OF WESTEEN SIND. 89 



petal, and crosses directly over the keel to the other side. In front, the broad fasciole 

 at the end of the antero-lateral ambulacra passes forwards inwards, mounting the flanks 

 of the keel of the odd ambulacrum to a gibbosity, and becomes narrower just before 

 reaching this. Thence it passes forwards, widening, and then diminishing to a point on 

 the top of the keel well forward and in front of the first visible pairs of pores. It crosses 

 the floor of the groove in an arched form, convexity forwards. The structure is that of 

 exceedingly minute granules. 



The lateral fasciole is very narrow, and starts from the gibbosity posterior to the 

 antero-lateral petals and about halfway between their ends. It passes obliquely 

 backwards and downwards, and reaches the margin below the truncation for the peri- 

 proct. Curving downwards around, it meets its fellow of the opposite side. 



The ornamentation is remarkable. It consists at the ambitus on either side of 

 the anterior groove of a few large tubercles on one side of a nearly circular and some- 

 what imbricating raised scrobicule. A few miliaries exist on the test, where there 

 are no scrobicules. Towards the groove and above, the tubercles are closer and 

 smaller, and they become smaller and closer on the keel and its slopes, the smallest 

 being near the apical system. 



On the flanks of the test in the anterior interradium the tuberculation is larger 

 than on the keel, and it is comparatively wanting along the sutures and along the 

 continuation of the petaloid ambulacral plates. 



Externally and on the flanks of the test the ornamentation is at first small and 

 close, and then it gradually increases in size and sparseness. A medium-sized tubercu- 

 lation, rather close, covers the posterior interradial. The tubercles are rather low and 

 squat, but they have small mamelons and are perforate and crenulate. In some 

 places there are circlets of, or irregularly-placed miliaries ; and the scrobicules sometimes 

 are broken up, as it were, into circlets of miliaries. On the inner slope of the keels 

 of the anterior interradials the tubercles are rather larger and scarcer than just on the 

 outer slope ; but they are largest nearest the pores, and become smaller in front. 



The length of the specimen is 1^ inch, the breadth is I-^^- inch. 



Locality. Gari-wari Gorge, on the road from Badha to Lynyan, in the Kanikot 

 series. Survey-number G ff ^. 



Illustrations of the Species in Plate XX. 



Fig. 10. The test, from above. 



11. The test, from behind. 



12. Ornamentation near the ambulacra : magnified. 



13. An antero-lateral petal : magnified. 



14. The apical system, from a specimen from Kach : magnified. Possibly 



closely allied, but not of the same species. 



There is considerable resemblance between this form and several species of 

 ScMzaster. The shape of the details of the upper surface cause it to resemble somewhat 



