FAMILIES AND GENERA. 65 



Cyelopteridse. (ACANTHOPTERYGII.) Plate viii. 



Cyclopterus, two dorsals, first partly hidden, 60. 

 Liparis, one dorsal, 61, 62. 



Cyprinidse. (PHYSOSTOMI.) Plates xxii. and xxiii. 



Cobitis, 6 barbules, erectile spine beneath eye, 183. 

 Nemachilus, 6 barbules, no erectile spine beneath eye, 184 

 Cyprinus, 4 barbules, dorsal with 22 rays, 169. 

 Barbus, 4 barbules, dorsal with n rays, 172. 

 Gobio, 2 barbules, anal 8 rays, pectorals 15, ventrals 8, 173. 

 Tinea, 2 barbules, anal 9 rays, pectorals 17, ventrals 10, 179. 

 Carassius, no barbules, anal short, with 5 to 7 rays, 170, 171. 

 Leuciscus, no barbules, anal short, with 8 to n rays, 174-178. 

 Abramis, no barbules, anal long, dorsal with spine, 180, 181. 

 Alburnus, no barbules, anal long, dorsal without spine, 182. 



CyttidSB. (ACANTHOPTERYGII.) Plate iv. 

 Zeus, 29. 



Daetylopteridse. (ACANTHOPTERYGII.) Plate viii. 

 Peristethus, two free pectoral appendages, 59. 

 Agonus, no pectoral appendages, 58. 



Diodontidse. (PLECTOGNATHI.) Plate xv. 



Tetrodon, oesophagus distensible, tail and caudal fin distinct, 122. 

 Orthagoriscus, resophagus not distensible, tail truncated, 123, 124. 



Esoeidae. (PHYSOSTOMI.) Plate xxiv. 

 Esox, 185. 



GadidSB. (ANACANTHINI.) Plates xvi., xvii., xviii. 

 One dorsal, one anal. 



Brosmius, dorsal long, anal long, 142. 



Motella, front of dorsal a narrow fringe, first ray prolonged, 137- 

 140. 



Two dorsals, one anal. 



Merluccius, barbule absent, teeth large, 133. 



Phycis, barbule present, first dorsal short, second dorsal long, 

 ventral a long bifid filament, 134. 



Molva, barbule present, first dorsal short, second dorsal long, 

 ventral of 6 rays, teeth large in lower jaw, 135. 



