PETEESIUS.— EUGNATHICHTHTS. 241 



ventral. Candal peduncle a little longer than deep. Scales 24-27 ||, 1| 

 or 2 between lateral line and root of ventral; lateral line sometimes 

 ending on caudal peduncle before reaching caudal fin. Silvery, with a 

 more or less distinct darker lateral band ; dorsal grey to blackish with 

 a broad yellow transverse bar ; caudal edged with grey. 



Total length 65 millim. 



Gold Coast. 



1-5. Types. Kotchwah River. R. B. N. Walker, Esq. (P.). 



G-15. Ad. & hgr. Akropon. R. B. N. Walker, Esq. (C.) ; 



Dr. A. Gunther (P.). 

 16-25. Ad. & hgr. Infoan. R. B. N. Walker, Esq. (C.) ; 



Dr. A. Gunther (P.). 



7. EUGNATHICHTHTS. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 25 (1898), and Poiss. Bass. Congo, p. 170 

 (1901). 



Snout moderately elongate, rounded; mouth large; jaws massive, 

 upper movable upwards ; maxillary very small, hidden under the 

 prseorbital when the mouth is closed ; prsemaxillary and dentary with 

 two series of teeth, the outer large, subequal, compressed, bicuspid, the 

 inner very small, compressed, obtuse, the two series separated by a con- 

 siderable space. Cheek partly naked ; nostrils near the eye, close 

 together, separated by a valvular flap ; gill-membranes free from isthmus. 

 Body elongate, compressed. Scales small, strongly ciliated ; lateral line 

 straight, along the middle of the side; a scaly process at base of ventral. 

 Dorsal fin with 11 to 18 rays, above the ventral s ; anal with 12 or 13 

 rays; adipose dorsal fin small. Vertebrae 55 (33 + 22). 



Congo. 



Two species : — 



D. 17-18 ; Sc. 95-107 }|^ I. E. eetveldii, Blgr., p. 24] . 



D. 11-14 ; Sc. 68-71 ^ 2. K macroterolepis, Blgr., p. 243. 



1. EUGNATHICHTHYS EETVELDII. 



Bouleng. Ann. Mus. Congo, Zool. i. p. 2?>, pi. xii. (1898), and Poiss. Bass. Congo, 

 p. 170 (1901). 



Depth of body 4 to 5 times in total length, length of head 3|- to 

 4^ times. Head 2 to 2^ times as long as broad, lA to If times as long 



YOL. I. R 



