OF WESTERN SIND. 59 



A line of single pores passes from the inner set of each poriferous zone over the 

 margin, including a space which extends close beyond the end of the petals and contracts 

 towards the peristome, where there is a slight flaring and apparent doubling of a few 

 pores. The poriferous zones are rarely unequal, and then only in a slight degree. 



The peristome is less excentric than the apical system, is large, open, transverse, 

 elliptical, with the front rather sharply curved, and broadest from side to side. The 

 interambulacral portions of the mouth are nearly vertical and are profusely granular, and 

 there is a faint broad bourrelet-ridge. The phyllodes are small, but there is a doubling 

 of pores, and two pores are seen within the peristome. 



A band of miliaries with traces of zigzag lines, more or less worn, exist between 

 the peristome and the periproct, which in large specimens is inframarginal or slightly 

 obliquely placed in the margin itself. It is large, ovoid, widely open, and the length is 

 longitudinal. It is close to or at the margin, and has a point or rudimentary rostrum 

 overhanging it above. 



The ornamentation of the upper part of the test is of small tubercles with distinct 

 scrobicules ; and the raised surface between them is minutely granular, with microscopic 

 miliaries. The same ornamentation is on the interporiferous zones. The inter- 

 ambulacra are slightly raised between the petals and close to the apical system. The 

 tubercles are larger actinally and less crowded there. 



Length of largest specimens rather more than 1-j^ inch, breadth l-j^- inch, 

 height -j% inch. 



Locality. North by east of Petiani, west of Kotri. Survey-number G fffj. 

 Jhirak, and hills east of Lynyan. Survey-number G fff;. 



Other specimens: — 



Length Ij^ inch, breadth 1 inch, height -^ inch. In specimens of this length 

 the posterior projection is very evident, and the periproct is oblique on the margin, 

 ovoid, large, open, and longitudinal in its great axial direction. 



Smaller specimens lyg- inch in length, are -^ inch broad, and rather over -^^ inch 

 in height. 



Locality. East of Kandaira, on the Vero plain. Survey-number G ff f. 



Another, 1 inch long, is -^ inch broad and nearly --^ inch high. 



Locality. Hills east of Lynyan. Survey-number G ff f . 



Its periproct is inframarginal and very slightly transgressive. 



A smaller, -^ inch long, is -^ inch broad and -^ inch high. A second, -j% inch 

 long and -^ inch broad, is ^ inch high, and the mouth is more central, and the huge 

 longitudinal periproct is oblique on the margin and rostrated. 



One, -^ inch long, rather over -^ inch broad, is just under -^ inch in height. 



Other measurements are: — 



Length j%, breadth yq, height -^^ inch. 



