MANUAL OF NATURAL HISTORY. 97 



ferane connecting the ventrals, forming an 

 oval, concave disk ; branchial spiracle one ; 

 eyes on each side, approximating. 



8. FAMILY. Sucking-Fishes (Echeneidae). Body 



lengthened, sub-anguilliform, covered with 

 small scales ; crown flat, bearing a flattened 

 disk, composed of moveable, transverse, car- 

 tilaginous laminse, placed obliquely back- 

 wards; mouth cleft horizontally. 



9. FAMILY. Slender -rayed Blennies (Chiridse), 



Body compressed ; dorsal rays slender ; ven- 

 trals distinct ; several lateral rows of pores 

 along side of body ; mouth slightly cleft. 



10. FAMILY. Wolf -Fishes (Anarrhichadidae). Body 



elongate, slightly compressed j dorsal, caudal, 

 and anal fins united ; rays soft. 



11. FAMILY. Flute-Mouths (Fistulariidee). Body 



long, slender, linear ; scales none j long tubu- 

 Jar projection in front of cranium formed by 

 an extension of anterior cranial and facial 

 bones ; mouth terminal, vertical. 



12. FAMILY. Sea-Snipes (Centriscidse). Body oval 



or oblong, unelongated, compressed ; snout 

 tubular, prolonged ; first dorsal spines long ; 

 body covered with scales, or mailed with 

 broad scaly pieces. 



13. FAMILY. Lancet-Fishes (Acanthuridse). Body 



compressed, ovate or oblong ; tail armed with 

 lateral spines ; dorsal single ; mouth small, 

 slightly or not at all protractile. (Theutyes, 

 Cuv.) 



