Pakmntology of Older Tertiary of Victoria. 99 



Locality. — Eocene beds of Muddy Creek, Mornington, Lower 

 Moorabool Valley, Gellibrand River, Curlewis, Spring Creek. 



The next species that comes under notice as a consequence of 

 the above, should my interpretation of the work of T. Woods be 

 ■correct, is the very common shell hitherto referred to as Ranella 

 prattii, but which should now have a new name. I therefore 

 propose to call it — 



Apg-obuccinum maccoyi, sp. nov. 



1888. Ranella (Argobuccinum) prattii, Tate (non. T. 



Woods). Trans. Roy. Soc. S.A., vol. x., 

 pp. 115, 116, pi. 6, f. 6. 



1889. Argobuccinum pratti, Cossmann. Ann. Ge61. 



Univ., torn, v., p. 1089. 

 1894. Argobuccinum pratti, Tate. Jour. Roy. Soc. 



N.S.W., vol. xxvii., p. 172. 

 1897. Apollo pratti, Harris. B. M. Cat. Aust. Tert. 

 Moll., pp. 195, 196. 



Localities. — Muddy Creek, Western Victoi-ia ; jMornington 

 Clays; Moorabool Valley ; Curlewis; Gellibrand River; River 

 Murray Cliffs near Morgan, South Australia. From deposits of 

 Eocene age at the above localities. 



Observatio7is. — As already indicated. Professor Tate regarded 

 this species as representing the adult of Triton pratti, T. Woods, 

 and clearly seeing that the description of T. Woods did not 

 altogether suit this shell, he therefore described and figured 

 the present species, with T. Woods' name erroneously attached, 

 thinking to amplify the previous work. 



This species is somewhat variable in many respects, the large 

 coarse form represented by Professor Tate in his Tertiary Gastro- 

 poda, Plate VI., Fig. 6, being by no means the commonest or 

 most generally distributed form in Victoria. I believe this 

 is the prevailing form at the Murray River section, South 

 Australia, it also occurs at Muddy Creek, but at most of our 

 localities the prevailing form is finer in ornament, with the 

 tessellated character of the whorls very distinct, the somewhat 

 nodulose costee of the body-whorl being almost if not entirely 

 absent, while the shells are not of such a robust character, at 

 the same time being relatively more elongate and not so broad. 



