18G7.] Appendix. 211 



imperforate. The spiral oral arms appear to fill nearly the whole of 

 the shell, leaving only a small hour-glass-shaped space in the centre. 



This shell varies a good deal, some specimens being much more 

 transverse than others, some being very flat and others less so. It 

 was ;i gregarious animal found now accumulated in lenticular beds. 



Zeawan and Zowoor. The name proposed is derived from the first 

 few specimens which were found having been discovered in block* of 

 stone of a Buddhist ruin. 



Aihyris $p. probably A. Royssii, (UEceilU) PI. II. fig. 3-3. 



Less transverse than the preceding and ornamented with fine and 

 closely set concentric lines of growth strongly marked. Foramen 

 generally obliterated. Imprints showing the fringe-like expansion 

 round the margin are very common in the brown shale of Zeawan. 

 The shell is abundant in all the localities where the Zeawan bed has 

 been observed in Kashmir and the Punjab. 



Eemark. Several other species of Athyris were discovered at 

 Zeawan, Zowoor and Barns, some having the general facies of our figs- 

 2 and 3 and being probably varieties of the A. Royssii. Others with 

 the umbo-marginal diameter longer than the transverse and being 

 probably narrow varieties of the A. subtilita. Others again have the 

 general facies of the T. Diyona, and others the carinated appear- 

 ance of the Ath. Navicula (Sow). 



Retzia radialis (Fit ill), var. yrandicosta (Davids.) 



Journal, Geological Society, Vol. XVIII. p. 28. PI. I. fig. 5. 



Very frequently met with at Zeawan and Zowoor, and also in the 

 Rotta Roll. 



Streptorynchus crenistria, Phill. var. robustus. 



Op. cit. p. 30. PI. I. fig. 16. 



This shell attains a very large size in Kashmir and in the Punjab, 

 specimens five inches in tranvserse diameter not being rare. Fragments 

 of this shell, and young shells, swarm at Zeawan and in some beds in 

 the Rotta Roh. 



Orthis resupinata, Martin. 



Op*, cit. page 31. PI. I. fig. 15. 



Abundant in the brown shale of Zeawan, Kashmir. 



Orthis sp. PI. HI. fig. 3. 



A cast of an Orthis belonging to the type of the Orthis plicatuUa 



