MOEMTEOPS. 31 



the pectorals and from the anal, or nearer the former. Anal fin longer 

 than the dorsal. Vertebra 56-62 (21-24 + 31-39). 

 Nile and Tropical Africa. 



Synopsis of the Species. 



I. Caudal peduncle 2 to 2i times as long as deep, \ to | length of head. 



A. 20-36 teeth in each jaw ; lat. 1. 85-96. 

 D. 21-27; A. 40-51; 14-18 scales round caudal 



peduncle ; depth of body 5-6i times in 



total length ; head nearly twice as long 



as deep 1.1/". deliciosus, Leach, p. 32. 



D. 25-28 ; 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. M. anguilloides, L., p. 34. 



D. 26-29 ; A. 39-45 ; 14 scales round caudal 



peduncle ; depth of body 6^-7 times in 



total length ; head more than twice as long 



as deep 3. M. longiceps, Gthr., p. 35. 



1). 26 ; A. 43 ; depth of body 7§ times in total 



length ; head nearly twice as long as deep . 4. M. breviceps, Stdr., p. 36. 



B. 10-16 teeth in each jaw. 



1. Snout short, not prolonged into a tube. 



«. D. 19-22 ; A. 33-37 ; head nearly twice as long as deep ; depth of 

 body 6i-7ijr times in total length. 

 L. 1. 80-93 ; 16 scales round caudal peduncle . 5. M. engystoma, Blgr., p. 36. 

 L. 1. 70-76 ; 12 scales round caudal peduncle . 6. M. parvus, Blgr., p. 37. 



b. D. 29-32 ; A. 40-47 ; L. 1. 90-95 ; 16-18 scales round caudal 

 peduncle ; head not twice as long as deep. 

 Depth of bod) r 6 times in total length ; 7th or 

 8th ray of anal corresponding to first of 



dorsal 7. M. masuianus, Blgr., p. 38. 



Depth of body 6^-8 times in total length ; loth 

 or 14th ray of anal corresponding to first 

 of dorsal 8. M. sirenoides, B!gr., p. 39. 



2. Snout much produced., tubiform, straight or slightly curved ; A. 34-39. 

 D. 19-21 ; L. 1. 70-74 ; 10-12 scales round 



caudal peduncle ; head 2^-2f times as long 



as deep 9. M. zanclirostris, Gthr., p. 40. 



D. 17 ; L. 1. 63-70 ; 8 scales round caudal 

 peduncle ; head 3-3j times as long as 

 deep ... 10. 1/. boulengeri, Pellegr., p. 40. 



