70 TELEOSTEI: ISOSPONDYLI. — XIII. 



4J; depth 3. D. 12. A. 28. Scales 5-56-7. L. 15. Great 

 Lakes and Mississippi Valley, abundant ; one of our most beautiful 

 fresh-water fishes. (Lat., polished.) 



bb. Belly nowhere carinate. 



162. H. selenops Jordan & Bean. Body elongate, less com- 

 pressed; eye very large, 2J in head. Head 4^; depth 4. D. 12 

 A. 27. Cumberland R. to Ala. (o-eX^v?;, moon ; d)\^, eye.) 



Family XXVIII. ALBULID-ffi. (The Lady-fishes.) 



Body elongate, little compressed, covered with small, silvery 

 scales ; head naked ; snout conic, pig-like, overhanging the small, 

 inferior mouth ; maxillary short, with supplemental bone ; preorbi- 

 tal very broad ; sides of upper jaw formed by maxillaries ; eye 

 large, with an adipose eyelid ; gill rakers tubercle-like ; preopercle 

 with membranous edge; villiform teeth on jaws, vomer, and pala- 

 tines ; coarse blunt teeth on tongue and roof of mouth ; lateral line 

 present ; belly flattish, not carinate ; D. moderate, inserted before 

 v.; A. very small; no adipose fin; C. forked. One species, in 

 most warm seas. 



68. ALBULA (Gronow) Bloch & Schneider. (Lat., white.) 



168. A. vulpes (L.). Lady-pish. Bone-pish. Macabi. 

 A band of elongate scales along middle of back ; brilliantly silvery. 

 Head 3f ; depth 4. D. 15. A. 8. Scales 9-71-7. L. 30. Warm 

 seas, N. to Cape Cod. (Lat., fox.) 



Family XXIX. BLOPID^. (The Tarpums.) 



Body elongate, more or less compressed, covered with silvery, 

 cycloid scales; mouth large, terminal, the lower jaw prominent; 

 maxillary long, of three pieces, forming side of upper jaw ; an elon- 

 gate bony plate between branches of lower jaw (as in Amia) ; bones 

 of mouth almost all with villiform teeth ; eye large, with an adipose 

 eyelid ; gill rakers long and slender ; belly not compressed, covered 

 with ordinary scales ; D. over or behind V.; C. forked; no adipose 

 fin. Genera 2, species 4 or 5, in warm seas. 



1*. Body elongate, with small scales ; A. smaller than D. ; pseudobranchife 



present. (Elopinw.) Elops, 69. 



aa. Body oblong, compressed, with very large scales ; no pseudobranchise ; 

 last ray of D. much produced. (MegalopiruB.). . . Megalops, 70. 



69. ELOPS Linnaeus. (eXoi/', name of some sea-fish.) 



164. E. aaurus L. Tenpounder. Silvery, darker above; gular 



plate about three times as long as broad ; eye large ; tail very long; 



C. deeply forked. Head 4J; depth 5^. D. 20. A. 13. Scales 



12-120-13. L. 36. Warm seas, N. to Cape Cod ; remarkable for 



