TETliODON. 



143 



1. TETliODON FAHAKA. 

 Linn, in Hnssolq. Rcise Palwst. p. 441 (1702) ; Giintli. Cat. Fisli. viii. \>. 1".10 



(1870); Bouienjr. Fi.^h. Nile, i>. o44, pi. xcvii. (l'J07) ; lVlU--r. I'oiss. Ba.ss. 



Tcliad, p. 140, fig. (Ill 14). 

 Tetrodon lineatiis, Linn. Syst. Nat. i. p. 411 (17GC)) ; Forsk. Uesor. Aiiiui. p. 7G 



(177.5) ; Giintli. Petlierick's Trav. ii. p. 207 (18G9). 

 Tetrodon ]>lf/sa, Geoflr. Dfiscr. Egypte, I'oiss. p. 19, pis. i. & ii. (li^l*'.'); Joannis, 



Ma;i;. Zool. lt!;3.0, iv. pi. ii. 

 Bon Jerap, Hifaud, Voy. Egy|it(', ]il. cxcix. (18;?0). 

 Tetrodon strif/osiis, Bennett, Proo. Zool. Soc. 1834, p. 4t). 

 Cnii/ruvioit faluda, Steind. Sit/.l). Ak. Wien. Ixi. i. 1870, p. .")72. 



Head as long as broad or a little longer than broad, its length (to the 

 gill-opening) 3 to 3| times in total length. Suout rounded, twice as 



Fiir. 97. 



Tetrodon J'aliaka, 

 Khartum (F. N.). |. 



long as eye, which is lateral and contained 6 to 7 times in length 

 of head * ; interorbital region feebly convex, 2 to 'Ih times in length of 

 head ; no nostril, but two nasal tentacles on each side, measuring about 

 ^ diameter of eye. Dorsal rounded, 12-14. Anal rounded, 10-11, 

 originating below middle of dorsal. Pectoral rounded-subtruncate, f to 

 i length of head. Caudal rounded, as long as or a little longer tlian 

 head. Caudal peduncle i to §^ length of head, Ij to 1| times as long 

 as deep. Head and body with minute spines, except on snout, round 



* Young speciineus have the Iiuad and the eve much larger in proportion than tiie 

 adult. 



