AULOPYGE HUGELII. 125 



which characterises species of the genus Chondrostoma , and the form and 

 striping of the scales are such as occur in that genus. Dr. Giinther remarks 

 on the interest of this observation should it be confirmed, since a like combi- 

 nation of character is found in Cyprinoid genera of: Western Asia, which are 

 certainly not hybrids. 



The fish is sometimes seen in the fish markets of Madrid. 



Steindachner also records hybrids between Barbus comiza and Chondrostoma 

 willkommii from the Guadiana, at Mertola. In these examples the snout is 

 shorter, the mouth rounder, and less inclined downward than in B. comiza. It 

 resembles that species in shape of body, in curve of the neck, height of the 

 dorsal, and robustness of the four saw-like bony rays, and the barbels. In 

 the scales and sheathing of the jaws it resembles Chondrostoma willkommii. 



Another hybrid appears to be formed by Barbus graellsii and Chondrostoma 

 miegii. 



Spanish specimens, which have a long, small form of head, a feeble 

 denticulation of a more slender bony ray in the dorsal, strongly-developed lips 

 and barbels, and projecting snout, are thought by Steindachner to indicate a 

 bastard between Barbus comiza and Barbus bocagei. 



GrENUS: AulOpygG (HECKEL). 



This remarkable fish has the body naked, intermediate in shape between 

 Barbels and Minnows. It has four barbels ; and four chisel-shaped pharyngeal 

 teeth in a single row on each side. The ventral fin has a serrated bony ray ; 

 the anal fin in the female supports the urogenital tube. 



The genus has been found only in Dalmatia and adjacent districts. 



Anlopyge hugelii (HECKEL). 



This species (Figs. 51, 54) has a very pointed, small, conically-elongated 

 snout, and it is distinguished by its naked skin, which is silvery on the back 

 and sides, or may be marked with blackish-brown spots. The male and female 

 fishes differ so greatly in appearance that we will notice each separately. In the 

 fully-grown female the body is much higher than in the males or young, and 

 the dorsal outline rises from the back of the head to the dorsal fin in a con- 

 spicuous curve. The depth of the body is nearly one-quarter of its length. 



The head is conical and pointed, it is half as broad as long (Fig. 52) ; the eye 

 is rather small, nearly in the middle of the head, and separated from the opposite 



