ADDENDA. 



VOL. I. 



Fam. PRISTID.^. 



1. PRISTIS, Latr. 



1. PRISTIS PERROTETI, M. & H. 

 Arid :— 



4. Hot. Grba E. at Bafata, Portng. Guinea. Dr. W. J. Ansorge {().). 



Fam. POLYPTEEID^. 



1. POLYPTERUS, Gooffr. 



1. POLYPTERUS BICHTR, Geoffr. 

 Pellcgr. Poiss. Bass. Tchad, p. 16, fig. (1914). 



Add:— 



2. POLYPTERUS LAPRADII, Stdr. 



29-30. Ad. Geba R. at Bafata, Portug. Guinea. Dr. W. J. Ansorge (C). 

 31. Yg. Anambra R., Lower Niger. W. J. Crocombe, Esq. (P.). 



2 a. POLYPTERUS ANSORGII. 

 Bouleng. Ann. & Mag. N. H. (8) vi. 1910, p. 424. 



Body as deep as broad in front. Head nearly twice as long as broad, 

 4 to 4j times in total length, much flattened, with supero-lateral eyes 

 and flat interorbital region; jaws equal in front; length of snout 5 to 5 J 

 times in length of head ; eye 8 times in length of head, 1^ to IJ times 

 in interocular width ; latter less than distance between eye and spiracle ; 

 no azygous shield betvt'een the nasals ; a series of 3 or 4 shields between 



