EXPLANATION OF THE PLATES. 



PLATE XX. 



Alestes macrolepidottis, C. & V., p. 127. f nat. size. Upper specimen from 

 Gondokoro, lower from Rosaires. 



PLATE XXI. 



Eig. 1. Ichthyoborus besse, Joann., p. 134. Eashoda. Nat. size. a. Upper view of 



head, nat. size; h. Open mouth, X 2. 

 Eig. 2. Ichthyoborus besse, Joann. Mouth of Lake No. Nat. size. 

 Eig. 3. Nanncethiops unitmniatus, Gthr., p. 137. Gaboon. (Type.) Nat. size. 

 Eig. 4. Nannocharax niloticits, Joann., p. 150. Kaka, White Nile. X 2. 



PLATE XXII. 



Distichodus niloticus, L., p. 141. Adult, Beni Souef, with upper view of head, 

 -f nat. size, and young, Eashoda, nat. size. 



PLATE XXIII. 



Eiff. 1. Distichodus niloticus, L., p. 141. Skeleton, Nile. Nat. size. 1 a. Upper 



view of skull. 

 Eig. 2. Distichodus rostratus, Gthr., p. 143. Lower Nile. (Type.) f nat. size. 



2 a. Upper view of head. 



PLATE XXIV. 



Eig. 1. Distichodus brevipinnis, Gthr., p. 146. Eashoda. Nat. size. 1 a. Upper 



view of head. 

 Fig. 2. Distichodus engycephalus, Gthr., p. 148. Khartum. (Type.) Nat. size. 



2 a. Upper view of head. X 1|. 



PLATE XXV. 



Citharinus citharus, GeofFr., p. 153. Biba. \ nat. size. 



PLATE XXVL 

 Citharinus latus, M. & T., p, 156. Gondokoro. f nat. size. 



