No. 582] RECENT STUDIES ON FOSSIL AMPHIBIA 



Just what the basis of this relationship is he does not 

 state. The reviewer 5 has previously stated that these 

 above-mentioned microsaurian genera exhibit no struc- 

 tural features which would ally them, except remotely, 

 with Diplocaulus. This Permian genus has no relatives 

 among the Coal Measures Microsauria, the reasons for 

 this statement being given in the above-mentioned essay 5 

 and need not be repeated here. The material on which 

 von Huene bases his paper was collected in Baylor County, 

 Texas, and formed a part of a collection purchased by 

 Doctor von Huene from Charles Sternberg at Lawrence, 

 Kansas. The same writer (9) has again studied the Per- 

 mian Lysorophus, which is regarded by Williston as 

 closely akin to the salamanders. 6 Huene bases his dis- 

 cussion on twenty-four skulls in the collection of the Uni- 

 versity of Tubingen. He describes and figures some mi- 

 nute limb bones, thus partially confirming Miss Finney's 

 results. 7 He agrees with Williston that Lysorophus is 

 related to the Urodeles though suggesting : ^ 



Mit den Temnospondylia hat der permisehe Urodele Lysorophus-- 

 lmeh "Tussore Ahnliehkeit als die jetzijreu rrodelon. Sie liegen in der 

 Sehiidelbasis und der -rosseren Anzald der hinteren Sehiideldeckknochen. 



The same author (10) gives the results of his studies of 

 Permian vertebrates at the American Museum. The 

 paper is illustrated by sketches of various skulls and parts 

 of skulls made by the author and showing his interpreta- 

 tion of the elements composing the cranium of American 

 Permian amphibians and reptiles. He describes and fig- 

 ures a stapes in a skull of Eryops and gives the results 

 of his study of the brain-case of this genus. The stapes 

 has a length of 4 cm. and in shape is not unlike a human 

 clavicle. His studies of Lysorophus, Gymnarthrus, Di- 

 plocaulus and other genera confirm the results of pre- 

 vious students of these forms. He concludes his paper 

 with a discussion of morphological results, and appends 

 a bibliography of twenty papers. 



