MALACOPTERYGIANS : ANGUILLID^. 351 



which is from ten to twenty inches long, and inhabits 

 the North Atlantic. Pennant states that, upon putting 

 one into a pail of water, it adhered so firmly, that he lifted 

 the whole pailful, several gallons, by taking hold of the 

 fish by the tail. . 



ECHENEID.E, OR REMORA FAMILY. This Family em- 

 braces fishes which have a flattened disk upon the head, 

 composed of a number of transverse cartilaginous lam- 

 inae directed obliquely backwards, serrated or spiny on 

 the hind edge, and movable, so that by creating a vacuum 

 between them, or by hooking on to various bodies by 

 means of the serrated edges, they are enabled to attach 

 themselves very firmly. The Genus Echeneis is the prin- 



Fig. 228. Fig. 229. 



White-tailed Remora, E. albicauda, Mitch. Disk of Remora. 



cipal one. The species are few, and chiefly tropical ; but 

 some are taken on the coast as far north as Labrador. 

 They are from twelve to thirty inches long, and often found 

 attached to other marine animals. 



SUB-SECTION IV. 



APODAL MALACOPTERYGIANS. 



THIS Order is represented by one great family, con- 

 taining about one hundred known species. 



ANGUILLIDJE, OR EEL FAMILY. This Family has the 

 body much elongated, cylindrical, and covered with a 

 thick, soft skin. The scales, when present, as in the 

 common Eel, are scattered, and deeply imbedded in the 

 skin. 



The Genus Anguilla Eels proper has the dorsal 



