390 



MR R. S. CLARK ON THE 



Body and fins speckled dark grey on a silvery grey background ; black spot 

 on shoulder and on tip of snout ; several indistinct and irregular cross bars on 

 the body. Description based on six examples, 244 mm. to 274 ram. in total 

 length. The Indo-Pacific form (Saurus varius Giinther) is closely allied to 

 this species, but differs in having longer pectorals and pelvics, fewer dorsal 



FIG. 2. Synodus syii"<ln*. 

 Reproduction of coloured drawing by Mr Cuthbertson from fresh specimen. 



FIGS. 3 and 4. 

 Side view of two specimens of Synodus synodus. 



and anal rays, body more elongate, and coloration lighter. Saurus 

 meleagrides Val., from Buenos Aires, is also nearly related. The pectorals 

 are longer, and the dorsal and anal rays are different. It is figured in 

 D'Orbigny's Voyage dans I'Amtrique intridionale. 



There seems sufficient proof that the " Scotia " specimens are identical 

 with those described from St Helena and from Bahia by Cuvier and 



Valenciennes. 



(ROT. PHY. soc. PROC. , VOL. xix., 50.) 



