5. MONACANTHtrS, 253 



profile concave. Dorsal spine very feeble, above the middle of the 

 orbit. Part of the gill-opening in advance of, pectoral tin below, 

 the orbit. Caudal fin elongate, nearly as long as or longer than the 

 head, rounded ; dorsal and anal fins low. Ventral spine none. 

 Head and body with irregular blue spots and lines, and small round 

 black spots. 



Vert. 7/14. 



Tropical and subtropical seas. 



a. Adult. Cape Verde Islands. Presented by the Kev. R, T. 



Lowe. 

 h-c. Adult, 2Q inches long : stufl^ed. West Indies. Purchased of 



Mr. Scrivener. 



d. Adult : skin. Jamaica. Purchased of Mr. Pamell. 



e. Young. South America. 



/. Half-grown. Zanzibar. From Lieut.-Col. Playfairs Collec- 

 tion. 



g. Half-grown : skin. Zanzibar. From Lieut.-Col. Playfair's Col- 

 lection. 



^'. Young: skin. Pinang. From Dr. Cantor's Collection. 



/. Young. Amboyna. Purchased of Hr. Frank. 



A-. Young. Siam. Purchased of Mr. Jamrach. 



I, m, n-p. Adult, half-grown, and young. 



q. Adult : stufied. 



r. Adult : skeleton. Cape Verde Islands. Presented by the Uev. 

 R. T. Lowe. 



Balistes Uturosiis, Shaw, Gener. Zool. v. p. 405, is described thus: 

 — Length nearly two feet : habit long and slender : colour jet-black, 

 with numerous, abrupt, blue streaks in an obliquely longitudinal 

 direction : fins and tail white ; a blue bar across the latter ; under 

 jaw longer than the upper : over the eyes a very long, slender, black 

 spine : along each side of the head, from the eyes to the mouth, a 

 narrow white stripe : eyes yellow. Native of the Indian seas : ob- 

 served about the coasts of Otaheitee by Captain G. Tobiu. 



38. Monacanthus personatus. 



Aluteres personatus, Less. J'oy. Coq. Zool. ii. p. 106; Bleek, Ned. 

 Tyds. Dierk. 1865, iii. p. 29. 



D. 46. A. 48-50 



Skin finely velvety. Body oblong, its depth being less than one- 

 half of the total length, without caudal, which is one-third of the 

 total length. Snout pointed, with the upper profile concave. Dorsal 

 spine above the orbit. Ventral spine none. Head black ; mouth 

 light greyish. A long blackish blotch on the back ; another, 

 rounded, near the caudal fin, and two larger obKque spots on the 

 sides. Caudal fin black ^with white stripes. (Less.) 



New Guinea. 



Length of specimen H inches, of caudal fin 2 inches. 



