106 H. SIDEBOTTOM ON TWO NEW SPECIES OF CASSIDULINA, 



or depth. In the fossil condition the genus is not very common r 

 it makes its appearance in the Eocene period and is represented 

 from time to time in beds of later geological age." 



Cassidulina elegans sp. nov. (PI. 4, Fig. 1). 



Test somewhat globular, slightly compressed at the sides.. 

 Sutures sunk, the upper portion of the chambers being raised and 

 sometimes almost angular. The lower parts of the chambers 

 are more transparent than the upper. The orifice is an oblique^ 

 curved, loop-like slit with a raised edge. The test is of a delicate 

 cream-colour, is slightly roughened and the interdigitation of 

 the chambers is well marked. 



The two specimens in my possession are evidently in the recent 

 condition. They were given to me by my brother-in-law, who 

 had them from the late Mr. Chaffers, of Manchester. Unfor- 

 tunately no locality is indicated. I have, by the courtesy of 

 Mr. Chaffers's son, gone through a large portion of his father's 

 collection of Foraminifera in the hope of meeting with duplicate 

 specimens marked with the locality, but have failed to find any 

 trace of them. The two shells vary a little in shape, the one 

 figured being rather longer than the other and, therefore, not so 

 globular. 



The one figured is also more regularly built up than the other 

 specimen. This latter has the " coil " twisted a little to one side. 

 There are not many species in this genus, so that it is very 

 interesting to chronicle a really good find. 



Within a few days of writing the above, I was looking through 

 some slides of Foraminifera, now in my possession, belonging to 

 the late Mr. Thornhill, of Castle Bellingham, Ireland, when I 

 came upon a decorated Cassidulina with the locality given. 

 Looking through the pill-box of material in which the specimen 



