46 TABULAR SCHEME. 



Body rounded and smooth ; pectorals absent Nerophis, 



116-118. 



Body riband-shaped 



Anal absent ; dorsal with crest Regalccus, 103. 

 Anal and ventrals absent Trichiurus, 22. 

 Body ridged Hippocampus, ng. 

 Vertical fins continuous 



Body truncated ; dorsal and anal placed far back 



Orthagoriscus, 123, 124. 

 Body depressed in front, compressed behind; a sucker 



between the ventrals Lepadogaster (gouanii), gg. 

 Body tapering from a large head Coryphanoidts, 148. 

 Body riband-shaped Cepola, 74. 

 Body long 



Skin not extending over gill-covers 

 Ventrals a pair of filaments Opliidium, 143. 

 Ventrals absent Fierasfer, 144. 

 Skin extending over gill-covers 

 Without pectorals Murana, 168. 

 With pectorals. 



Upper jaw the longer Conger, 167. 

 Lower jaw the longer Anguilla, 166. 

 Tail heterocercal 



Body with bony plates in five rows Acipenser, 220. 

 Body without bcny plates 

 Anal absent 



Dorsals with spines 



Spine in the middle of each dorsal Centrina, 235. 

 Spine in front of each dorsal Acanthias, 233. 

 Dorsals without spines ; skin spiny 

 First dorsal in the middle of the back Lam-argns, 234. 

 Both dorsals near the tail Echinorhmus, 236. 

 Anal present 



One dorsal Notidauus, 22g. 

 Two dorsals 



First dorsal above space between ventrals and anal 

 Anal long, extending almost to caudal Pristiums, 



232- 

 Anal moderate, its length or more from caudal 



Scy Ilium, 230, 231. , 



First dorsal above space between pectorals and 



ventrals 



Eye with nictitating membrane 

 Head hammer-shaped Zygcena, 224. 

 Head conical 



Pit at base of caudal ; no spiracles CarcJiarias, 



222. 



No pit at base of caudal 

 Second dorsal almost as large as first 



Mustelus, 225. 

 Second dorsal small Galeus, 223. 



