168 Mr. H. J. Carter on Fossil Foraminifera in Scinde, 



sing to the last, wbich is l-24tli inch broad ; each whorl over- 

 lapping or embracing, with its internal border, the external mar- 

 gin of the preceding one, which is rounded and cord-like. 

 Chambers numerous, reflected ; septa reflected, apparent on both 

 sides. Diameter of largest specimens 5-12ths of an inch ; 

 thickest part, which is the margin, l-36th of an inch (flgs. 3, 4). 

 Lac. Scinde; in company \^ath Alveolina, near the town of 

 Tatta. 



Obs. In this species, which is twice the diameter of the last 

 and generally more horizontal, the whorls are more numerous 

 and the spire increases more gradually. I could not discover 

 the intercameral communication. 



AssiLiNA, D'Orbigny. 



1. A. irregularis (H. J. C). Equilateral, discoidal, more or 

 less wavy, compressed, thin. Centre depressed, margin thickened, 

 rounded, cord-like. Spire more or less irregular, projecting on 

 both sides, excepting in the centre, where it is nearly obscured ; 

 consisting of nine whorls increasing gradually towards the pen- 

 ultimate, which is l-12th inch wide ; each whorl overlapping or 

 embracing, with its internal border, the external margin of the 

 preceding one, which is thickened, rounded, and cord-like 

 throughout the spire. Chambers subquadrangular, oblong, ir- 

 regular in size, presenting a number of minute granulations over 

 their surface externally. Septa straight, radiating, and a httle 

 reflected, evident on both sides except in the centre. Diameter 

 of lai'gest specimens ll-J2ths of an inch; thickest part, which 

 is the margin, l-24th of an inch (figs. 5, 6). 



Loc. Scinde. 



Obs. This, although somewhat resembling the last-described 

 species of Operculina, difi"ers from it in being much larger and 

 coarser in form, in the extreme irregularity of its spire and de- 

 velopment generally, the depression in the centi-e, the obscurity 

 of the three first whorls, and in the penultimate whorl being the 

 broadest. I could not discover the intercameral communication. 



2. A. ? Equilateral, discoidal, slightly wavy, thick, 



smooth, depressed in the centre, angular at the margin, present- 

 ing broken curvilinear lines on the surface with minute granu- 

 lations between them, arranged in a spiral form, radiating from 

 the centre, indicating the position of the spire and septa. Inter- 

 nally whorls more or less wavy, more or less irregular in breadth, 

 the largest between the centre and the circumference (2-48ths 

 of an inch broad) ; about nineteen whorls may be counted within 

 half an inch of the centre. No chambers above or below the cen- 



ral plane. Diameter of largest specimens 1^ inch ; thickest 



