96 MORMYRID.E. 



2. D c 31-36 ; A. 29-34 ; caudal peduncle 3£ to 4 times as long as deep. 

 L. 1. 72-80 ; 12 scales round caudal peduncle. 23. G. greslwffi, Schilth., p. 117. 

 L. 1. 98 ; 16 scales round caudal peduncle . 24. G. abadii, Blgr., p. 118. 



II. Snout much longer than postorbital part of head, produced into a tube, with 

 a mental appendage or barbel ; anal originating in advance of dorsal. 



A. 10-12 scales round caudal peduncle ; L. 1. 70-80. 

 D. 26-30 ; A. 29-34 ; least depth of snout 



4-5 times in its length ; mental ap- 

 pendage about as long as eye .... 25. G. tamandua, Gthr., p. 118. 



D. 34 ; A. 35 ; least depth of snout 3 times 

 in its length ; mental appendage f length 

 of snout 26. G. minis, Blgr., p. 119. 



D. 31-35 ; A. 33-37 ; least depth of snout 3-4 

 times in its length; mental appendage 

 about as long as eye 27. G. elepJias, Blgr., p. 120. 



B. 16-18. scales round caudal peduncle ; D. 27-34; A. 29-37; L. 1. 75-90. 

 Snout strongly curved, its least depth 5-7 



times in its length ; caudal peduncle 



3-3^- times as long as deep .... 28. G. rhynchophorus, Blgr., p. 121. 

 Snout strongly curved, its least depth 8-10 



times in its length ; caudal peduncle 3 



times as long as deep ...... 29. G. ibis, Blgr., p. 122. 



Snout strongly curved, its least depth 12 



times in its length ; caudal peduncle 4 



times as long as deep 30. G. curvirostris, Blgr., p. 123. 



Snout feebly curved, its least depth 20 times 



in its length in the adult ; caudal 



peduncle 3 times as long as deep . . 31. G. numeiiius, Blgr., p. 124. 



1. GNATHONEMUS MOORII. 



Mormynis moorii, Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. 116. 



Mormyrus lepturus, Giinth. Proc. Zool. Soc. 1871, p. 670, pi. lxix. fig. B, and Ann. 



& Mag. N. H. (6) xvii. 1896, p. 280. 

 Mormyrus grandisquamis, Peters, Mon. Berl. Ac. 1876, p. 250, pi. — . fig. 3 ; 



Schilth. Tijdschr. Nederl. Dierk. Ver. (2) iii. 1891, p. 84. 

 Gnatlwnemus moorii, Bouleng. Proc. Zool. Soc. 1898, p. 803, and Poiss. Bass. 



Congo, p. 94 (1901) ; Pappenh. Mitth. Zool. Mus. Berl. iii. 1907, p. 354. 



Depth of body 3 to 3f times in total length, length of head 4 to 5 

 times. Head as long as deep or slightly longer than deep, with curved 

 upper profile; snout short, about \ length of head; a globular dermal 

 swelling on the chin ; teeth small, notched, 5 in upper jaw, 6 in lower; 

 eye moderate, f to -f length of snout, about \ interorbital width. 



