﻿430 ACTIBTOPTERTGII. 



Fins large ; pectoral fin-rays un- 



articulated, except distally ; anal 



and pelvic fins extended ; scales 



large,thick, slightly overlapping, 



obliquely sculptured ; dorsal 



ridge-scales much enlarged. . . . Atherstonia (p. 514). 

 Fins large, fulcra minute ; dorsal 



and anal fins short-based ; scales 



very small, obliquely sculptured. Myriolepis (p. 515). 

 Fins large, fulcra minute ; pectoral 



fin-rays unarticulated, except 



distally ; dorsal and anal fins 



somewhat extended ; scales 



small, thick, slightly overlap- 

 ping, obliquely sculptured .... Oxygnathus (p. 516). 

 Fins large, with fulcra ; pectoral fin- 

 rays articulated ; dorsal and 



anal fins short-based ; scales of 



moderate size, thick, slightly 



overlapping, coarsely ridged and 



serrated Centrolepis (p. 520). 



Fins large, with fulcra ; pectoral fin- 

 rays articulated; dorsal and 



anal fins short-based ; scales 



large, thin, very deeply over- 

 lapping, externally striated. . . . Cryphiohpis (p. 522). 

 Fins large, fulcra minute or absent ; 



dorsal and anal fins short-based ; 



scales large, thin, very deeply 



overlapping, externally tuber- 



culated Coccolepis (p. 523). 



II. Fin-rays simple ; caudal fin obliquely 

 truncated. 

 Teeth minute ; dorsal fin extended, 



not remote; scales sculptured, 



and dorsal ridge-scales much 



enlarged Holurus (p. 526). 



Genus C ANOBIUS, Traquair. 



[Trans. Boy. Soc. Edinb. vol. xxx. 1881, p. 46.] 



Trunk fusiform. Mandibular suspensorium nearly vertical ; 

 snout rounded, slightly projecting over the mouth ; gape small [and 

 teeth unknown]. Fin-rays articulated and distally bifurcating ; 

 fulcra minute. Dorsal and anal fins short-based, triangular- 



