24 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



Second Specimen.— Breadth or thickness at the pectorals about ten and a half times in the entire 

 length. Depth at that point less than the breadth. Canine teeth in the lower jaw smaller than 

 those above, and not set at such regular intervals as in the first specimen* Scarcely any 

 appearance of denticulations on the membranous border of the preopercle. Distance between 

 the two dorsals a little less than the length of the first. Pectorals contained eight and a half 

 times in the entire length. Fin-ray formula as follows : — 



D. 9-32; A. 42; C. 15, &c. ; P. 17; V. 1/5. 



Length 14 inches. 



In all other respects exactly similar to the specimen first described. 



Habitat, coast of Northern Patagonia, and Maldonado. 



Mr. Darwin's collection contains two specimens of this fish, which was first 

 discovered by MM. Quoy and Gaimard at Rio Janeiro. The larger one was 

 caught by hook and line in fourteen fathoms water on the coast of Patagonia, in 

 lat. 38° 20'. The second was taken at Maldonado, where he states it to be com- 

 mon. They differ in- several respects from the description and figure in the 

 "Histoire des Poissons," of Cuvier and Valenciennes ; but as they also differ a 

 little from each other, the species is perhaps subject to variation. Amongst other 

 points, I may mention the scales on the jaws, which are expressly stated by Cuvier 

 to be without scales ; and also the emargination of the membrane between the 

 rays of the second dorsal and anal, which is not represented in his figure, nor 

 alluded to in his description, though very striking. This last character appears, 

 however, in the figure given in the Zoological Atlas of Freycinet's voyage, which 

 is on the whole a more correct representation. " When cooked, was good 

 eating." — D. 



Family. -MULLIDiE. 



1. UPENEUS FLAVOL1NEATUS. CllV. et Vol. 



TJpeneus flavolineatus, Ouv. et Vol. Hist, des Poiss. torn. iii. p. 33 G. 



Form. — Considerably elongated. Greatest depth contained five times in the entire length, caudal 

 excluded. Head three and a half times in the same. Dorsal line nearly straight. Profile very 

 convex. Crown between the eyes broad and somewhat depressed, forming a slight hollow. 



* Probably these teeth are liable to be lost or broken off, so as seldom to occur in exactly the same number 

 and mode of arrangement in two individuals. 



