GRYSTES SALMOIDES. 25 



GENUS GRYSTES.— CwmVr. 



Characters. Dorsal fin single ; inter-maxillary, maxillary, vomerine, and 

 palatine teeth small, and thickly set, or card-like ; pre-opercle not serrated ; 

 branchial rays six. 



GRYSTES SALMOIDES. — irtce/JtVZe. 

 Plate IV. Fig. 2. 



Specific Characters. Head and body dusky above, often with a greenish or 

 bronzed tint ; lower jaw and belly white ; opercle with a bluish-green spot at its 

 angle. D. 9-14. P. 14. V. 1-5. A. 3-12. C. 19. 



Synonymes. Labrus salmoides, Lacep., Hist. Nat. Poiss., torn. iv. p. 716, pi. 5, fig. 2. 

 Grystes salmoides, Ciw. et Vol., Hist. Nat. Poiss., torn. iii. p. 54, pi. 45. 

 Grystes salmoides, DeKay, Zool. N. Y., part iv. p. 26, pi. 69, fig. 223. 

 Grystes salmoides, Slorer, Synops., p. 36. 

 Trout, VuJgo. 



Description. This fish is of an elongated, oval form, arched, thick and rounded 

 along the back ; thinner and nearly straight at the belly. The head is very large 

 and thick, especially between the eyes, and the snout is full and rounded ; the 

 facial outline is nearly straight, though the prominence of the inter-maxillary bone 

 gives it an incurved appearance. The eye is very large ; it is placed one diameter 

 and a quarter of the orbit from the snout, and two and a quarter diameters from 

 the posterior extremity of the opercle, with its lower margin slightly above 

 the median plane of the head. The nostrils are round ; the anterior and smaller 

 is rather nearer to the eye than to the snout, and both are on a line within the orbit. 



The mouth is very large, the posterior extremity of the upper jaw extending 

 behind the orbit; the lower jaw is the longer, and so projects as to make a part of 

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