353 



inflated raised areas. Peripheral margin sharp and sometimes 

 furnished with a keel of considerable extent. Primordial region 

 umbonate on superior surface, a feature which in very thin 

 examples is visible on inferior side as well as superior. Surface 

 of test ornamented on both sides (witli the exception of final 

 segment) by thickly set minute tul^ercles. Diameter, -^\ in. 



This variety is distinguishable from the type by its greater 

 lateral compression, fewer chambers, irregular septation on in- 

 ferior surface, umbonate features of early chambers, and the 

 general distribution of ornamentation on both faces. It is 

 moderately common in the material from the Adelaide Bore, and 

 is one of the most interesting species of the section. The 

 " Challenger " localities for the sj^ecies were Phillippine Islands, 

 New Hebrides, and coast of the Korea. 



Genus — Anomalina, d'Orhigny. 



43. A. ammonoides, Reuss. Rare. 



Genus — Pulvinulina, Parker and Jones. 



44. P. Haiierii, d'Orb. Rare. 



45. P. re2)anda, F. and M. Rare. 



Genus — Rotalia, Lamarck. 



46. R. Soldanii, d'Orb. Rare. 



The Foraminifera, as determined from the material examined, 

 have been referred to 46 species, belonging to 23 genera, and 

 includes one variety not hitherto described. The Foraminifera as 

 a whole bear a striking resemblance to those found in the Lower 

 Bed of the Muddy Creek section, Victoria (vide Trans. Roy. Soc. 

 S. Aus., vol. XII., p. 1), there being no less than 35 species com- 

 mon to the two localities, whilst only 11 are found in the Kent 

 Town material which are unrecorded from Muddy Creek. It is 

 also interesting to note that of the 35 species referred to, 16 are 

 common to both the Upper and Lower Beds of Muddy Creek, 

 whilst the remaining 19 are found in the Lower Bed only. The 

 importance of the last mentioned fact will be understood when it 

 is stated, that whilst 19 species distinctive of the Lower Bed are 

 found in the Kent Town material, not one of the species limited 

 to the Upper Bed of Muddy Creek has been detected in the Kent 

 Town Bore. Tlie pal^eontological evidence is therefore very 

 definite in leading us to assign a geological age to the marine 

 beds of the Kent Town Bore closely synchronous with those 

 of the Inferior Beds of Muddy Creek, which, as determined 

 by Prof. Tate from the higher organisms, must be low down in 

 the Tertiary series. The remarkable aflinities which the 

 foraminiferal fauna exhibit to the Lower as compared with the 



