114. BLENNIlDzE ISESTHES. 757 



these somewhat irregular and interrupted, converging backwards; op- 

 ercular membrane and a broad stripe through middle of spinons dorsal 

 deep orange-yellow; anal fin dark, the rays with white mernbrauaceous 

 tips; ? dark olive green, reticulated with narrow pale green lines, and 

 with several broad dark bars, which are more distinct posteriorly; ver- 

 tical fins similarly marked ; head finely dotted with black; a dusky spot 

 at base of caudal in both sexes. Orbital tentacle very minute or want- 

 ing; maxillary extending to rather beyond eye; iuterocular space very 

 narrow, not concave. Dorsal fin not eniarginate, the spines slender. 

 Dorsal joined to base of caudal; anal free. Head 3; depth 3J. D. 

 XI, 19 ; A. 20. ISTew York to Florida ; chiefly southward. 



(Blennim bosqnianus Lac. Hist. Nat. Poiss. ii, 493, 1800 ( 9 ); Giintker, iii, 229: Pholis 

 novemlineatns Wood, Joimi. Acatl. Nat. Sci. Phila. iv, 280, 1824 ( $ ) : Chasmodes novcm- 

 lineatus Giiuther, iii, 229.) 



1154. C. quadrifasciatus (Wood) C. & V. 



Body with 4 distinct brownish bauds, a fifth broader and less marked 

 on the neck; four round yellowish spots along base of anal; head 

 spotted with blackish. Lower jaw slightly longer than the upper. 

 Dorsal fin free from the caudal; anal fin highest anteriorly. D. 27; A. 

 15. ( Wood.) Habitat uncertain, probably South Atlantic coast of the 

 United States. 



(Pliolis quadrifasciatus Wood, Journ. Acad. Nat. Sci. Phila. iv, 282, 1824; Giinther, 

 iii, 229.) 



4O3. ISESTHES Jordan & Gilbert. 



(Gen. uov. : type Blennius flcnUUs Girard.) 



This genus differs from Blennius in the absence of canine teeth and 

 in the restriction of the gill-openings to the sides, the gill-membranes 

 being fully united to the isthmus as far as the base of the pectorals. 

 The known species are American. (tV<^, equal; <rtf:'o>, to eat; in allu- 

 sion to the uniformity of the teeth.) (See Addenda.) 



1155. I. gentilis (Grd.) J. & G. 



Olivaceous, body and fins marbled and spotted with darker; anal 

 pale-edged; a blue spot on the dorsal in front; males with golden 

 stripes on lower parts of head. Gill-openings extending downward to 

 lower edge of pectorals. Head large, short and blunt, the profile of 

 snout steep; supraorbital cirrus large, multifid, as high as eye; inter- 

 orbital space convex, less than half width of orbit; no canines. Dorsal 

 fin not eniarginate, free from caudal, its spines stiff, lower than soft 

 rays, 2 in head; pectorals reaching anal; ventrals half way to vent; 



