114. BLENNID^. 755 



TO. Dorsal fin of spines only. 

 n. Lateral line none. 

 0. Gill-membranes free from tlic ist hnuis ; no pyloric ccBca. 

 p. Anal spine none; A-entrals I, ',i; top of head with. 



tentacles Chiuolophus, 410. 



pj). Anal fin "with 2 small spines; ventral fins rudi- 

 mentary Mt'RylCXOinES, 411. 



pjJ]). Anal fin with a large spine in a islu^afh; ventrals 



wanting Apodiciitiiys, 412. 



00. Gill-membranes joined to the isthmus; no ventral 

 fins; no anal spines; pyloric cceca. 



AXOPLAUCIIUS, 413. 

 nn. Lateral lines several : pyloric cccca present ; gill- 

 membranes free from isthmus; ventrals 

 none; anal spines small. 



XlPIIISTEPv, 414. 



mm. Dorsal fin with its posterior half composed of soft rays ; 



gill-membranes broadly united, free from 



isthmus; ventrals wanting; lateral line 



single, high; jiyloric ca?ca present 



Cebedichthys, 415. 

 II. Gill-openings prolonged forward below, separated by a nar- 

 row isthmus ; pectorals nearly as long as 

 head ; ventrals well develoiied. Ovipa- 

 rous, herbivorous. Arctic. {Stich(eince.) 

 q. Lateral line present. 

 r. Lateral line forked or duplicated. 



^ EUMESOGRAMMUS, 416. 



rr. Lateral line simple, median. ..Stich^eus, 417. 

 ?7T. Lateral line simple, dorsal. 



NOTOGRAMMUS, 418. 

 qq. Lateral line obsolete. 



s. Teeth on vomer or palatines -Lumpexus, 419. 



8S. Teeth on jaws only Leptoblexxius, 420. 



kk. Mouth nearlj^ vertical ; gill-membranes attached to the isth- 

 mus; scales small; lateral line obsolete; 

 no ventrals; dorsal of spines only. (Cryp- 



tacanthodincs) Delolepis, 421. 



ff. Body naked; dorsal fins of spines only; ventrals obsolete. 



t. Gill-membranes joined to the isthmus; lat- 

 eral line obsolete ; pyloric cceca present ; 

 mouth nearly vertical; teeth strong, on 

 jaws, vomer, and palatines. 



Cryptacaxtiiodes, 422. 

 aa. Molar teeth strong, on vomer, palatines, and sides of lower jaw; dorsal of flex- 

 ible spines only; scales minute; gill-mem- 

 branes joined to the isthmus; no ventral 

 fins; air-bladder present; no lateral line. 

 {Anarrliichadince. ) 

 M. Caudal fiu distinct ; body moderately 



elongate Axarrhiciias, 423. 



u\t. Caudal fin confluent with dorsal and 

 anal; body eel-shaped. 



Anarrhichtiiys, 424. 



