MR. H. B. BRADY ON SACCAMMINA CARTERI. 277 



whilst that of S. Carteri often shows a tendency to produce 

 loose cancellated growths on its inner surface. It is an interest- 

 ing fact, however, that the pakeozoic fossil should have its near- 

 est known ally in a species living abundantly on the coast of 

 Norway at a depth of four hundred and fifty fathoms. 



The Saccammina-be&s have not yielded any great variety of 

 Foraminifera, though subjected to very careful search. Small 

 specimens of Trochammina gordialis, P. and J., are not uncom- 

 mon, and a few examples of a somewhat peculiar modification 

 of Textularia, which has attracted the attention of observers 

 elsewhere, have been found. There still remain, however, some 

 doubtful organisms to be worked out. The Textularia alluded 

 to is a stout arenaceous variety, frequently Bigenerine in its 

 mode of growth, and with an anomalous aperture, sometimes 

 labyrinthic, but more frequently consisting of two or three dis- 

 tinct circular pores. Mr. John Young, of Glasgow, has a num- 

 ber of beautiful specimens of this form, and I find, in my notes 

 on his collection of Carboniferous Foraminifera, that I have the 

 MS. name Textularia antiqua appended to it. 



Postscript. — During the month which has elapsed since the 

 above was written Dr. Savage has continued his search for this 

 fossil in the Alston district, and I hear of his success just in time 

 to append some particulars which he has been good enough to 

 forward me relative to its occurrence. 



He says, "I first found the fossil in a quarry between here 

 (Nenthead) and Alston. It occurs plentifully in the lowest post 

 but one of the four-fathom limestone. The loivest post, resting 

 on the Natterass Gill hazel, is two feet to two feet six inches 

 thick, and the miners tell me that it is usually the hardest part of 

 the formation. The Saccammina bed which immediately over- 

 lies it is four to six inches thick, and distinct. I have traced 

 the bed, still full of the fossil, wherever it is exposed along the 

 sides of the Nent towards Nenthead. I have also examined the 

 four-fathom limestone nearer Alston, but have been unable to 



