426 



SPABID^, 



lower. The other teeth, behind this series, arc arranged in a broad 

 band, similarly but less developed, with the cutting margin not yet 

 pointed. 



The coloration is now a uniform greyish ; but the fish appears to 

 have been red in life, \vith the dorsal, anal, and ventral fins blackish 



inches, lines. 



Total length 20 6 



Height of the body 7 



Length of the head 4 



Distance between the eyes 1 10 



Diameter of the eye 10 



Length of the fifth dorsal spine 1 9 



of the second anal spine 1 3 



of the pectoral fin 5 6 



of the ventral fin 3 6 



of a scale 6 



Height of a scale 8 



7. DIPTERODON. 

 Dipterodon, Cuv. ^ Val. vii. p. 274. 



A series of trenchant incisors in both jaws ; no molars ; no teeth 

 on the vomer or the palatines. Cheek scaly. Mimite scales cover 

 the greater part of the soft portions of the vertical fijis. Dorsal 

 deeply notched, with ten spines, nine of which form the spinous 

 portion ; three anal spines. Praeoperculum denticulated. Scales 

 small. Six branchiostegals. Air-bladder simple. 



Cape Seas. 



1. Dipterodon capensis. 



Coracinus, Gronov. Zoophyl. no. 220. 



Dipterodon capensis, Cuv. ^ Val. vii. p. 270. pi. 188. 



Coracinua aper, Gronov . Syst. ed. Gray, p. 57. 



D.9|t7^- ^-Thl' I-lat.75. Vert. 10/15. 



The height of the body is 2f in the total length. Uniform dark 

 brown. 

 Cape Seas. 



a. Adult : stuffed. Cape Seas. Procured from Sir A. Smith. 

 h. Adult. 



<5. Half-grown : stuifcd. Cape Seas. Procured from Sir A. Smith. 

 d. Adult : skin. From Gronov's Collection. 



8. PROTERACANTHUS. 

 Crcnidons (Girella), sp,, Cant. Cafaf. p. 52. 

 In both jaws one or two series of flat tricuspid tcoth, behind 

 which is a band of similar teeth, replacing the former. No molars. 

 Checks and operdcs scaly. A recumbent spine before the dorsal ; 



