1G4 Prof. H. G, Seeley on the 



Transvaal in 1890-91. For many of these identifications I 

 was indebted to Mr. E. Meyrick, and they are used on his 

 authoiity.— VV. L. DISTANT. 



Cra7nbus contaminelbifi, Iliibn. Pretoria. 

 Eromene ocellea, Haw. Pretoria. 

 Nephopteryx apofomdln, Meyr. Pretoria. 

 Myelois Bohemani, Zell. Pretoria. 

 JEtiella zinckenella, Tr. „ 



Mama Hamjjsoni, Dist. Barberton. 

 PyraUsi farinalis, Linu. Pretoria. 



iUidalis, Zell. Pretoria. 



Dichocrosis cnnyntaJis, "Wall. Pretoria. 



Lyyrojnci quaternalia, Zell. ,, 



Eiidasta Warreni, Dist. Pret )ria, Johannesburg'. 



Acharana otreusalis, Walk. Pretoria. 



Pionea africalis, Guen. „ 



Pyrausta infuscnlis^ Zell. ,. 



Titmiio fiorilegaria, Guen. Pretoria. 



Essina atribasaUs, Rag. ,, 





XXVII. — On the SJcuU of Mochlorhinus plafcyceps, from 

 BethuUe, Orange Free State, preserved in the Alhany 

 Museum, Grahamstoion. By H. G. Seeley, F.R.S., 

 Professor of Geology, King's College, London. 



Sir R. Owen, in 1859, discriminated from Dicynodon some 

 fossil reptiles, which were named Ftychognathus. That 

 genus was defined by the sharp angular transverse ridge, in 

 which the more or less flattened top of the head meets the 

 strongly ridged long straight face. This character was made 

 more manifest in 1,870, In the same author's ' Illustrated 

 Catalogue of South African Reptllia,' by references to the 

 jdates In which those characters are drawn. The transverse 

 fold or ridge has been shown In every species of the genus 

 which has been figured. The name represents an important 

 generalization and has been generally used. 



Count Marschall rccAded, in 1873, tliat the name had 

 been applied to two dlflbrent genera, and the references were 

 brought under my own notice by the late Mr. G. R. Crotch 

 about 1869. Subsequently, with the aid of Professor F. 

 Jeffrey Bell, I examined the references to Ftijchognathus, the 

 crustacean, which occur in the writings of Professor A. 

 Milne-Edwards and ]\Ir. Mlers, without finding that the genus 

 had become well known. Mr. R. Lydekker, F.R.S., in 1889, 

 urged that since Stimpson published the name in 1858, it was 

 not available for use by Owen in 1859. In some human 



