contained in Cotich^s " Fishes of Corn^mallJ* 



23 



having scales on the anterior gill covers. The body is not 

 nearly so much attenuated posteriorly ; the ventral fins are 

 sharp and slender, those of the mackarel wider and more 

 blunt : in the former, the pectorals lie close to the body ; in 

 the latter, they stand off; in the latter, also, is a large angular 

 plate, the point directed backward, close above the pectoral 

 fins, which does not exist in the Spanish mackarel iS, macu- 

 latus C). 



It seems to be the Colias RondeleteV of Ray. {Syn. Pisc.^ 

 p. 59.) I have given it the name by which it is known to our 

 fishermen. ; 



This fish is scarce, but some are taken every year. It does 

 not often take a bait, although the fishermen inform me that 

 this sometimes happens ; and that its infrequency is owing to 

 the difference of feeding rather than to want of rapacity. It 

 is more frequently taken in drift nets ; but even then it is only 

 one at a time, and at considerable intervals. It is in no esti- 

 mation as food. 



Mud Lamprey (Petromy"^zon L. c^^cus Ray); Class VI. Chou' 

 dropterygous Fishes. 



This species {Jigs, 9, 10.) grows to the length of 6 in., and 

 is about the size of a goose-quill. The mouth, when open, is 



irregularly oval, throat capacious, teeth large and blunt, 

 placed circularly from the roof of the mouth to the under 

 jaw ; upper lip prominent, fleshy, movable at the sides. 

 Orifice on the head ; apertures for breathing along the sides, 

 seven in number. The body dilated at this part. No eye 

 discoverable. Body cylindrical to the vent, which is far 

 back, thence compressed, tapering. First dorsal fin on the 

 hind part of the back, small and narrow ; the second close to 

 it, elevated, and then narrow, passing round the extremity of 

 the body, and below reaching half-way from the tail to the 

 vent. Colour a dusky yellow, dark on the back, light below ; 

 fins light. 



c 4 



