52 THE FOSSIL ECHINOIDEA 



zones suddenly diminish in breadth, and the direction of the pores becomes oblique, 

 and that of the grooves also ; so that whilst the direction of the inner pores is nearly 

 in the line of the series, that of the outer set describes about one quarter of a 

 circle. A single row of pores is continued from each zone over the ambitus to the 

 peristome, where the direction becomes slightly irregular and alternate ; but there is 

 no doubling there, nor is there a true phyllode. The interambulacra are swollen 

 and somewhat boldly convex close to the apex ; and they are more rounded and tumid 

 midway to the ambitus. 



The peristome is central, large, deep, transversely elongate ; and the projecting, 

 rounded, and bluntly pointed bourrelets have grooves between them for the gutter- 

 shaped ends of the ambulacra. 



The ornamentation is slightly largest actinally, and it decreases towards the am- 

 bitus. It is subequal and small on the apical part of the test, and everywhere consists 

 of a raised interscrobicular granular part and sunken scrobicules with small tubercles 

 consisting of a boss and small mamelon, which are not higher than the ordinary 

 level of the test. Traces of crenulation are seen here and there ; and the minute 

 mamelon is perforate. 



The periproct is inframarginal and elongate longitudinally, and it transgresses 

 slightly on the margin, which is less tumid posteriorly. 



Height of the test at the apex 2^^ inches, breadth 4 inches, length 4^;^ inches. 



Locality. North-east of Petiani, west of Kotri. Eanikot series. Survey-number 



ri 280 



^ x; 



.35- 



Illustrations of the Species in Plate XII. 

 Fig. 1. The actinal surface of the test : natural size. 



2. An end of an ambulacrum : slightly magnified. 



3. The ornamentation: magnified. 



4. Part of an ambulacrum, high up : magnified. 



2. CoNOCLTPEus ■?, sp. Plate XII, Figs. 5, 6. 



There is a specimen from the hills east of Lynyan, from the brown Eanikot 

 limestone, which is so much worn that its specific diagnosis is not possible, and the 

 generic is also doubtful. 



The marginal outline is oval and broadest posteriorly ; and the periproct is oval, 

 pointed in front, longitudinal, and transgresses on the margin. The ambitus is tumid, 

 and the abactinal surface is conical, the height being less than the breadth. The 

 ambulacra come rather close to the margin, are widely open ; and the poriferous zones 

 are not very broad, and end in a point. The apex appears to have been central and 

 the ornamentation small. 



Probably it is a species of Conoclypeus ; but the actinal surface is not visible. 



Height of specimen 2^^ inches, breadth 2>-^q inches, length i-^g inches. 



Survey-number G ff y. 



