1898.] or THE FAMILY MOBMYBIDvE. 781 



mouth terminal or subinferior. Nostrils moderately far apart, 

 remote from the eye. Body more or less elongate ; ventrals 

 equally distant from pectorals and from anal, or nearer the former. 

 Anal longer than dorsal. Vertebrje 56-62 (22-24 + 34-39), 



Synopsis of the Species. 



I. Caudal peduncle 2 to 2-^ as long as deep, ^ to ^ 

 length of head. 



A. 20-36 teeth in each jaw ; head at least 



nearly twice as long as deep ; lat. 1. 85-96. 

 D. 21-27 ; A. 41-51 ; 16-18 scales round caudal 



peduncle; depth of body 5-6 times in total 



length; head nearly twice as long as deep 1. delieiosics Tue&oh, 



D. 26-28; A. 39-42; 20 scales round caudal 



peduncle ; depth of body 5-6^ times in total 



length ; head nearly twice as long as deep 2. anguilloidcs L. 



D. 26 ; A. 39 ; depth of body 7 times in total 



length; head more than twice as long as deep ... 3. longicejps Gthr. 

 D. 26 ; A. 43 ; depth of body 7f times in total 



length ; head nearly twice as long as deep 4. breviceps Stdr. 



B. 12-16 teeth in each jaw. 



1. Dorsal 19-21. 



Snout much produced, tubiform, straight ; head 2^ 



2| as long as deep. Anal 36-39 ; lat. 1. 70-74... 5. zanclirostris Gthr. 

 Snout short ; head twice as long as deep. Anal 



35-37 ; lat. 1. 80-93 6. engystoma Blgr. 



2. Dorsal 30 ; snout short ; head not twice 



as long as deep. 

 A. 40, originating a little in advance of dorsal, 



and slightly nearer head than base of caudal ... 7. iyiasuianus'S\%'c, 

 A. 47, originating considerably in advance of 



dorsal, and at nearly equal distance from end of 



snout and base of caudal 8. SM-e»oicfes Blgr. 



II. Caudal peduncle not longer than deep, \-\ 



length of head ; 12-16 teeth in each jaw. 

 D. 29 ; A. 48 ; lat. 1. 80 ; depth of body 6 times in 



total length 9. liiieolatus 'Blgv. 



D. 34-37 ; A. 50-69 ; lat. 1. 100-105 ; depth of 



body 65-6^ times in total length 10. mariw Schilth. 



D. 45 ; A. 70 ; lat. 1. 102 ; depth of body a little 



more than 6 times in total length 11. microstoma Blgr. 



D. 43 ; A. 63 ; lat. 1. 95; depth of body 8^ times in 



total length 12. atienuatics'Blgv. 



1. MOEMTBOPS DELICIOSITS. 



Oxyrhynchus cleliciosus, Leach, in Tuckey, Exped. E. Zaire, 

 p. 410 (1818). 



Mormyrus tucJceyi, Cuv. & Val. xix. p. 263 (1846). 



Mormyrus zamhanenje, Peters, Mon. Berl. Ac. 1852, p. 275 

 Guuth. Proc. Zool. See. 1896, p. 224. 



Mormyrops tuckeyi, Marcusen, Bull. Ac. St. Petersb. xii. 1854, 

 p. 14. 



Mormyrops deliciosus, Griinth. Cat. vi. p. 224 (1866) ; Steind. 

 Sitzb. Ak. Wien, Ixi. i. 1870, p. 555, pi. v. fig. 1 ; Perugia, Ann. 



