1898.] OF THE FAMILY MOEMTBID.t. 813 



II. Snout at least | length of head. 



A. Dorsal originating above or in advance of base 



of ventral. 



1. Caudal peduncle 1| to 2^ times as long as 



deep, at least nearly i length of head. 



a. Dorsal 80-87 ; anal 17-20. 



o. Pectoral pointed, more than \ length 



of head. 



Length of head not greater than depth of body ; 



upper profile ot head a continuous descending 



straight line or feeble curve ; 26-30 scales round 



caudal peduncle, which is twice as long as deep 



and i length of head (J. easf^ifc Hasselq. 



Length of head greater than depth of body ; snout 



vrith slightly concave upper profile 7- nilotictis Bl. Schn, 



Length of head not greater than depth of body, 



upper pi-ofile a continuous descending curve ; 



caudal peduncle more than twice as long as deep. 8. Juhelini 0. & V. 



^. Pectoral rounded, i length of head ; 



upper profile of head descending in a 



straigbtline ^.rumeC.&V. 



b. Dorsal 58-78. 



D. 71-78, 5-5, times as long as anal ; A. 18-20 ; 

 pectoral pointed, f-f length of head ; 22-26 scales 

 round caudal peduncle 10. longirostrU Ptrs. 



D. 58-66, A-4\ times as long as anal ; A. 18-21 ; 

 pectoral pointed, j-f length of head ; 26-28 scales 

 round caudal peduncle 11. kanniimc Forslc. 



D. 62, 3 times as long as anal ; A. 23 ; pectoral 

 rounded, hardly 5 length of head ; 12 scales round 

 caudal peduncle 12. cahaUus Blgr. 



2. Caudal peduncle 1^ as long as deep, ^ length 



of head ; D. 75, nearly 5 times as long as 

 anal ; A. 19 ; pectoral pointed, nearly ^ 

 length of head ; 18 scales round caudal 

 peduncle 13. proboscirudrl., Blgr. 



B. Dorsal 60, originating further back than 



ventral; anal 20 14. fcniiirjitris Ftrs. 



1, MoEilTBUS HASSELQXJISTI. 



Mormyrusherse (non Sonnini),Lacep.Hist. Poiss.v.p. 620 (1803). 



Monm/rus cascJiive (non Hasselq.), Geoffr. Descr. Egypte, Poiss. 

 p. 273, pi. vi. fig. 2 (1829). 



Mormi/nis hcisselquistii, Cuv. & Val. xix. p. 253 (1846) ; Mar- 

 cusen, Mem. Ac. St. Petersb. (7) vii. 1864, no. 4, p. 130. 



Depth of body nearly equal to length of head, 4 times in total 

 length. Head 1| as long as deep, with curved upper profile ; snout 

 I as long as postorbital part of head, projecting a little beyond 

 the mouth ; teeth small, notched ; eye moderate, its diameter 2i 

 in length of snout. Dorsal 70, originating in advance of ventral, 

 twice as far from base of caudal as from end of snout, 5| times as 

 long as anal. Anal 18, originating nearer base of caudal than 

 base of pectoral. Pectoral rounded, § length of head, ventral 5. 



