2 STMBEAXCHIDyE. 



1. SYMBRANCHUS AFER. 

 Bouleng. Ann. & Mag. N. H. (8) iv. 1909, p. 430. 



Snout rounded, about twice length of eye and a little exceeding 

 interorbital width ; distance between end of snout and gill-opening 

 1J times length of skull, 8 times length of snout, and contained 7f times 

 in distance from snout to vent ; length of tail about 3^ times in total 



Pis. 1. 



Synibranchus afer. 

 Type. 



length. Gill-opening rather wide. Tail ending in a rather obtuse 

 point. 126 vertebrae. Coloration uniform blackish, or anterior part of 

 body black and red. 



Total length 320 mm. 



Portuguese Guinea and Lower Niger *. 



1-2. Types. Tidal river at Port Mansoa, Portuguese Dr. W. J. Ansorge (C). 



Guinea, 

 o. fcKel. ,, ,, ,, ,, 



* Almost simultaneously with the publication of this species, Captain Yipan received a 

 specimen, stated to be from the mouths of the Niger, which at the time of writing was 

 still living in his fresh-water aquarium at Stibbington Hall. 



