210 SCLEBODEKMI. 



head, but as long and longer in young one's. There is a consider- 

 able interval between the dorsal fins in adult examples, whilst they 

 are close together in young. Spinous dorsal with a black blotch. 

 East Indies, China, and Japan. 



a. Adult (11 inches long). North China. Purchased of Mr, Jara- 



rach. 



b, c. Adult and young. China. 



d. Adult : skin. China. Presented by J. R. Reeves, Esq. 



e. Adult. Japan. Purchased of Mr. Jamrach. 



/. Half-grown. Formosa. Presented by Dr. Collingwood. 



g. Half-grown. Amboyna. Purchased of Hr. Frank. 



h. Adult. East-Indian archipelago. From Dr. Bleeker's Collection 

 as T. brcvirostris. 



7. Half -grown. East-Indian archipelago. From Dr. Bleeker's Col- 

 lection as 2\ nieuhofii. 



h. Half-grown, East-Indian archipelago. From Dr. Bleeker's Col- 

 lection. — Type of T. rJiodopterus. 



I. Half-grown. East-Indian archipelago. 



m. Young. East-Indian archipelago. From Dr. Bleeker's Collection. 

 — Type of T. hr achy soma. 



n. Young. Madras. Presented by Capt. Mitchell. 



0, p, q, r, s, t. Adult, half-grown, and young, 



u. Adult : skeleton. Purchased. 



2. Triacanthus biaculeatus, 



Balistes biaculeatus, Bl. tab. 148. fig. 2. 



Triacanthus biaculeatus, Cuv. R^gne An. ; Cant. Mai. Fish. p. 360 ; 



? Day, Fish. Malabar, p. 260. 

 oxycephalus, Bleek. Verh. Bat. Gen. xxiv. Balist. p. 27, tab. 



5. fig. 10, or Nat. Tyds. Ned. Ind. ii, p. 496, or Atl. Jchth. v. p. 90, 



Balist. pi. 6. fig. 3. 

 blochii, Bleek. Nat. Tyds. Ned. Ind. iii. p. 81, or Atl. Ichth. v. 



p. 89, Balist. pi. 3. fig. 1 ; Kncr, Novara, Fische, p. 394. 



angustifrons, Hollard, Ann. So. Nat. 1854, i. p. 45, pi. 2. fig. 2. 



— — macrurus, Bleek. Atl. Ichth. v. p. 91, Balist. pi. 8. fig. 3. 



D. 5 I 22-25, A. 16-19, 



The height of the body is contained from twice and one-half to thrice 

 and one-fifth in the total length (without caudal). Snout produced, 

 with the upper profile distinctly concave. The first dorsal spine as 

 long as the head, and sometimes considerably longer ; the second 

 very short, not much longer than the third. Spinous dorsal fin 

 with or without black spot. 



East Indies ; Australia. 



a. Adult: skin, Pinang. From Dr, Cantor's Collection. 



h. Adult. Java. From Dr, Bleeker's Collection, — Type of T. ma- 

 crurus. 



r. Adult. East-Indian archipelago. From Dr. Bleeker's Collec- 

 tion as T. blochii. 



