50. CEPHALACANTHTJS. 223 



shorter one haKway between the former and the dorsal fin ; the first 

 dorsal spine detached from the others. The distance between the 

 eyes is one-third the length of the head, and nearly equal to that 

 of the prseopercular spine ; the distance between the two scapular 

 spines is rather less than the depth of the notch between. Pectorals 

 spotted with brown and dotted with bli;ish-white. 

 Indian Ocean and Archipelago. 



a. Half-grown : not good state. Japan. Purchased of Mr. Frank. 



I. Half-grown. China. Presented by Sir J. Eiehardson. 



c, d. Young. China. Presented by Captain Sir E. Belcher. 



e. Half-grown. Amboyna. Purchased of Mi*. Franli. 



/. Young. Amboyna. Pui'chased of Mi\ Frank. 



g. Adult : stulied. Cape Seas. Presented by Sir A. Smith. 



h. Adult : bad state. Old Collection, as Trigia dissimilis. 



{. Half-grown. 



k, I. Young. Presented by the Zoological Society. 



3. Dactylopterus macracanthus. 



Bleaker, Celebes, vi. p. 449. 



D. 1 I 1 I 6 I 8. A. 6. 



A long, isolated, ray-like filament behind the occiput ; the distance 

 between the two scapular spines is 1| to 1|- in the depth of the 

 notch between, which equals the length of the prseopercular spine ; 

 the scapidary spines reach to the vertical from the second spine of 

 the continuous first dorsal fin. Pectoral with a large, round, black 

 blotch, spotted with yeUow. 



Molucca Sea. 



«. Dried : bad state. 



4. Dactylopterus chirophthalmus. 



Bleeker, Natmirk. Tt/dschr. Nederl. Lid. 1854, iv. p. 494. 

 D. 1 I 1 I 6 I 8. A. 6. 

 A long, isolated, ray-lrlce filament behiad the occiput. The distance 

 between the two scapular spines is 1| to 1|^ in the depth of the notch 

 between, which equals the length of the praeopcrciUar spine. The 

 scapulary spines reach to the vertical from the middle of the con- 

 tinuous fii'st dorsal fin. Pectoral with a large, roimd, black, white- 

 edged spot. {Bl.) 

 Sea of Banda-Neira. 



50. CEPHALACANTHUS. 



Ceplialacanthus, Lacep. iii. p. 323 ; Cuv. 8,- Val. iv. p. 138. 

 Head paraUelopiped, with the upper surface and the sides entii'ely 

 bony ; scapula and angle of the praeoperculum produced into long 



