300 arMNODONTtS. 



parts black with vermiculatcd greenish lines, or greenish with round 

 black spots ; lower parts uniform whitish o" blackish, or with nu- 

 merous irregular black spots. 



Fresh waters and coasts of %e East Indies. 



a. Adult (b inches). Ceylon. Presented by Sir J. E. Tcnnaut. 



6. Half-grown. Malabar. From Mr, Day's Collection. 



c. Young. Singapore. 



d-e. Adult and half-g,fown : skins. Pinang. From ^r. Cantor's 



Collection. — Types of T. simidans, 

 f-h. Half-grown and young. Borneo. Presented by the Marquis 



Doiia. 

 i-Jc. Half-grown and young. Borneo. 

 I. Adult (6-|- inches). East-Indian archipelago. From Dr. Blceker's 



Collection. — One of the types of T. potamophilus. 

 m, n. Half-grown. East-Indian archipelago. From tlie Collection 



of Dr. van Lidth de Jeude. 

 0. Half-grown. Philippine Islands. Purchased of Air. Cuming. 

 p. Half-grown : stuffed. India. 



II. Nasal orgaiis quite iiiconsjncuutis. Back compressed into a keel : 

 Anosuiius (Ptrs.). 



47. Tetrodon margaritatas. 



? Paterson, Phil. Tratis. vol. Ixxvi. p. 382, tab. 13. 



? Tetrodon electricus, Gm, L. i. 1445 ; Bl. Schn. p. o07. 



Tetraodou uiargaritatus, Hiipp. Ail. Fiseh. p. 00. 



Tetrodon solaudri, Uichurds. Voy. Stdph. Fish. p. 125, pi. 57. figs. 4- 



; Voij. Samaranff, Fish. p. 19. 

 insignitus, Iticha?-ds. Voy. Samarany, Fish. p. 20, pi. 9. figs. 1 & 



2 (these tigm-es are twice the natural size). 

 petersii, Bianconi, Mem. Acad. Sc. Inst. Bonon. vi. 1855, p. 147, 



pi. 2. hg. 2. 

 ocellatus, Peters, Wief/7n. Arch. 1855, p. 2/4, or Monatsb. Ak. 



Wiss. Bcrl. 1855, p. 402. " 



A large black ocellus edged with blue on the back on each side 

 if the dorsal fin. The snout, sides, and caudal Jin with yellowish 

 darlc-edged ocelli of the size of the impil of the eye. On the upper 

 parts the markings are more or less confluent, forming transverse 

 or angular bluish dark-edged lines ; they are most constant round 

 the eye and on the back of the tail. All the lines round the eye are 

 subhorizontal, none vertical. Also, on the posterior part of the caudal 

 fin the ocelli are replaced by subvertical bands. No band on the 

 side of the mouth. Upper profile of the snout slightly concave. 

 Nearly entirely covered with minute spines. 



Vert. 8/9. 



Eastern coasts of Africa ; Tahiti. 



a, b, c-d. Adult and half-grown. Zanzibar. From Lieut.-Col. 

 Playfair's Collection. 



e. Adult : stuifed. Zanzibar. From Licut.-Col. Playfair's Collec- 

 tion. 



