OF WESTERN SIND. 133 



The poriferous zones are broad, and almost straight in their course after attaining 

 the greatest breadth of the petal: hence the outline of the petals is very slightly 

 petaloid. 



The pores are round, equal, or with the outer pores of a zone slightly largest, the 

 pores of a pair being wide apart and with no trace of conjugation. The pairs of pores 

 are distinct from one another, and there are not more than seven or eight in each zone. 

 The pairs of pores are slightly oblique, and the amount of obliquity increases in each 

 plate towards the outer extremity of the poriferous zone, the outer pore of the last 

 pair being often brought down till nearly in vertical series with the inner pores of the 

 zone. The inner pores of the companion zones of a petal form vertical series parallel 

 with one another, and the interporiferous area is consequently of uniform width ; it is 

 narrower than the breadth of the poriferous zone at its widest part; and in some 

 specimens the surface of the interporiferous area appears to be faintly keeled, or 

 slightly higher than the interradial portions of the test. 



The peristome is central, pentagonal, and with the margin concavely bevelled out 

 of the thickness of the test. The depth of this bevelled margin is somewhat empha- 

 sized by the presence of a slightly elevated ridge round the outer or external edge of 

 the bevel. Owing to the breadth of the bevel, the diameter of the inner pentagon or 

 actual margin of the peristome is very little more than one half that of the outer 

 margin. The sunken edge is ornamented with small miliary tubercles, sunken in small 

 scrobicules and irregularly placed ; and there are a pair of conspicuous, elongately 

 oval, buccal or peristomic pores corresponding to each ambulacrum, the pores of a pair 

 being close together and only separated by a thin dissepiment. There are two small 

 granule-like protuberances, situated above the buccal pores, projecting from the peri- 

 stomial margin. 



The periproct is elongately oval, placed longitudinally and at about midway 

 between the margin and the peristome. The length is twice the breadth, and the 

 length is about the same as the diameter of the inner margin of the peristome. 



The tuberculation of the test is minute, and consists of small primary tubercles 

 sunken in deep scrobicules irregularly distributed over the surface, the intermediate 

 spaces being occupied by comparatively large-sized miliary granules, more or less 

 irregular in their size, development, and prominence. 



Remarks. The high and broadly oval form of the test and the character of the 

 ambulacra appear to separate this variable form distinctly from any Nummulitic species 

 with which we are acquainted. 



Dimensions. The length of the test is 7 millim., the breadth 6-5 millim., and the 

 height 4-25 millim. 



Localities. In the Khirthar series of strata : — i. Sumbak Hill, south-west of the 



Vero plain. Survey-number ^|^, 



ii. East of Band Vero, north-west of Kotri. Survey-number ^||^. 



iii. On the road about four miles west of Kotri. Survey-number ^~. (One 

 imbedded specimen, scarcely determinable.) 



iv. Near Petiani, ten miles west of Kotri, Survey-number ^^. We were at 



