366 Mr. H.J. Carter on the Fossil Foramiuifera of Scinde. 



of from 10 to 20 fathoms, and on our own coast is obtained 

 universally in deep water. Its occurrence so near the surface in 

 the Grotto is an exceptional case, and is dependent, no doubt, on 

 the peculiar character of the locality, which in many respects 

 must resemble its more usual habitat. 



I have reason to believe that a second species of Gorgonia, 

 somewhat allied to the verrucosa, is met with on our western 

 coast, but I am not yet in a position to speak with confidence 

 about it. 



[To be continued.] 



XXXVII. — Further Observations on the Structure of Foramini- 



fera, and on the larger Fossilized Forms of Scinde, S^c, including 



a new Genus and Species. By H. J. Carter, Esq., F.R.S. 



[Continued from p. 333.] 



Further Observations on the larger Fossilized Forms of Forami- 



fera in Scinde, S^c. 



Operculina, D'Orbigny. 



" 3. 0. ?" — See my first paper on the larger forms of 



Foramiuifera in Scinde, &c. (Ann, & Mag. Nat. Hist. vol. xi. 

 p. 167, 1853). This Operculina, which I did not like to name, 

 as I did not know whether or not it was a new species, has been 

 called by MM. d'Archiac and Haime (p. 347) " O. Tattaensis," 

 after the place where it was found. 



Obs. — Operculina is much more nearly allied to Assilina than 

 Assilina to Nummulites. N. spira, which is an Assilina, is but 

 a gigantic Operculina with enlarged spicular cord. 



Assilina, D'Orb. 



" 1. A. irregularis, H. J. C." (Ann. Nat. Hist. /. c. p. 168).— 

 This has been rightly identified by D'Archiac and Haime (p. 343) 

 with N. spira, De Roissy. Nevertheless it is an Assilina accord- 

 ing to D'Orbigny's definition, and so closely allied to Operculina 

 that the spicular cord and the septa of the chambers (that is, the 

 spire altogether) are, with the exception of the central part, as 

 visible as in Operculina. 



Largest size*. — Breadth Y^ inch (36^ millim.). 



Loc. Valley of Kelat (Dr. Cook)t. 



Associates. — Assilina exponens, with varieties a and b, A. 



* " Largest size" means the largest in my possession ; " breadth " means 

 the longest horizontal diameter; and "thickness" the greatest diameter at 

 right angles to this. 



t Dr. Cook, Bombay Array, late Medical Officer to the British Agency 

 at Kelat. The name thus attached indicates the source from which the 

 fossil was obtained. 



