NO. 2294. FISHES FROM WEST AFRICA— FOWLER. 261 



close, near snout edge, hind one with well-developed flap, about an 

 eye-diameter directly before eye. Fontanel on head narrow, reaches 

 occipital buckler. Bones of head, occipital buckler, and front of 

 doi-sal spine strongly rugose. Rakere about 4 + 8, lanceolate, little 

 shorter than filaments. Lateral line complete, distinctly arched at 

 first. Opercles moderately striate. Humeral process about long as 

 snout, with few striae. Doreal origin slightly behind pectoral center. 

 Adipose fin rounded, about long as snout. Caudal well forked, 

 lobes about equal. Anal inserted little nearer caudal base than 

 doi-sal origin, front rays little shorter than last. Pectoral reaches 

 seven-eighths to ventral, which inserted midway between caudal base 

 and hind nostril and long fin reaches fu-st fifth of anal. 



Color in alcohol brown above, whitish on belly and under surfaces. 

 Dorsal, pectoral, ventral, and anal with dusky on median terminal 

 portions. Maxillary barbel T)rownish, other barbels pale. Iris 

 brownish. One example, 267 mm. 



The above diffei-s from the Sierra Leone specimens in its much 

 longer barbels, dei^ressed doreal If to adipose fin and longer pectoral, 

 which reaches near ventral. 



TYLOSUKUS CHORAM (Forskil). 



Head (damaged), 3i; depth, 12^ in trunk, excluding head and cau- 

 dal fin; D. II, 20?; A. ii, 20; P. i, 13; scales about 385 to caudal base, 

 counted in median lateral row from gill-opening; 18 scales above 

 lateral line to dorsal origin, 5 below; about 310 predorsal scales; eye, 

 2 J in postocular; interorbital, 1|. 



Body moderately compressed. Caudal peduncle about wide as 

 least depth and keel slightly developed each side. Head convergent 

 below, broad above, width IJ in postocular region. Eye large, 

 ellipsoid. Jaws long, slender, not completely closing so base of upper 

 leaves a distinct open gape. Teeth of single row enlarged and erect 

 canines in each jaw, and surfaces all about externally with small 

 denticles or asperities. Tongue small, slender, end free. Maxillary 

 largely concealed, reaches firet third in eye. Nasal cavity large, 

 longest diameter equals pupil. Interorbital slightly depressed 

 medially. Cheek little wider than opercle. No rakers. Scales 

 small, narrowly imbricated, with basal and apical striae distinct, not 

 convergent or joined over median vertical axis. Head naked, except 

 22 rows of scales across cheek. Lateral line low, even over caudal 

 base. Dorsal inserted little behind anal origin, lobe about IJ in 

 postocular space, and hind rays at least twice depth of caudal pedun- 

 cle, though not longer than median rays. Anal lobe in front hke 

 dorsal, equals postocular, other rays lower than dorsal. Caudal 

 damaged, lower lobe evidently longer. Pectoral about equals post- 

 ocular, ventral 1^. 



