]'26 CATALOGUE OF FISH. 



either before or beneath the eye, which has uo lid. Nostril small, 

 like a pore. Four rajs ia the brauchiostegal membrane. 



1. StERNARCHUS ALBIFRONS. 



Sternarchus albifrons, Bl. et Schn. 407, t. 94. 



Gymnarchus albifrons. Pall. Spic. Zool. vii. 36, t. vi. 1 ; Oastelneau 

 Amer. dii sud. Zool. t. 45, f. 1. 



A blunt head, and the gape of the mouth extending to beneatli 

 the eyes. The finless part of the tail not equal in length to the 

 head. A mesial milk-white stripe runs along the top of the head 

 and buck, and two broad dark bars cross the body. According to 

 authors, the numbers of the hn-rays are P. 10 ; A. 147 ; C. 20. 



Surinam. British Museum. 



See also, 



1, Sternarchus Lacepede, Castelneau Amer. ihi sud. t. 4.5, f. 3. 



2, Sternarchus Maxirailiaui, Castelneau Amer. du sud. t. 45, f. 4 ; 

 both with small mouths. 



2. Sternarchus Brastlieksis. 



Sternarchus Brasiliensis, Reinhardt, Wie(/m. Arch. 1854, p. 182. 



Of an uniform dark chocolate-brown colour. Its head is said to 

 be pointed. P. 18 ; A. 177 to 185 ; C. 19 or 20 Rays. 



Inhabits the Rio das Velhas. 



Since the three species albifrons, Bonapartii, and oxyrhinchns, 

 are essentially separated from each other by the form of the head, 

 it may be that BrasiUensis is but a variety of albifrons. It is pro- 

 bably on this account that Pi'ofessor Reinhardt compares the species 

 merely with the figure of albifrons. 



3. Sternarchus Bonapartii. 



Sternarchus Bonapartii, Castelneau Amer. du sud. Zool. t. 40, f. 2. 



Fie. 1 . 



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