762 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



no conspicuous posterior canines; maxillary not produced backward 

 from angle of mouth; gill -membranes united, free from the isthmus. 

 Dorsal fin long and low, chiefly composed of spines; some of the ante- 

 rior spines often different from the others, longer or shorter, and set 

 farther apart; anal fin low, with 2 spines; ventral fins jugular, of 1 

 spine and 2 or 3 rays; caudal fin truncate; brauchiostegals G; air- 

 bladder and pyloric cceca absent; viviparous. Inhabiting rock-pools 

 among alga3, in warm seas. Our two species are very different, and 

 represent opposite extremes in this large and varied genus, (x/tVoc, a 

 name of some sleepy fish; from x/^, a bed.) 



a. Nape with a fringe of filaments; teeth on vorner and palatines; scales moderate. 

 (Labrosomus* Swaiiisou.) 



1163. C. nuchipinnis Quoy & Gaimard. 



Reddish brown, sometimes with vertical bands ; a black spot on 

 opercle, which is often edged with white; cheeks and fins reticulate or 

 dotted. Body oblong, rather robust; head naked, thick, short, not very 

 obtuse anteriorly, compressed above; mouth rather large, the maxilla- 

 ries not prolonged backward, extending to opposite the posterior part 

 of eye, 2 in head; teeth on jaws, vomer, and palatines; front teeth of 

 jaws conic, strong; eyes large; interorbital space very narrow; each 

 side of neck with a long series of hair-like filaments, nearly as long as 

 eye; orbital tentacle short and broad, multifid; nostrils with a tufted 

 barbel; lower jaw slightly projecting, its posterior teeth sometimes re- 

 curved; pectorals a little shorter than head, reaching vent. Dorsal 

 spines rather slender, the three anterior spines scarcely shorter than 

 the others; all the spines lower than the soft rays; dorsal fin com- 

 mencing near, the nape, the spiuous portion long; soft rays higher 

 than the spines; caudal small; pectorals rather large; ventral* mod- 

 erate; gill-membranes broadly united, free from the i>iliimis; lateral 

 line complete, high anteriorly, then abruptly decurved ; membranes 

 of vertical tins scaly; scales not very small, cycloid. Head :\.\- depth 

 3. D. XVIII, 11'; A. II, 17; Lat. 1. 70. L. 8 inches. AVest Indies; 

 occasional on our South Atlantic coast. 



nii<-liii>iiniin t^iioy A < .:i im:u <1, Vny. Crania Zool. 25. r >: Cllnun pectinifcr Cuv. 

 & Val. \i. :'71: Li/iimnim rirrlnininii Dckay, N. Y. Fauna, Fish. HI*,', -11: Cliinin nuclii- 

 pinniH (JiinlluT, Mi. '.'' '-': / <ibro8omun pectin if er Gill, 1'roc. Acad. Nat. Sci. Phila. 18GO, 

 105.) 



*Swainson, Cl;i^. Fi-li. ii. 7."., 1839: type Clinus pectinifer Cuv. & Val. = C/iM u- 

 chipinnin J. & G. (Labrnx; (Jw/uv, body.) 



