OF WESTERN SIND. 209 



viii. On the Eailway six miles south of Bolari. Survey-number -g^. 

 ix. Picked up at Aongar hill, north of Jhirak (near the base of the group). 

 Survey-number -^^-. 



Illustrations of the Species in Plate XXXV. 

 Fig. 10. Abactinal view of the test : natural size. 



11. Actinal view of the test : natural size. 



12. Longitudinal profile of the test : natural size. 



13. A portion of the abactinal surface, to show the apical disk and ambulacra ; 



magnified. 



14. Abactinal view of the test of a young specimen : natural size. 



15. Actinal view of the same : natural size. 



16. Longitudinal profile of the same : natural size. 



2. Metalia soutifokmis, d'Archiac, sp. Plate XXXVI, Figs. 1-5. 



Brissopsis scutiformis, d'Archiac (1850), Hist, des progres de la Oeol. t. iii. p. 251. 



Brissopsis ? scutiformis, d'Archiac Sf Haime (1853), Bescrip. An. foss. de I'Jnde, p. 219, pi. xv, figs. 5a, h. 



MM. d'Archiac and Haime diagnosed the single specimen of this species known 

 to them as follows : — 



Body depressed, scarcely longer than broad, slightly expanded laterally in the 

 median region, a little more elevated behind than in front, subbilobed anteriorly, 

 feebly truncate posteriorly ; apical disk almost central, odd anterior ambulacrum forming 

 a wide and tolerably well-defined groove, granulated, pores distinct ; petaloid ambu- 

 lacra straight, narrow, tolerably large and sulciform, the lateral petals longer and more 

 excavated than the posterior; poriferous zones tolerably broad, distinctly straight, 

 subcostulate, twice as broad as the interporiferous area ; pores very large and closely 

 placed ; peripetalous fasciole scarcely sinuous, and then only a little in front, rather 

 irregular, touching the extremity of the petals. Lateral interambulacral areas much 

 broader than the anterior, and especially than the posterior. Anus marginal ; periproct 

 large, rounded, a little higher than wide. Inferior disk almost fiat, infiated along the 

 median line in front of the anus ; mouth situate at four elevenths of the major diameter 

 from the anterior margin ; peristome subelliptical ; some peristomial ambulacral pores 

 are noticeable. The only individual known was much rubbed ; its length is a little 

 more than 5 centimetres ; its breadth 3 or 4 millim. less, and its height 2 centimetres. 



No mention is made by d'Archiac and Haime of the large, complete, reniform 

 subanal fasciole, enclosing about ten pairs of pores on either side of the subanal 

 pastron, and with very well-defined radiating lines of tubercles in relation to the pores, 

 with which this species is ornamented. The outline of the peripetalous fasciole is very 

 incorrectly represented in the figure given in the ' Animaux fossiles ' (plate xv, fig. 5 a). 

 This fasciole really passes in a straight, unflexed line diagonally across the anterior 

 interradia, and is bent with a sharp angle at the extremity of the antero-lateral petal ; 



