370 Mr. H. J. Carter on the Fossil Foraminifera of Scinde. 



other points mentioned. Some specimens are so thin that they 

 may be termed " papyraceous ;" but they still present compressed 

 cells above and below the central plane, as may be seen by 

 making vertical sections of them. Again, in some localities they 

 appear to be stunted in their growth — if, as before stated, the 

 approximation of the outer turns of the spire may be taken as a 

 sign of full development; for I possess full-grown specimens 

 with approximated turns of the spire, which are not more than 

 half the diameter of the largest forms. 



On the other hand, in comparing young specimens of N. Car- 

 teri with those of N. perforata of equal breadth, viz. 3-24ths of 

 an inch, it will be observed that while the whole of the white 

 puncta are gathered together in the centre of the former, they 

 are more or less scattered and separate in the latter. 



So far as the specimens of N. perforata which Dr. Cook sent 

 from the valley of Kelat go, N. Carteri is not present with them, 

 although it is associated with N. perforata in Upper Scinde. 



In some specimens of N. Carteri the wearing down of the 

 softer substance of the test and the septal lines has caused the 

 harder portions or puncta to project in such a manner as to 

 render the fossil so much like N. Brongniarti (D'Archiac and 

 Haime, pi. 5. fig. 1, &c), that at first sight they would be said 

 to be the same species in this respect. Again, it was my in- 

 attention to the exact position of these puncta (which did not 

 form specific distinctions before MM. d'Archiac and Haime 

 wrote their work) that led me, in the figure which I gave of this 

 Nummulite, to place all the puncta between the septal lines 

 (Add. Nat. Hist. /. c. pi. 7. fig. 9), and MM. d'Archiac and Haime, 

 on this account, to liken it to N. perforata ; whereas it really is 

 more like N. Sismondai ; for puncta are not only scattered be- 

 tween the septal lines, but attached to them as above mentioned. 

 We shall soon see, however, that the presence or absence of 

 these puncta, in specimens of the same species, renders this 

 distinction of less value specifically, perhaps, than it may be 

 generically. 



The spire and columns of N. Carteri are perhaps most like the 

 represention given by D'Archiac and Haime of N. distans (pi. 2. 

 figs. 2 and 2 a), one of their group Laves et Sublavcs; while N. 

 Carteri generally is the nearest approach to this " group " which 

 Scinde produces, at least so far as my knowledge extends. 



"2. N.millecaputV (Ann. Nat. Hist. /. c. p. 169).— This has 

 been identified by D'Archiac and Haime (p. 343) with N. gyzeh- 

 ensis, one of their group of Laves et Sublaves. It came from 

 Egypt, and was merely inserted among the Scinde specimens for 

 comparison. As yet, I have not seen a single specimen of this 

 group from Scinde. 



