144 THE FOSSIL ECHINOIDEA 



Localities. 

 In the Khirthar series of strata : — 



i. River-section east of Trak. Survey-number ^?|?. 



ii. Hilly ground south-east of Trak Hill. Survey-number ^|^. 



iii. Kuni range, east of Trak. Survey-number ^|^. 



iv. North-east of Kale-ka-Kua, seven miles south-east of Trak. Survey-number 



G302 

 127 • 



V. Exact locality not known ; said to be near Kotri, probably the hills vrest of 

 Kotri. Survey-number ^|^. 



vi. Twenty-four miles west of Kotri (entering the hills on the road to Biila Khan's 

 Thana). Survey-number ^°. 



vii. Gorge of the B aran river, north-east of Bula Khan's Thana. Survey-number 



G280 



71* • 



viii. Eri Hill (south-west side), Sumbak range. Survey-number ^|5?. 



Variety conicus: 



ix. Dharan Pass (east side), near Laki. Survey-number ^^. 



Illustrations of the Species in Plate XXVI. 



Fig. 1. Abactinal view of the test: natural size. 



2. Actinal view of the test: natural size. 



3. Longitudinal profile of the test : natural size. 



4. Apical disk, from another specimen, slightly weather-worn : magnified. 



5. Portion of the actinal surface of the same specimen: magnified. 



6. Arrangement of the ambulacral plates near the middle of a petal : mag- 



nified. 



7. Arrangement of the ambulacral plates near the ambitus : magnified. 



8. Arrangement of the ambulacral plates on the actinal surface, midway between 



the peristome and the margin : magnified. 



9. Abactinal view of the test of a young specimen, measuring 40 millim. in 



length : natural size. 



10. Longitudinal profile of the same specimen : natural size. 



11. Abactinal view of the test of a young specimen, measuring 58 millim. in 



length : natural size. 



12. Actinal view of the same specimen : natural size. 



13. Longitudinal profile of the same: natural size. 



14. Variety conicus. Longitudinal profile: natural size. 



2. Ambltpygus patell^foemis, Duncan 8f Sladen. Plate XXVII, Figs. 1-3. 



Test subdepressed, marginal contour subovoid, the length being distinctly greater 



