92 TELEOSTEI: SYNENTOGNATHI. — XVI. 
&, Body little compressed, its breadth more than 2 its greatest depth. 
TyLosuRus, 97, 
66. Body much compressed, its breadth not half its greatest depth. 
ATHLENNES, 98. 
aa. Jaws with minute teeth or none. : 
c. Maxillary grown fast to premaxillary; one or both jaws produced in 
a long beak. 
d. D. and A. with finlets; scales small; both jaws produced. (Scom- 
beresocine). ScoMBERESOX, 99, 
dd. D. and A. without finlets; ane jaw ‘short, the lower much pro- 
duced. (Hemiramphine.) 
e. Pectorals moderate, not longer than head without beak; body 
rather stout; sexes similar. . . . . . Hemrrampuus, 100. 
ee. Pectorals very long, twice head without beak; V. short; body 
very slender, almost band-Jike. . EuLEPTORHAMPHUS, 101. 
cc. Maxillary distinct from premaxillary ; both jaws short. (Zzoce- 
tine.) 
J. Roof of mouth with teeth; body elliptical in cross-section; V. 
long, inserted behind middle of body; D. high, its base about 
equal to anal base; snout and lower jaw short. 
Parexocartus, 102. 
ff. Roof of mouth nearly toothless; body quadrate in cross-section; 
P. long, about reaching base of C. 
g- Ventrals inserted anteriorly, much nearer tip of snout than 
base of C., small, not used as organs of flight. 
Havocyrsetvs, 103. 
gg- Ventrals inserted posteriorly, nearer base of C. than snout, 
used as organs of flight. . . . . . Exocarus, 104, 
97. TYLOSURUS Cocco. (ridos, callus, i. e. keel; odpd, tail.) 
a. Caudal peduncle depressed, with a dermal keel. 
6. D. and A. short, each of 14 to 16 rays; last rays of D. low; jaws slender. 
220. T. marinus (Bloch & Schneider). Gar-FisH. BILi-FIsH. 
NEEDLE-FISH. SILVER GAR. 
Scales and bones green; green, a silvery lateral band; a dark 
bar on opercles; P. pale. Head 23; depth 54 in head. Lat. 1. 300. 
L. 4 feet. Maine to Texas, abundant; ascending rivers. 
6b. D. and A. long, each of 21 to 24 rays; last rays of D. sometimes ele- 
vated; caudal keel black. 
221. T, acus (Lacépéde). Hounn-riso. AcGuson. Beak 
long, twice rest of head. Green, no lateral stripe. Lat. 1.380. L. 
5 feet. West Indies and Mediterranean; occasional N. to Cape 
Cod. (Eu.) (Lat., needle.) 
98. ATHLENNES! Jordan & Fordice. (dBdevvjs, without mu- 
cosity, an ancient epithet applied to Belone belone.) 
222. A. hians (Cuv. & Val.). Jaws long and very slender, the 
upper arched at base, so that the mouth cannot be closed; tail not 
1 This name was inadvertently printed “ Athlennes,” and may remain so ; “ Ablen- 
nes” was intended. 
