MAECUSENIUS. — STOMATORHINUS. 87 



Caudal peduncle 3 times as long as deep, | length of head. 61-68 

 scales in lateral line, g^i in transverse series on body, i|^ in transverse 

 series between dorsal and anal, 12 round caudal peduncle. Yellowish. 



Total length 260 millim. 



Congo. — Types in Congo Museum, Tervueren. 



1. Ad., one o£ the types. Matadi, Lower Congo. Capt. Wilverth (C), 



2. Ad., „ Upoto, Upi)er Congo. „ 



3. Hgr. Upper Congo. Brussels University. 



5. STOMATORHINUS. 



Bouleng. Ann. JFns. Congo, Zool. i. p. 9 (1898), Troc. Zool. Soc. 1898, p. 799, 

 and Poiss. Bass. Congo, p. 83 (1901). 



Teeth in the jaws bicuspid (7-10 upper, 8-10 lower); minute conical 

 teeth on the parasphenoid and on the tongue ; mouth inferior, in 

 advance of the eyes. Nostrils widely separated, superposed, the lower 

 (posterior) close to the mouth. Body short; ventral fins nearer the 

 pectorals than the anal. Dorsal and anal fins subequal in length. 

 Vertebrae 39 (14+25). 



Tropical Africa. 



Synopsis of the Species. 



I. Caudal peduncle 3^ times as long as deep, f to | length of head. 

 L. 1. 52-55 ; 16 scales round caudal peduncle ; 



depth o£ body 3-3^ times in total length . 1. S. jnmcticidatus, Blgr., p. 88. 



II. Caudal peduncle 2^ times as long as deep, § to f length of head. 

 L. 1. 50-53 ; 16 scales round caudal peduncle ; 



depth of body 3]-35 times in total length . 2. S. walkeri, Gthr., p. 88. 

 L. 1. 51-53; 14-16 scales round caudal 

 peduncle ; depth of body 4^-5 times in 

 total length 3. ^. iMinilior, B\g\\, p. 89. 



III. Caudal peduncle twice as long as deep, \ length of head. 

 L. I. 48 ; 12 scales round caudal peduncle ; 



depth of body 3^ times in total length . . 4. ;S. corneti, Blgr., p. 90. 



L. 1. 54-60 ; 20-22 scales round caudal 

 peduncle ; depth of body 3|-4i times in 

 total length 5. S. pohjlepis, Blgr., p. 91. 



L. 1. 48-53 ; 16-18 scales round caudal 

 peduncle ; depth of body 4-4^ times in 

 total length 6. -S. microps, Blgr., p. 92. 



