70 TELEOSTEI : ISOSPONDYLI. — XIII. 
44; 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, 24 in head. Head 44; depth 4. D. 12 
A. 27. Cumberland R. to Ala. (ceAjvn, moon; ay, eye.) 
Famity XXVIII. ALBULIDA. (THe Lapy-risuEs.) 
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.) 
163. A. vulpes (L.). Lapy-risH. Bone-risH. MAcABI. 
A band of elongate scales along middle of back; brilliantly silvery. 
Head 33; depth 4. D.15. A.8. Scales 9-71-7. L. 30. Warm 
seas, N. a Cape Cod. (Lat., fox.) 
Famity XXIX. ELOPIDAX. (Tue Tarpvums.) 
Body elongate, more or less compressed, covered with silvery, 
eycloid 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. 
a. Body elongate, with small scales; A. smaller than D.; pseudobranchize 
present. (Elopinw.) . «1+ » » - « « « Eops, 69. 
aa. Body oblong, compressed, with very tee ee no pseudobranchie ; 
last ray of D. much produced. ( M egulopine.). . . MErGALOps, 70. 
69. ELOPS Linnezus. (@doy, name of some sea-fish.) 
164. E.saurus L. Tenpounper. Silvery, darker above; gular 
plate about three times as long as broad; eye large; tail very long; 
C. deeply forked. Head 41; depth 5}. D.20. A.13. Scales 
12-120-13. L. 36. Warm ‘seas, N. to Cape Cod; remarkable for 
