140 



CATALOGUE OF FISH. 



eighteen yellowish-brown bars either break off on the ground- 

 colour of the minutely scaly parts above the anal fin, or are con- 

 tinued in rows of spots only. In very old individuals the blackish 

 bars become mere rows of spots, as the authors of the Florm Ich- 

 thyoloyicdi have already remarked. In the Berlin Museum there 

 is a specimen which has lost nearly all its markings. The lai-gest 

 specimen measures 37-46 in. in total length. It is on this that 

 Professor Valenciennes has founded his incBquilahiatus. 



19. Caeapus albus. 



Gymnotus albus, Pallas, Specel. Zool. viii. 36 ; Gnielin, 1137, No. 7 ; 



Bl S Schn. 523. 

 Gymnotus cserulescens, Seha, 32, f. 2. 



Diagn. Snout elongated, tapering gradually to a point. Upper 

 teeth from 30 to 40 in number ; under ones from 50 to 60 ; all 

 pointed. 



Descr. A more elongated compressed form, and furnished with a 

 larger number of teeth than the preceding one, which possesses 

 only from 26 to 30 upper ones, and 36 or 38 under ones. 



The Parisian specimens have almost black heads, crowded with 

 darker dots ; and their blackish bodies, more especially the tail 

 part, show merely traces of cross bars. They were obtained from 

 the Brothers Scliomburgk, A specimen from Cayenne exhibits 

 black spots on the sides of the head. Of these specks, only one, 

 situated on the gill-plate, is represented in Seba's figure. This 

 figure errs, moreover, in the eyes being placed too far back. 



Total length 



Length of the head to the nape . 



,, „ gill-opening 



From the tip of the mandible to the anus 

 Diameter of the eye .... 

 From the tip of the upper lip to the eye 

 Distance between the eyes . 

 From the anus to the anal fin 

 Length of the pectoral fin . 



See CarapusSauguinoleutus, Castelneaxi Aine 



. 10-63 in. 



• 0-71 „ 



. 0-91 „ 



. 087 „ 



. 0-08 „ 



. 0-24 „ 



. 0-35 „ 



. 1-00 „ 



. 0-35 „ 



da Slid. Zool. t. 46, f. 1 . 



I 



