EXPLANATION OF THE PLATES. 565 



PLATE XIII. 



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

 f nat. size. 



PLATE XIV. 



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

 lower views of head, f nat. size. 



PLATE XV. 



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



types of X. nili.) 

 Fig. 2. Clupea fi?ita, Cuv., p. 89. Lower Nile. Nat. size. 

 Fig. 3. Cromeria nilotica, Blgr., p. 94. Fashoda. (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 forskalii, Cuv., p. 100. Abu Hor. •§■ 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. Eosetta Nile. Nat. size. 



PLATE XIX. 



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

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

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

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



