Remeics — Br. Fritsch's Permian Amphibia of Bohemia. 85 



modestum (Fritsch), is known from a lower jaw in which the bone 

 is sculptured and the short conical teeth are of uniform size, which 

 is 2^ times as long as wide. The second species, Limnerpeton 

 laticeps (Fritsch), is 160 mm. long, but badly preserved. It had the 

 form of an Axolotl, and has been restored from a specimen found 

 at Tremosna. There is no indication of the skin. Scale armour 

 was developed on the ventral surface between the pectoral and 

 pelvic regions, where there are 54 rows of short wide scutes, each, 

 row consisting of about 8 scutes. The scales were 4J times as wide 

 us long; they are marked with concentric lines, between which, 

 there are rows of minute punctures. 



The skull is nearly as broad as 

 long, rounded in front. The orbits 

 are large and nearly circular. There 

 were more than 40 small even- 

 sized teeth in the upper jaw, each 

 half a millimetre in diameter, with 

 with a large pulp-cavity. The 

 epiotic bone is small and extends 

 backwards into a short point. The 

 squamosal bone is not divided as 

 in Dawsonia and Melanerpeton. 

 There are 24 presacral vertebras 

 bearing ribs. In the tail 22 caudal 

 vertebra3 can be counted, but there 

 were probably 30, and many of 

 these vertebrae carry short ribs. 

 The vertebrae are very deeply 

 biconcave. Of the pectoral girdle, 

 the only element known is the 

 middle thoracic plate. The lateral 

 thoracic plate or coracoid has a 

 stalk-like process. The anterior 

 extremities are strong, with the 

 humerus nearly twice as long as 

 the fore-arm, and the phalanges are 

 short and slender ; and the hind 

 limb is similarly characterized. 



The third species Limnerpeton 

 macrolepis (Fr.), is characterized 

 by quadrate scutes, one and a half 

 times as wide as high, marked 

 with longitudinal strife, and hav- 

 ing the hinder edge thickened. 

 There are about twelve teeth in the premaxillary bone, distinguished 

 by having their points furrowed. There are about forty blunt- 

 pointed teeth in the maxillary bone. There are more than forty 

 teeth in the lower jaw. The form of the vomer is complicated. 

 The middle thoracic plate is marked with radial striping. Tlie 

 vertebrae were slightly ossified and constructed on the amphiccBlous 



Fig. IV. — Restoeation of Limnerpeton 

 laticeps (Fritsch) ; natural size. 



