212 LABYRINTHODONTTA. 



R. 348. Electrotype from a fragment of shale, showing the skeleton 

 of a larva. The original was obtained from the Gaskohle 

 (Lowest Permian) of Nyf an (Pilsen) ; and is figured by 

 Fritsch in his ' Fauna der Gaskohle/ vol. i. pi. i. fig. 1. 

 Except for its better state of preservation, this specimen 

 can scarcely be distinguished from the larvae of P. petrolei. 



Purchased, 1882. 



R. 1604. Fragment of shale with the skeleton of a larger individual ; 

 from the Gaskohle of Tremosna (Pilsen). 



Purchased, 1889. 



Family Position Uncertain. 

 The following genera are included by Fritsch in the preceding 

 family, but only the skull is known. The parasphenoid has the 

 expanded base characteristic of Branchiosaurus. 



Genus SPARODUS, Fritsch 1 . 

 Syn. Batrachocephalus, Fritsch 2 . 



Skull with strong marginal teeth, and a number of conical teeth 

 on the anterior bones of the palate. According to Fritsch's resto- 

 ration the palatines are interposed between the vomers and maxillae. 



Sparodus validus, Fritsch 3 . 



Syn. Batrachocephalus validus, Fritsch 4 . 



The type species. Length of skull about 0,033 ; 17 mandibular 

 teeth, of which the first three are double the size of the others ; 27 

 teeth in each vomer, and 11 in each maxilla ; outer surface of man- 

 dible smooth. 



Hah. Europe (Bohemia). 



R. 345. Electrotype from a fragment of shale, showing the palatal 

 aspect of the skull. The original, which is one of the 

 types, was obtained from the Gaskohle (Lowest Permian) 

 of Nyr an (Pilsen) ; and is figured by Fritsch in his ' Fauna 

 der Gaskohle', vol. i. pi. viii. fig. 1. Purchased, 1882. 



R. 344. Electrotypes from two fragments of shale, exhibiting the 

 mandible and part of the palate. Originals from Nyfan ; 

 figured by Fritsch, op. cit. pi. viii. figs. 4, 5. 



Purchased, 1882. 



1 Fauna der Gaskohle, toI. i. pt. i. p. 84 (1879). 



2 Sitz. k. bohm. Ges. Wiss. for 1875, p. 76 (1876).— Preoccupied by 

 Bleeker, 1846. 3 Loc. cit. — Batrachocephalus. 4 Loc. cit 



