Remarks on the Eocene Rocks of Victoria. 153 



sheet of basalt, and that the intercalated limestone does not 

 exist, the appearances being due to deposition as a littoral deposit 

 on a bouldery basalt bottom. It is evident that on the main 

 question, the age of the volcanic rock, we are in agreement with 

 the survey in considering it the " older basalt." 



The authors then say that we placed the Spring Creek section 

 lower than the Muddy Creek beds and some others " from its 

 slightly lower percentage of recent species." This is however 

 only a partial statement of our reasons for so doing. Our main 

 reason was stratigraphical, and it was by the latter means that 

 we arrived at our conclusion in the tirst place, and we took the 

 percentage as a piece of confirmatory evidence. 



In calculating our percentage for jMuddy Creek we stated that 

 "at least ten recent species are now known from these beds" 

 (1, p. 191). Messrs. Tate and Dennant (2, p. 116) say that eight 

 and not ten are "recorded to have living representatives." It 

 is quite possible that the authors are not prepared to accept as 

 correct all the recent species which are recorded from the lower 

 beds at Muddy Creek. We went carefully through the literature 

 once more, and find that our statement was below the mark ; we 

 should have said not ten but eleven. Of these nine are to be 

 found recorded, both as occurring in the lower beds and as being 

 recent species, by Messrs. Tate and Dennant. The tenth has 

 been recorded as occurring by them and has been recorded as 

 recent by us, while the eleventh was recorded from Muddy Creek 

 by one of us, and is an acknowledged recent species. 



We are not aware that any of these records have been publicly 

 withdrawn or contradicted, and we give the list with some of the 

 references. 



Recorded Living Species in the Lower Beds of Muddy 



Creek. 



Record in Lower Bed 



Crepidula unguiformis, Lamk. 

 Capulus danieli, Crosse 

 Hipponyx antiquatus, Linn. 



Dentalium lacteum, Deshayes 



