OF WESTERN SIND. 147 



The apical disk is concealed by matrix, but is probably central, or only very 

 slightly excentric in front. 



The ambulacra are flush with the surface of the test and lanceolate in outline ; and 

 the two lines of inner pores are straight, and converge gradually from the ambitus to the 

 apex. The greatest width is at about two thirds the distance from the apex to the 

 margin, the broadest part of the poriferous zone being somewhat nearer the apex ; 

 from this point of greatest breadth the poriferous zone contracts gradually until the 

 margin is reached, the petaloid portion extending almost to the ambitus. The pori- 

 ferous zone at its broadest part is five eighths of the width of the interporiferous area. 

 The interporiferous zone is widest at the margin, and is there a little more than twice 

 the width of the broadest part of the poriferous zone. The conjugate pores of the 

 petaloid portion of the ambulacra are united by a well-defined furrow, and adjoining 

 pairs are separated by a rather narrow septum ornamented with a single line of small 

 miliary granules. 



The state of preservation of our specimen unfortunately does not permit of any 

 remarks being made on the character of the ornamentation of the test. 



The peristome is entirely hidden by a mass of matrix which covers a large portion 

 of the actinal surface, and leaves only a part of the posterior mai'gin of the periproct 

 exposed. The aboral margin of this aperture is well rounded, and is probably distant 

 from the ambitus nearly the length of the periproct. 



Memarks. This species is readily distinguishable from the other Sindian forms of 

 Amblypygi ; and its nearest ally is to be found in A. alius, nobis, from the white lime- 

 stone of Kachh (Cutch). The present species differs chiefly in the following points, 

 viz. : — the more elongate and oval test, which is less in height and also much less bombous 

 dorsally throughout the posterior half; the more generally tumid character of the 

 actinal ' surface, and the absence of the transverse depression or curvature of that area, 

 which is more or less conspicuous in the longitudinal profile-view of the test in A. alius ; 

 the ambulacral petals are much narrower, and the interporiferous areas more con- 

 tracted, and the periproct is smaller, narrower, and placed at a greater distance from 

 the margin. 



Dimensions. 



millim. 

 Length of the test 74 



Breadth of the test 66 



Height of the test 39 



Greatest width of the poriferous zone 2'50 



Width of the interporiferous area at this part ... 4 



Greatest width of the interporiferous area . . . . 5 '5 



Greatest width of an antero-lateral petal .... 9 



The proportion of length to breadth =: 1 : 0'89. 



The proportion of length to height = 1 : 0-52. 



Localiiy. In the Khirthar series of strata. Outer (eastern) ridge of the Kambhu 

 range, west of Batchani on the Bavan. Survey-number -^^. 



