186 Oeological Societf/. 



and described us new the following species — -"Sigantus excentricus, 

 Camrlhtria epistomifera, Mior.v contiirecius, TurbhieUus adlficatu*, 

 Cypnea Gabbiana, and Fhorus dehrtiis. 



May 24, 187(i.— Prof. P. Martin Duncan, M.B., F.R.S., President, 

 in the Chair. 



" Evidences of Thcriodonts in Permian Deposits elsewhere than 

 in South Africa." By Prof. R. Owen, C.B., F.R.S., F.G.S. 



In this paper the author noticed some described Reptilia which 

 he believes to belong to his order Theriodontia. In 1838 Kutorga 

 described as probably mammalian the distal end of a humerus 

 showing a perforation or canal above the inner condyle. The spe- 

 cimen was from the Permian of the Western Oural ; and Kutorga 

 gave it the name of Britliojyus 2i''^sais. Under the name of Orthopus 

 primcevus he described the proximal part of the humerus of the 

 same species, perhaps of the same bone. There is thus endence of 

 an extinct reptile in the Permian deposits of the Oural with a hu- 

 merus sho^ving the characters of the Theriodont Reptiles of the 

 Karoo series of South Africa. The British Museum possesses a cast 

 of the first-mentioned fragment, labelled by Krantz " Eurosaurns 

 uralensis, H. von Meyer, Brithopus priifcus, Kutorga." The genus 

 Eitrosaums was founded in 1842, by Fischer von Waldheim, upon 

 some fragments of bone, including a humerus with a broad proximal 

 end as in Kutorga's Orthopus ; and Fischer also noticed a humerus 

 showing chai'acters like those of Kutorga's Brithopus, from the same 

 locality as the portion of a jaw described under the name of Rho- 

 palodon Wangenheimu, Fischer, which contained nine molar teeth, 

 with thick, pointed, subcompressed crowns, with trenchant and 

 seiTate borders. In 1858 H. von Meyer described a skull from the 

 Permian of the Oural, under the name of Mecosau)-ns vralic'nsis, as 

 a Labyrinthodont ; and Eichwald referred this genus, with Kutorga's 

 Brithopus and Orthopnis, to Fischer's Eurosaurus. The author re- 

 garded Mecosaunis as truly Labyrinthodont ; whilst the Permian 

 forms constituting Kutorga's genus were referred to the Theriodont 

 order. From the same locality as the above, Kutorga describes Syodon 

 biarmieicm as probably a Pachyderm. Its teeth resemble those of 

 Cynodraco. Eichwald's Deuterosaurus biarmicus is founded upon 

 the fore part of both upper and lower jaws of a Reptile, containing 

 teeth with denticulate or crenulate trenchant borders, the canines 

 being large, especially in the upper jaw. Deuterosaurus closely 

 resembles Cynodraco, and still more the Lycosaurus of the Karoo 

 beds of the Sneewberg range. All the above are from the Permian 

 beds of the Oural ; and the author regards them as furnishing sug- 

 gestive evidence of the Palaeozoic age of the Karoo series, in which 

 the Theriodont Reptiles are best represented. 



The author further noticed a Theriodont allied to Lycosaurus, from 

 a red sandstone, probably of Permian age, in Prince-Edward 

 Jpland. The remains include thp left maxillary, premaxillary, and 



