NYRANIIDJ2. 



167 



R. 1451. Electrotype of a slab of shale showing the frontal aspect 

 of the imperfect cranium, wantiDg the greater part of the 

 external sculptured layer. The original, which is one of 

 the types, was obtained from the Gaskohle (Lowest 

 Permian) of JNyf an (Pilsen) ; and is figured by Fritsch in 

 his 'Fauna der Graskohle/ vol. ii. pi. lxii. fig. 1. 



Purchased, 1888. 



Jyrania trachystoma. — Palatal aspect of the cranium ; from the Gaskohle 

 (Lowest Permian) of JNyran, Bohemia. ^. V, vomer ; P, palatine ; Ps, 

 parasphenoid ; Pt, pterygoid ; QJ, quadratojugal. {After Fritsch.) 



R. 1452. Electrotype showing the left half of the oral aspect of the 

 palate. The original is one of the t)'pes, and was 

 obtained from Nyf an ; it is figured by Frit3ch, op. cit. 

 pi. lxiii. fig. 2. The denticules on the pterygoids are 

 very distinct ; the rough surface of these bones resembling 

 that of Anihracosaurus as figured by Atthey in the ' Ann. 

 Mag. Nat. Hist.' ser. 4, vol. xviii. pi. ix. Purchased, 18S8. 



R. 1453. Electrotype exhibiting the bones of the palate. Original 

 from Nyfan ; figured by Fritsch, op. cit. pi. lxii. fig. 5. 



Purchased, 1888. 



R. 1454. Electrotype showing one of the bones of the palate (appa- 



