y 



Mf\ Pcck^s account of four remarlahh TiJIhs, 



Tlie head had no remarkable elevations except that over th^ 

 nofc and the futures exprcflcd by dotted lines m the figure. 

 It is one of the roundefl of its genus. The head is of the 

 fame breadth with the body, " gradually decreafing toward 



the nofc. The mouth is quite under tl:ie head j ' when fliut, 

 it is femilunar ; when open, round ; not far from the extrem- 

 ity of the fnout and included in fhiall round lips. To the 

 under lip is fixed a bilobate, beardlike, papillofe caruncle. 

 There are no teeth." The eyes are rather large, the iris of a 



i 



a pale, golden colour. There are III rays in the branchial 

 membrane. "Over each eye is a longitudinal future." There 

 is no tranfverfe future between the noflrils. ** On the covers 

 of the gills are two, one on each fide, beginning near the lobes 

 of the caruncle of the under lip and going up arched toward 

 the eye. Near the extremity of the fnout begins on each fide 

 a longitudinal one, paiTes round the eye and mounts in a 

 curvature behind it, then it goes on" a little waving " to the 

 end of the head, where it again gets downwards and joins the 

 lateral line. Where the head joins the body the two futures 

 are conneded by a tranfverfe one, which, as it were, feparates 

 the head from the body. The lateral line at firfl defcends 

 then runs on flraight, rather nearer the back than the belly, 

 to the beginning of the tail," 



The top of the head, and back are of an umber colour, be- 

 coming paler on the fides ; the body underneath is whitifh 

 with a caft of fawn colour, and according as it is placed in tlie 

 im\ reflects a golden luflre. 



(( 



The 



