302 GTMNODONTES. 



snout nearly straight. Only the hindmost part of the sides of the 

 tail is spineless. 



Indian Ocean and archipelago. 



a. Half-grown. Zanzibar. Presented by Lieut. -Col. Playfair. 



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



Collection. — One of the t^'pical specimens. 



c. Adult : skin in spirits. 



50. Tetrodon janthinoptems. 



Tropidichthys s. Anosmius s. Psilonotus s. Canthogaster janthino- 



pterus, Bleeh. Nat. Ti/ds. Ned. Lid. viii. p. 429 ; Atl. Iclith. Gymnod. 



p. 82, pi. 9. fig. 2. 



A black ocellus on each side of the base of the dorsal fin. Sides 



of the body and tail with numerous round whitish spots larger than 



the pupil, and separated fi'om one another merely by a network of 



the brown ground-colour. Sides of the head with scarcely any spots, 



but some bluish horizontal lines cross the eye. Back and caudal fin 



not spotted. Upper profile of the snout nearly straight. Only the 



free portion of the tail is spineless. 



Celebes and Amboyna. 

 a. One of the typical specimens. From Dr. Bleeker's Collection. 



51. Tetrodon punctatissimus. 



Scarcely distinct from T. janthinopterus. 



No black dorsal spot. The entire body, forwards to the posterior 

 parts of the head, covered with numerous round whitish spots, smaller 

 than or as large as the pupil, and separated from one another 

 merely by a network of the brown ground-colour. Scarcely a trace 

 of lines crossing the eye. Fins not spotted. Upper profile of the 

 snout slightly concave. Tail and hind part of the trunk spineless. 

 D. 9. 



Pacific coast of Panama. 



a. Several specimens, 2| inches long. Panama. From Capt. How's 



Collection. 



b. Three inches long. South America. Purchased of Mr. Cuming. 



52. Tetrodon amboinensis. 



Psilonotus amboinensis, Bleek. Ned. Tyds. Dierk. ii. p. 180; Ail Ichth. 



Gymnod. tab. 9. fig. 7. 

 Canthogaster amboinensis, Bleek. Atl. Ichth. Gymnod. p. 79. 



Dorsal spot none. Body ivith numerous, but rather distant, round 

 or ovate luhite spots about as large as the puiiil, between which black 

 spots similar in size and form are interspersed. They do not extend 

 on the caudal fin, or only on its basal half. Dorsal fin with 11 or 

 12 rays. 



Indian Ocean and archipelago. 



Var. amboinensis. The sides of the head in front of the pectoral 



