354 THE FOSSIL ECHINOIDEA 



Locality. Mazarani Nai, hills west of Larkhana. Survey-number G ^H-. 

 This last group of small specimens contains young forms, and the carinate nature 

 of the post-apical surface is distinct in some. 

 Other localities : — 



Nari Nai. Survey-number G ^i-^^. A carinate form. 

 Pir Gaji. Survey-number G ^H-. 

 Hills S.E. of Kot-Baruch. Survey-number G ^H-. 

 Naig-Nai valley. Survey-number G ^q-- 



Illustrations of the Species in Plate LIV. 

 Figs. 1-9. Breynia carinata, d'Archiac. Abactinal views, natural size. 



Elustrations of the Species in Plate LV. 

 Fig. 1. Actinal view oi Breynia carinata, d'Archiac. 



2. Side view. 



8. Posterior view, showing the subanal fasciole. 

 4. Magnified view of apical system. 



3. Peristome: magnified. 



6. Actinal tubercle : magnified. 



7. Deformed tubercle : magnified. 



8. Abactinal large tubercle: magnified. 



Subfamily BBISSINA. 



Genus BEISSUS, Klein, 1734. 



A much, worn specimen from the Gaj series shows the generic characters of Brissus, 

 except the subanal fasciole, which is not preserved. The apex is far in front, the 

 anterior ambulacrum evidently was flush with the test, the antero-lateral are transverse 

 and rather over concave, and the posterior are longer than the anterior, form a sharp 

 included angle, reach close to the posterior edge of the test, and have a high and 

 horizontally topped keel between them. There is a trace of the lateral fasciole on one 

 side. 



Locality. Gaj series or Miocene of Sind : Scarp of the M61 Plateau. Survey- 

 number G ^i^. 



1. Brissus, sp. Plate LV, Fig. 9. 



There are some very large specimens in the collection from the Gaj series and also 

 one small form, which are, unfortunately, so badly preserved that the specific characters 

 are not shown in any one. In a large form the actinal surface is perfect and the 

 truncated posterior region also ; but it is only by taking the well-preserved parts of 

 several specimens that an idea can be obtained of the nature of the abactinal 



