62 MOEMTRID^. 



D. 19 ; A. 24-26 ; 1. 1. 67-72 ; caudal peduncle 

 2^-3 times as long as deep ; eye a little shorter 

 than snout 12. M. ansorgii, BIgr., p. 73. 



h. Depth of body 2|-3f times in total length. 

 D. 18 ; A. 23 ; 1. 1. 70 ; caudal peduncle not twice [p. 74. 



as long as deep 13. il/. pauciradiatus, Stdr., 



D. 15-18 ; A. 24-25 ; 1. 1. 46-53 ; caudal peduncle 



2^-2| times as long as deep, f-| length of 



head 14. M. nir/ricmis, Blgr., p. 75. 



D. 18-22 ; A. 22-26 ; 1. 1. 53-60; caudal peduncle 



2^-3 times as long as deep, f length of head . 15. M. isidori, C. & V., p. 75. 



II. Dorsal and anal originating in the same vertical ; D. 30-32 ; A. 30-35 ; 



1. 1. 80-93. [p. 77. 



16 scales round caudal peduncle 16. ^1/. castor, Pappenh., 



12 scales round caudal peduncle 17. M. harniujtoni, Blgr., 



III. Dorsal originating in advance of anal. LP- ' 8- 



7-9 



A. Teeth g^ ; depth of body 3-3| times in total length ; caudal peduncle 



3^-4 times as long as deep, 16 scales round it. 

 D. 29 ; A. 28 ; 1. 1. 60 ; dorsal originating slightly 



in advance of anal 18. M. tumifrons, Blgr., p. 79. 



D. 31-35 ; A. 27-30 ; 1. 1. 55-70 ; anal originating [p. 80. 



below 10th to 12th ray of dorsal 19. 31. plagiostoma, Blgr., 



3-7 



B. Teeth g^ ; depth of body 2^-3| times in total length ; caudal peduncle 



2-3 times as long as deep, 12-14 scales round it. 



1. Interorbital width about ^ length of head ; snout projecting bej'ond 



mouth ; D. 30-36 ; A. 23-27. 

 L. 1. 65-70 ; eye as long as or a little shorter than 



snout ; base of dorsal 1:^-1^ times its distance 



from head 20. il/. dkcorhijnchus, Peters, 



L. 1. 55-65 ; eye as long as or slightly longer than [p. 81. 



snout ; dorsal as long as or slightly shorter 



than its distance from head 21. il/. prf/i(?nci, Blgr., p. 82. 



L. 1. 67 ; eye much longer than snout ; base of 



dorsal nearly as long as its distance from head. 22. M. hudgetti, Blgr., p. 83. 



2. Interorbital width about \ length of head ; D. 33-41 ; A. 23-27; 



1. 1. 58-69. 

 Eye much longer than snout ; width of mouth ^ 



length of head 2'6. M. macrops, Blgr., p. 84. 



Eye not or but slightly longer than snout ; width of 



mouth 1-1 length of head 24. J/, pi^ktacus, Blgr., p. 85. 



Eye shorter than snout ; width of mouth \~\ length 



of head 25. .V. uilrertJd, Blgr., p. 86. 



