452 ME. E. B. NEWTON OK" A 



Fig. 4. Chlamys {Mqtiipecten) Malvinm affin. Koyun Daghi. 

 5, Cardium sp. indet. Seir Hill. 

 6, 7. Cardita sp. indet. Koyun Daghi. 



8. Latins crispus. Koyun Daghi, 



9. Turritella gradata, var. Koyun Daghi. 



10. Turritella rotifera afBn. Koyun Daghi. 



11. Turritella Archimedis. Koyun Daghi. 



Plate 30. 

 Figs. 1,2. Venus Aglaiorcs. (Fig. 2=sculpturemagnified.) Guverehin Kala. 

 3,4,5. Meretrix persiensiSi n. s]). Guverehin Kala. 

 6, 7. Meretrix allied to incrassata. Guverehin Kala. 

 8, 9. Pyrula cingulata. Guverehin Kala. 

 10, 11. Cassis sp. Guverehin Kala. 



The figures on both Plates are drawn natural size, \nth the exeeption of fig. 2 

 on Plate 30. 



NOTE ON A PALEOZOIC LIMESTONE. 



By E. BuLLEN Newton, F.G-.S., of the Britisti Museum 



(Natural History). 



Among Mr. E. T. Griinther's geological specimens from North- 

 western Persia is a fragment of dark slate-coloured limestone, 

 highly crystalline, and intersected with numerous calcite veins, 

 which was obtained from the island of Shazalan on Lake Urmi. 



A microscopical examination of this rock proves that its 

 structure is largely made up of f oraminiferal remains which, with 

 the kind assistance of Mr. Frederick Chapman, have been deter- 

 mined as ^ndothyra Boivmanni, Phillips, Valvulina hicUoides, 

 Brady, and Nodosaria radicula, Linnaeus. 



Grenerically, the most interesting of these forms is Endothyra, 

 being essentially Carboniferous, the other genera having a far 

 wider range in geological time. 



The nearest habitat to Shazalan which has hitherto yielded 

 E. Bowmanni appears to be Sloboda, in the province of Toula, 

 European Eussia, reported some years ago by V. von Moller *. 



So far as can be ascertained, there is only one species of 

 Palgeozoic foraminifera yet recorded from this region, viz., 



* MoLLEE, V. V. — "Die spiral-gewundenen Foraminiferen des Eussischen 

 Kohlenkalks," Mem. Ae. Imp. Sei. St. Petersbourg, 1878, ser. 7, vol. xxv. no, 9, 

 p. 96, pi. iv. fig. 3, & pi. xii. fig. 2, 



