CENSUS OF FORAMINIFERA. 355 



The Miocenes of South Australia are not particularly rich in 

 foraminifera. They are, for the most part, either closely com- 

 pacted ()3'ster beds or fine variegated sands that are sparsely 

 fossiliferous. In the Muddy Creek section, however, there is a 

 rich a'^semblage of forms. Altogether there are eighty-nine species 

 recorded from these localities, including one new species from the 

 Adelaide beds and several from the Muddy Creek upper bed, some 

 of which are of great interest. 



[In the course of discussion at the close of the reading of the 

 present paper, in Section C, Mr. Dennant remarked he has since 

 discovered that the material supplied by him (and from which the 

 determinations have been made) had inadvertently got mixed with 

 material from the lower bed (Eocene). In consequence of this 

 fact the above list may require some revision. I had suspected the 

 presence of foreign forms, and rejected a few as " derived " when 

 searching the material. — W. H.] 



EOCENE. 



LOCALITIES. 



1. Muddy Creek, No. ]. — The occurrences noted in No. 1 

 column have been taken from a short list of species published 

 by the late Rev. Julian E. T. Woods " On Some Tertiary Deposits 

 in the Colony of Victoria (Muddy Creek)." (See Quar. Jour. 

 Geo. Soc, 1865, vol. xxi., p. 391.) In this article the author 

 states : — " The foraminifera are large and numerous ; indeed one 

 species ( Amphistegina vulgaris, d'Orb.) is so common that the 

 clay is principally composed of it. Its large lenticular form can 

 be traced in almost every pinch of the debris, and what makes the 

 individuals more conspicuous is that they have all received the 

 ferruginous glaze, which makes them look like little coins. From 

 their numbers the strata may in truth be called an AmphisUgina 

 bed, similar to that in Vienna, and probably of the same age." 

 Mr. Woods is evidently mistaken in his determination of Amphis- 

 tegina as the leading feature of the foraminiferal fauna at Muddy 

 Creek. Amphistegina exists in the Muddy Creei^ material, but is 

 not nearly so large or numeroxis as another species, viz., Nummu- 

 lites variolaria, which answers in all respects to Mr. Woods's 

 descriptions, and is evidently the form intended. It is, therefore, 

 really a Nummulitic rather than an Amphistegvne bed. I have 

 taken the liberty of making this correction in Mr. Woods's list. 



2. Muddy Creek, No. 2. — This lis" of 164 species was deter- 

 mined by the present author fi'om the very rich material gathered 

 by Mr. Uennant. A goodly number of the species in this list are 

 more or less rare, and were compiled as the result of a careful 

 microscopic examination of the material extending over a period 

 of two years. For further particulars see " The Foraminifera of 

 the Older Tertiary of Australia (No. 1, Muddy Creek, Victoria)," 



