266 NORTHERN ZOOLOGY. 



York and Massachusetts, but their identity with those known to European natural- 

 ists by the same names is questionable. Dr. Mitchill enumerates twenty-four plates 

 in the disk of his Big oceanic sucker {echeneis naucrates), while the naucrates of 

 Cuvier has only twenty-two ; and Dr. Smith's figure of the echeneis of Boston, 

 which he refers to remora, represents a much more slender fish than the Mediter- 

 ranean one of that name, the number of the plates of the disk being, however, 

 eighteen in both. Echeneis lineata of Schneider has only ten plates in ihe disk, 

 and E. osteocheir of Cuvier has the pectoral rays compressed, bony, and terminated 

 by a slightly crenated little plate. 



[110.] 1. Echeneis naucrates. (Auct.) Ship-master echeneis. 



Family, Kcheneideae. Genus, Echeneis. Artedi. 



A specimen of an echeneis in the Zoological Museum, obtained by Mr. Audubon 

 on the banks of Newfoundland, has twenty-two pairs of nearly transverse plates in 

 its disk, agreeing in this and other respects with the accounts of the echeneis 

 naucrates, to be found in ichthyological works, but I have had no opportunity of 

 procuring an authenticated example of the latter wherewith to compare it. The 

 naucrates, or ship-master, inhabits all the warmer districts of the Atlantic, and was 

 taken by Mr. Collie among the South-Sea Islands. 



