EXPLANATION OF THE PLATES. 



PLATE XIII. 



Gymnarchus niloticus, Cuv., p. 74. Kawa, White Nile. Adult and skeleton. 



f nat. size. 



PLATE XIV. 



Eeterotis niloticus, Ehrenb., p. 84. Gubt-el-Megahid, White Nile. With upper and 

 lower views of head, f nat. size. 



PLATE XV. 



Fig. 1. Xenornystus nigri, Gthr., p. 80. Bahr-el-Gebel. Nat. size. (One of the 



types of X. nili.) 

 Fig. 2. Clupeafinta, Cuv., p. 89. Lower Nile. Nat. size. 

 Fig. 3. Cromeria nilctica, Blgr., p. 94. Fashocla. (Type.) X 2J. 



PLATE XVI. 



Fig. 1. Hydrocyon forskalii, Cuv., p. 100. Fergunt, Nubia. Nat. size. 

 Fig. 2. Hydrocyon brevis, Gthr., p. 107. Khartum. (Type.) Nat. size. 



PLATE XVII. 



Fig. 1. Hydrocyon for skalii, Cuv., p. 100. Abu Hor. -f nat. size. 

 Fig. 2. Hydrocyon lineatus, Blkr., p. 104. Mouth of Lake No. f nat. size. 

 From coloured sketches by Mr. Loat. 



PLATE XVIII. 



Fig. 1. Alestes dentex, L., p. 113. Nile near Cairo. Nat. size. 

 Fig. 2. Alestes baremose, Joann. : p. 117. Rosetta Nile. Nat. size. 



PLATE XIX. 



Fig. 1. Alestes nurse, Riipp., p. 122. 6 . Eosaires, Blue Nile. Nat. size. 

 Fig. 2. Alestes nurse, Riipp. $ . Gondokoro. Nat. size. 

 Fig. 3. Micralestes acutidens, Peters, p. 131. 6 . Lake No. Nat. size. 

 Fig. 4. Micralestes acutidens, Peters. 2 . Lake No. Nat. size. 



