494 



FISHES. 



which they even propagate their species. All species readily 

 accustom themselves to fresh water, and some {B. vulgaris) 

 have become entirely acclimatised in inland lakes. British 

 species are B. gattorugine (growing to a length of twelve 

 inches), B. ocellaris, B. galerita, and B. 2^^iolis, the common 

 " Shanny." 



Chasmodes is a genus allied to Blennius, from the Atlantic 

 coasts of temperate ISTorth America. 



Peteoscirtes. — Body moderately elongate, naked. Snout 



^^^^^ 



Fig. 225. — Petroscirtes bankieri, from Hong-Kong. 



generally short. A single dorsal fin ; ventrals composed of two 



or three rays. Cleft of the mouth 

 narrow ; a single series of immov- 

 able teeth in the jaws ; a strong 

 curved canine tooth behind this 

 'AW/ffllJMS^HSHM. „ series, that of the lower jaw much 

 stronger than that of the ujjper. 

 Head sometimes with tentacles. GUl- 

 ;; Fig. 226. — Dentition of the same, opening reduced to a small fissure 

 enlarged. above the root of the pectoral. 



Thirty species, from the tropical Indo- Pacific, of small 

 size. 



Salarias.' — Body moderately elongate, naked ; snout short, 

 with transverse cleft of the mouth ; a series of numerous small 

 teeth in the jaws, implanted in the gum and movable ; generally 

 a curved canine tooth on each side of the lower jaw, behind the 

 series of small teeth. Dorsal fin continuous, sometimes divided 

 into two portions by a more or less deep notch without a de- 



