fisiiks of new zealand. 15 



ACRONURIDtE. 



Body compressed, elevated, covered witli mimite scales ; tail armed 

 ivith one or more hony plates or sjnnes, sometimes aVtscnt in the yo\ing ; 

 mouth small, with a single series of compressed incisors in each jaw, 

 palate smooth ; one dorsal, tlie spinous portion less develoj^ed ; ventral 

 thoracic ; pseudobranchiaj well developed. 



ACANTHURUS. 



A moveable spine in a groove on each, side of the tail ; scales minute, 

 ctenoid. 



Tropical seas. 



22. ACANTHURUS TRIOSTEGUS. L. 



A. triostegus, GUnth., III., 327. 



^' 23-25 ^ '^^ 20 "5 



Length equal to twice the height ; upper jaw with seven lobate incisors 

 on each side ; caudal spine small ; upper profile of snout concave. 



Reddish, violet, wdth five blackisli brown transverse bands, the anterior 

 of whicli passes tkrough the orbit ; another streak of the same color 

 along the median line of the snout ; two bro^v^l spots, one above the 

 other, on the end of the tail (Gunth.) 



From Maiu'itius to Polynesia and New Zealand (Giinth.) 



I have seen no specimens. 



CARANGID^. 



Body more or less compressed, oblong or elevated, with small 

 scales or naked ; dentition variable ; spinous doi'sal rather less developed 

 than the soft ; no finlets ; ventral thoracic or absent ; vertebrfe 10/14 ; 

 lateral line often armed with plates ; two anal sjnnes remote from the soft 

 2Joriion ; seven branchiostegals. 



Trachurus. 



Body slightly compressed, covered with very small scales ; lateral 

 line loith a band of high plates from origin to end ; each jjlate with a 

 curved spine. Two dorsals, with eight spines and a horizontal anteiior 

 spine directed forwards ; two anal spines ; minute teeth in the jaws, on 

 the vomer, and on the palatiiaes. 



Coasts of Europe, Africa, India, and Australia. 



