MARCUSENIUS. — STOMATOKiriNUS. 87 



Caudal peduncle 3 times as long as deep, J length of head. G1-G8 

 scales in lateral line, {^,pr^ in transverse series on body, j^^ in transverse 

 series between dorsal and anal, 3 2 round caudal peduncle. Yellowish. 



Total length 260 millim. 



Congo. — Tvpcs in Congo Museum, Tervueren. 



1. Ad., Olio of the (y[)es. Matudi, Lower Congo. ('apt. Wilvtrlh ((,'.). 



2. Ad., „ U[)oto, Up[)cr Congo. ,, 



3. llgr. Upper Congo. 13ru.sselri University. 



5. ST0MAT0RHINU3. 



Boulcng. Ann. Mn<. Congo, Zool. i. p. D (1^1*^5), Troc. Zool. Soc. 18l>8, p. 709, 

 and roi.s.<. 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. 

 Vertcbree 39 (14+25). 



Trop)ical Africa. 



Si/nopsis of tlie Species. 



I. Caudal peduncle 3}, times as long as deep, ;^ to -^ length of head. 

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



depth of body 3-3^ times in total length . 1. S. pundiridatus, Blgr., p. S8. 



II. Caudal peduncle 2^ tunes as long as deep, I to 5 lenj^th of head. 

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



depth of body 3^-3fj times iu total length . 2. S. icalkeri, Gthr., p. 88. 

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

 peduncle ; de[ith of hody 4^-5 times in 

 total length 'd. S. himilior, Blgr., p. ^'^. 



IT I. Caudal peduncle twice as long as deep, ^ length of head. 

 L. 1. 48 ; 12 scales round caudal peduncle ; 



depth of hody 3^ times in total length. . 4. S, corned, Blgr., p. 90. 



L. 1. 54-r)0 ; 20-22 scales round caudal 

 jieduncle ; dejith of body 3n-4'. times in 

 total length 5. 6'. />o/^/<7>i5, Blgr., p. 91. 



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

 peduncle ; depth of body 4-4^ times in 

 total length 6. -S. ynicro^^s, Blgr., p. ^2. 



