CATALOGUE OF VERTEBRATES. 709 



with flexible tip; disk with twenty-one to twenty-six laminae. 

 Soft rays, 32 to 41 ; in anal, 32 to 38. 



"Echeneis naucrates. Indian Remora. 



" It is doubtful if this species has been met in the waters of 

 New Jersey. 



"Echeneis albicauda. White-tailed Remora. 



" The more usually met with of the three species. Specimens 

 have occasionally been met with in the Delaware, at Phila- 

 delphia." A variety, only, of E. naucrates. 



E. remora, Gill. (Remora squalipeta, Dald., jacobcea.) Remora. 



Body robust ; vertebrae twenty-seven ; dorsal rays twenty- 

 three, with eighteen lamellae in disk ; tail compressed ; head 

 broad ; tip of lower jaw not produced. Anal rays, 25. Usually 

 found attached to sharks. Color uniform dark brown. 



" This is a less species, less frequently met with than the pre- 

 ceding. In its habits it is identical." 



E. (or Remora) brachyptera, Lowe. Fourteen-laminated Remora. 



Uniform light brown, with paler fins ; disk shorter than base 



of dorsal, rather broad, with fourteen to sixteen laminae ; upper 



jaw angular. Dorsal rays, 30 ; anal rays, 26. Warm seas north 



to Massachusetts. 



RHOMBOOHIRUS. 



R. osteochir, Cuv. (E. tetrapturorum.) Stiff-finned Remora. 



Pectoral fins short, broad, with flat, broad rays ossified and 

 stiff,. otherwise like preceding, except paler under head ; mouth 

 larger ; disk broader and rougher, extending forward over tip 

 of snout, and with sixteen lamellas. Dorsal rays, 21 ; anal 

 rays, 20. West Indies to Cape Cod. Parasitic on species of 

 Tetrapturus. 



Family ELACATIDJE. 



Crab-eaters. 



Body fusiform, with small, smooth scales; head broad, pike-like; 

 mouth wide, with bands of short, sharp teeth on jaws, vomer, palatines 



