PARIASAURIDiE. 119 



This form of humerus — especially in the position of the entepi- 

 condylar foramen — approximates more closely to a mammalian type 

 than is the case in the Theriodontia. Propappus was at first regarded 

 as allied to Stereorhachis (fig. 23), both forms being referred to a 

 separate group under the name of Gennetotheria \ The under- 

 mentioned innominate presents characters approximating both to a 

 Labyrinthodont and to a Mammalian type. 



Propappus omocratus, Seeley 2 . 



The type species. Of smaller dimensions than Pariasaurus 

 bombidens. 



Hab. South Africa. 



36250. The somewhat imperfect right humerus ; from the Karoo 

 system of the Brak river, near Fort Beaufort. The type ; 

 noticed by Seeley in the 'Proc. Roy. Soc' vol. xliv. p. 142. 

 This specimen has a length of 0,320 (19*7 inches). The 

 delto-peetoral crest and the opposite border are imperfect, 

 and the distal condyle has been somewhat flattened. 



Presented by A. G. Bain, Esq., 1853. 



R. 848. The proximal portion of the left femur of this or a closely 

 allied form ; from the Karoo system of YinderaarsPontein, 

 near Beaufort AVest, on the southern flank of the JSTieuw- 

 veldt range. This specimen agrees so well in relative size 

 and structure with the humerus as to leave little doubt that 

 it indicates an allied or identical form. It differs from the 

 femur of the Dicynodontia in the absence of the long outer 

 trochanter, and approximates to a monotrematous type. 



Purchased from T. Bain, Esq., 1880. 



36246. A left innominate, probably referable to this form ; from the 

 (Fig.) Karoo system on the road to Block Drift, near Port Beau- 

 fort, The mineral condition of this specimen is identical 

 with that of No. 362-50, so that it might well have belonged 

 to the same individual. Pigured by Owen in the ' Trans. 

 Geol. Soc/ ser. 2, vol. vii.pl. xxxiv. fig. 1, and also in his 



, x When the term Gennetotheria was first proposed it was used in an ordinal 

 sense, although subsequently regarded as a suborder of the Anomodontia (Proc. 

 Boy. Soc. vol. xliv. p. 383). Still later (Phil. Trans, for 1889, p. 292) Lyco- 

 saurus is given as the typical representative of the Gennetotheria, although no 

 mention of* that genus was made when the group was proposed. 

 | 2 Proc. Koy. Soc. vol. xliv. p. 142(1888). 



