FISHES. 205 



66. No teeth on the vomer ; anal spines 1 or 3 ; lateral 

 line usually running up on the caudal fln. 



SciiBNID^, 94. 



aa. Edges of opercular bones entire. 

 /. Scales well developed, not enlarged along lateral line ; 

 chin often with barbels ; no free spines. 



Seicmidm, the Maigres. 



ff. Scales minute ; no barbels. 



g. Body more or less compressed and elevated ; scales 



sometimes enlarged along lateral line ; usually 



3 free anal spines. Ga/rcmgidm, the Pilot Fishes. 



gg. Body long and low; no free spines nor lateral 



shields Gobiidm, the Gobies. 



f f Body entirely scaleless. 

 h. Body more or less depressed ; eyes high up on the broad 

 head ; caudal usually rounded. 

 i. Dorsal with 4 spines ; ventrals jugulau I, 5 ; mouth 

 vertical. . . TTranoscopicUB, the 8ta/r Gazers, 

 ii. Dorsal with 3 spines ; ventrals jugular I, 2 ; mouth 

 broad, with conical teeth. 



Batraehidm, the Toad Fishes. 

 Hi. Dorsal spines 6 or more ; ventrals thoracic ; cheeks 

 mailed {i. e., the sub -orbital bone extending back- 

 ward over the cheek, articulating with the pre 

 opercle). 



— Spinous" dorsal shortest, its middle rays highest 



head without barbels. . . CoTTJtDiE, 95. 



— Spinous dorsal longest, notched, its first rays highest 



head with many fleshy slips. 



HemiPriptendcB, the Sea Ba/oens. 



hh. Body greatly compressed ; the eyes lateral or anterior ; 

 fins often filamentous ; tail usually slender, the caudal 

 fin widely forked. 



j. A. series of bony shields along base of second dorsal. 



ZenidcB, the John Dories. 



jj. No bony shields ; usually two free anal spines. 



Caromgidci, the Pilot Fishes 



