200 



LAB YRINTHOD ONTIA . 



Genus LIMNERPETUM, Fritsch \ 

 Syn. Microdon, Fritsch 2 . 

 The type and only described genus. All the species are small. 



Limnerpetum elegaits, Fritsch 3 . 

 Yentral scutes small, ovoid, with concentric and oblique sculpture ; 

 less wide than in L. laticeps. 

 Hab. Europe (Bohemia). 



R. 357. Electrotype from a fragment of shale, showing the greater 

 part of the skeleton. The original is the type, and was 

 obtained from the Gaskohle (Lowest Permian) of Nyf an 

 (Pilsen). The specimen forms the subject of pi. xxxiv. of 

 vol. i. of Fritsch 's ' Fauna der Gaskohle.' 



Purchased, 1882. 



Limnerpetum laticeps, Fritsch 4 . 



Syn. Microdon laticeps, Fritsch 5 . 



Yentral scutes small, much broader than long, with a thickened 

 posterior border and concentric sculpture. Total length about 0,100 

 (3-9 inches). 



Hab. Europe (Eohemia). 



R. 358. Electrotype from a fragment of shale, exhibiting the 

 nearly entire skeleton. The original, which is the type, 

 was obtained from the Graskohle (Lowest Permian) of 

 Tfemosna (Pilsen), and is figured by Fritsch in his ' Fauna 

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



Limnerpetum obtusatum, Fritsch 6 . 



Yentral scutes of medium size, ovoid, with radiating sculpture ; 

 those of thoracic region with thickened posterior border, which dis- 

 appears in the pelvic region. Body relatively larger, and tail 

 shorter than in L. laticeps; total length about 0,160 (6*3 inches). 



Hab. Europe (Bohemia). 



R. 359. Electrotype from a fragment of shale, showing the nearly 

 entire skeleton. The original is the type, and was 

 obtained from the Gaskohle (Lowest Permian) of Nyf an 

 (Pilsen). It is figured by Fritsch in his ' Fauna der Gas- 

 kohle/ vol. i. pi. xxxv. figs. 1-7 ; the ventral scutes being 

 figured on pp. 155-156, figs. 95-98. Purchased, 1882. 



1 Fauna der Gaskohle, vol. i. pt. iii. p. 147 (1881). — Limnerpeton. 



2 Sitz. k. bohm. Gfces. Wiss. for 1875, p. 73 (1876).— Preoccupied. 



3 Fauna der Gaskohle, vol. i. pt. iii. p. 152 (1881). 



4 Ibid. pt. i. p. 28 (1879).— Microdon. 5 Loc. cit. 

 « Ibid. pt. iii. p. 154 (1881). 



