PAKAPHAr.O.—MEsOBOHUS. x 245 



longest ray half len<j;th of liead. Anal 111 10-11. Pectoral shorter 

 than ventral, hardly | length of head. Caudal forked, with obtusely 

 pointed lobes. Caudal peduncle nearly 3 times as long as deep. Scales 

 87-90 -JO-, 9 between lateral line and root of ventral. Olive above, 

 whitish beneath ; a median and two lateral series of black spots, the 

 lower forming vertical bars across the lateral line; three more or less 

 regular black streaks across the dorjsal ; a black spot on the adipose fin ; 

 a black streak on the middle rays, and three oblique ones on each lube 

 of the caudal. 



Total length 130 millim. 



Upper Congo (Lake L('op(;ld 11.). — 'I'^pes in C(;ngo Museum, 

 'IVi viiercn. 

 1. One of die types. Kutu, L. Leuixjlci U. M. P. D-llie/ {C ). 



9. MESOBORUS. 

 Pellegr. Bull. Mus. Fnv'ir^, 1900, \k 178 ; Bouleiig. Puiss. Bass. Congo, p. 175 (1901). 



Snout elongate, pointed; mouth large; upper jaw movable upwards; 

 maxillary very small, hidden under the pra^orbitai when the mouth is 

 closed ; prsemaxillary and dentary with two series of teeth, the outer 

 strong, compressed, pointed, the point directed backwards, with or 

 without a secondary cusp, the anterior large, canine-like ; teeth of inner 

 series very small. Greater part of cheek covered by the suborbitals ; 

 nostrils near the eye, close together, separated by a valvular fla]3 ; gill- 

 membranes narrowly united to isthmus. Body elongate, compressed. 

 Scales small, strongly ciliated ; lateral line straight, along the middle of 

 the side ; a small scaly process at base of ventral. Dorsal with 18 rays, 

 above the ventrals ; anal with 14 rays; adipose dorsal tin small. 



Conoco. 



]. MESOBORUS CROCODILUS. 

 Polk'^r. 1. c. : Bouleiin;. 1. c. 



Depth of body 4 times in total length, length of head 3 times. Head 

 3 times as long as broa-l ; snout twice as long as eye, which is 4^ times 

 in length of head and exceeds intcrorbital width ; mouth extending to 

 below anterior border of eye ; 2'J or 30 small teeth on each side and a 

 pair of canines in front of each jaw, the canines of the lower jaw 

 separated by a pair of small teeth ; naked part of cheek half width of 

 suborbital. Gill-rakers short, 17 on lower part of anterior arch. 



