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



chambers ; c, flat surface ; d, specimen of largest chambers : all 



magnified. 

 Fig. 5. N. Ramondi. mihi : a, marginal view, nat. size ; b, flat surface : 



c, spire and chambers ; d, specimen of largest chambers : all 



magnified. 

 Fig. 6. A', kelatensis, n. sp. : a, marginal view, nat. size; b, fiat surface; 



c, spire and chambers ; d, specimen of largest chambers : all 



magnified. 

 Fig. ~. Comnites Cooki. nov. gen. et sp., lateral view: a. conical surface; 



b, basal surface ; c, vertical section, nat. size ; d, central portion 



of the spire and chambers magnified., as seen on the surface after 



the incrustation of the apex has been removed. 



e, vertical section of half the fossil, showing — 1, incrustation ; 

 2, lateral view of chamber-layer ; 3, horizontal layers of cham- 

 bers ; 4, opake white columns of condensed shell- substance, as 

 in Orbitoides dispcuisa. 



f, Basal surface, showing — 1, ends of the columns of white 

 substance ; 2, ends of the columns of chambers ; 3, lines of sepa- 

 ration between the chambers. 



g, Horizontal section, showing — 1, part of the spiral chamber- 

 layer ; 2, truncated ends of opake white columns ; 3, ditto of 

 columns of chambers. 



X.B. d, e,f. g are all diagrams. 



Plate XVI. 



Fig. 1. Orbitoides dispansa. magnified twice the size of the specimen. 



a, Portion of surface, magnified, showing — 1, ends of the co- 

 lumns of white condensed shell-substance ; 2, ends of columns 

 of chambers ; 3, hues of separation between the columns of 

 chambers. 



b, Vertical section of entire fossil, the lower part not shaded, 

 showing — 1, the horizontal chamber-layer, and, 2. the radiated 

 arrangement of the columns of chambers and opake white columns 

 of condensed shell-substance. This figure has been more or less 

 proportionally magnified for comparison with the corresponding 

 figure (opposite of Orbitolites Mantelli. 



c, Portion of surface greatly magnified, showing — 1, ends of 

 the opake white columns, in which are seen points representative 

 of still smaller columns, of which the larger ones are composed ; 

 2, ends of the columns of chambers ; 3, lines of separation 

 between them ; 4, tubular communications between the cham- 

 bers. 



d, Vertical section of part of one of the columns of condensed 

 shell-substance (I) with portions of columns of chambers on 

 each side (2, 2) ; 3, vertical tubuli of the test uniting the 

 chambers. 



e, Horizontal section, stdlmore magnified, showing — 1, column 

 of condensed shell-substance : 2, chambers laid open ; 3, section 

 through the test, showing the truncated ends of the vertical tu- 

 buli ; 4, tubes of intercommunication between chambers of the 

 same layer ; 5, truncated ends of ditto ascending to the chambers 

 of the next layer, or terminating upon the surface, as the case 

 may be. 



/, Vertical section of columns of chambers, to show the tubes 

 of intercommiuiication between the chambers passing up in a 



