526 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



338. Thyrsites solandri, Ciiv. & Val. 



Gunth. Cat. Fishes II., p. 352. 



D. 18. 1/8. II. A. 1/18. II. 



The ventral is reduced to a single spine. The height of the 



body is five times and a-half in the total length. Coloration 



uniform. 



Coast of New Holland (Cuv.) 



Division YIII. ACANTH. COTTOSCOMBEIFOBMES. 

 Spines developed in one at least of the fins. Dorsal fins either 

 continuous or close together ; the spinous dorsal if present always 

 short, sometimes modified into tentacles or into a suctorial disk ; 

 soft dorsal always long, if the spinous is absent ; anal similarly 

 developed as the soft dorsal, and both generally much longer 

 than the spinous, sometimes terminating in finlets. Yentrals 

 jugular or thoracic if present, never modified into an adhesive 

 apparatus. No prominent anal papilla. 



Family XYI. ACEONUEID^. 



One dorsal fin with several pungent spines anteriorly ; one or 

 more bony spines on each side of the tail ; teeth compressed, 

 truncated or lobate, closely set in a single series. Herbivorous 

 Fishes. 



Genus Acakthurus, B1. 



A single series of lobate incisors, which are sometimes moveable, 

 in the jaws. A moveable spine in a groove on each side of the 

 tail. Ventral fins composed of a spine and generally five rays. 

 One dorsal fin, the spinous portion less developed than the soft ; 

 anal spines three. Scales minute, ctenoid, sometimes spiny. 

 Branchiostegals five'; pseudobranchiae well developed ; air-bladder 

 large, forked posteriorly. Intestinal tract with several circum- 

 volutions; five to seven pyloric appendages. Vertebra) 9/13. 



Tropical seas. 



