196 



Two sorts of Pegasus, — Nutans and Lancifer, are found in 

 Australia : the first in Queensland, and the second on the coast 

 of Tasmania ; but I have not yet seen either. 



Order V. LOPHOBEANCHIL 



" The Gills are not laminated, but composed of 

 rounded lobes, attached to the branchial arches. 

 Gill- cover reduced to a large simple plate. Air- 

 bladder simple, without pneumatic duct. A dernal 

 skeleton, composed of numerous pieces arranged in 

 segments, replaces more or less soft integuments. 

 Muscular system not much developed. Snout 

 produced. Mouth terminal, small, toothless, formed 

 as in Acanthopterygians." 



SYNGNATHIDiE. 



" Gill-openings reduced to a very small opening 

 near the upper posterior angle of the gill- cover. 

 One soft dorsal fin ; no ventrals, and sometimes one 

 or more of the other fins also absent. 



" Chiefly marine fishes, occurring in all parts of 

 the tropical and temperate regions ; many species 

 entering fresh waters." 



HIPPOCAMPUS. 



This name was given by Dr. Leach to the fish commonly 

 known as Sea Horse, and has been adopted by all authors. It 

 has since been restricted, and Dr. G-unther gives the genus the fol- 

 lowing characters : — " Trunk compressed, more or less elevated, 

 composed of from ten to twelve rings ; shields with more or less 

 prominent tubercles or spines ; occiput compressed into a crest, 

 terminating at its superoposterior corner into a prominent knob 

 (coronet). Supraorbital, temporal, and humeral regions, with 



