and Oligocene, under the name of L. marginalis, Davis. 



Odontaspis attenuata, Davis, sp. (Pi. XT., Figs. 10, 11). 



Lamna attenuata, Davis, 1888. Trans. Roy. Dublin Soc, ser. 

 2, vol. iv., p. 19, pi. 3, f. lla-c. 



Locality and Horizon. — Lower beds of the Aldinga series, 

 South Australia (Pritchard Coll.). Waurn Ponds (Nat. Mus. 

 Coll., purchased from J. F. Bailey). — Jan Jukian. 



Belmont (J. F. Mulder Coll.). — Barwonian. 



Beaumaris, Port Phillip (Nat. Mus. Coll., purchased from J. 

 F. Bailey). — Kalinanan. 



Observations. — The original specimens were described from 

 teeth wanting the base. One of our specimens is fortunately 

 well preserved, and shows that the root is strong and bifid %yith 

 a well-marked median canal at the base of the orown. As the 

 majority of the specimens show merely the crown, there appears 

 to be a definite plane of weakness between the cro^vn and the 

 root. This specie somewhat resembles 0. contortidens, Ag., in 

 having a striated inner coronal face, but these striations in the 

 latter are fewer and more or less parallel, whilst in the former 

 they are closer together, and have a tendency to coalesce. 

 Another distinguishing feature is the very slender habit of 0. 

 attentuata, Ag. 



