MOODIE: PERMIAN ANPHIBIA. 241 



Platypodosaurus ricardi Twelvetrees, 1880. Permian of Russia. 

 " stiickenbergi Trautschold. Zechstein of Russia. 



Cochleosaurus bohemicus Frit=ch, 1876. Permian of Bohemia. 

 Gaudrya latistoma Fritsch, 1885. Permian of Bohemia. 

 Chelyosaurus vranyi Fritsch, 1878. Permian of Bohemia. 

 *Sphenosaurus sternbergi Fitzinger, 1840. Permian of Bohemia. 

 Sparagmites lacertinus Fritsch, 1885. Permian of Bohemia. 

 *Sclerocephalus hauseri Goldfuss. Permian of Germany. 

 *Sclerocephalus credneri Fritsch. Permian of Bohemia. 

 *S'clerosaurus bavaricus Branco. Rothl. Ohmbach. 

 ♦Melosaurus uralensis H. von Meyer. Kupfersandstein. 

 *Osteophorus roemeri H. von Meyer. Rothl. Schliessen. 

 *Zygosaurus lucius Eichwald. Permian of Russia. 



Gonioglyptus huxleyi Lydekker from the Gondwana beds of 

 India also possibly belongs in this family. 



So many genera and species of extinct Amphibia are based 

 on fragments of crania or limbs that an exact diagnosis of the 

 forms is impossible. The species marked with a star (*) are 

 uncertain as to position. Many of the species listed under the 

 Trimerorhachidse are placed in this family on the authority of 

 Lydekker, who included them in his family Archegosauridse, 

 which was preoccupied by Trimerorhachidse. Doctor Williston 

 regards Trematops milleri Will, and Acheloma cumminsi Cope 

 as representatives of a family distinct from the Eryopidse for 

 which in 1910 he proposed the name Trematopsidse. He also 

 regards the species of Zatrachys as entitled to family rank in 

 the Zatrachydidse, Williston, 1910. 



Euchirosaurus of Gaudry is probably a reptile. 



Suborder — Embolomeri, Cope, 1881. 

 Family — Cricotid;e Cope, 1884. 



Cricotus gibsoni Cope, 1877. Carboniferous of Illinois. 



" crassidiscus Cope, 1884. Permian of Texas. 



" heteroclitus Cope, 1875. Carboniferous of Illinois. 



" hypantricus Cope, 1884. Permian of Texas. 



" sp. indet. Case. Carboniferous of Illinois. 

 Diplospondylus punctatum Fritsch. Permian of Bohemia. 

 Spondylerpeton spinatum Moodie, 1910. Carboniferous of Illinois. 

 ? *Discosaurus permianus Credner. Permian of Saxony. 



Family — Dissorophid^e Williston, 1910. 



Dissorophus multicinctus Cope, 1895. Permian of Texas. 



" mimeticus Cope, 1896. Permian of Texas. 



" testudineus Cope, 1896. Permian of Texas. 



Cacops aspidephorus Will. 1910. Permian of Texas. 

 Aspidosaurus chiton Broili, 1904. Permian of Texas. 



From the foregoing diagnosis is will be seen that about 55 

 species of the 350 which have been assigned to the fossil 

 Amphibia of the world can be located in the order Temno- 



