1894 Bulletin 4.7, United States National Museum. 



markings ; soft dorsal translucent, with broad oblique dusky bars ; caudal 

 with the dusky basal bar continued on upper and lower rays at base, the 

 basal half of fin translucent, its terminal portion with 2 or 3 blackish 

 crossbars; anal black-edged in males; ventral black in males; base and 

 lower half of pectorals largely black in males, the terminal portion with 

 pearly and dusky bars; branchiostegal membranes black in males; a 

 broad black bar below eye. Length 5 inches. Coast of southern Cali- 

 fornia, in rather deep water. (Gilbert.) (tennis, slender.) 



Icelinus tennis, GILBERT, Proc. U. S. Nat. Mus. 1890, 86, off Santa Barbara Islands, at Alba- 

 tross Stations 2893, 2946, 2959, 2977, and 2983, in 45 to 150 fathoms. (Type, No. 43086. 

 Coll. Gilbert.) 



709. ICELINUS, Jordan. 



Icelinus, JORDAN, Cat. Fishes IS. A., 110, 1885 (quadriseriat us) . ' 



Body slender, little compressed ; upper preopercular spine long, with 2 

 to 5 hooked processes above ; a well developed series of spinous scales or 

 plates along the back, these meeting behind dorsal ; another series along 

 lateral line ; no plates behind the axil. Three or 4 preopercular spines. 

 No slit behind last gill ; gill membranes broadly united, free from the 

 isthmus. Teeth on vomer and palatines; spinous dorsal short, without 

 notch or filaments; ventral fins small, I, 3. Deep waters off the coast of 

 California. Size small. (Name a diminutive from Icelu8,"lKeA.o$, a god of 

 sleep, from the quiescent habit of these Northern fishes.) 



a. Nasal tentacle broad and palmate, with narrow stem-like base ; nasal, 2 postocnlar 

 and occipital spine present; interocular space about & pupil; supraocular fila- 

 ment usually fimbriate. Head 2J in length. FIMBRIATUS, 2275. 

 aa. Nasal tentacle simple, slender. Eye very large ; interocular space very narrow, 

 about J pupil; maxillary reaching posterior border of pupil; no postocular or 

 occipital spines. 



6. Preopercular spine moderate, shorter than eye; head 2 in length; eye large, 

 3f in head. OCULATUS, 2276. 



bb. Preopercular spine large, as long as eye ; head 2| in length ; eye small, 4 in 

 head. 



BOBEALIS, 2277. 

 aaa. Nasal tentacle obsolete. 



c. Head small, J length; interocular space 2 in pupil; dorsal series of plates 

 usually interrupted under posterior rays of soft dorsal, then continued 

 on back of caudal peduncle ; no postocular spine ; nasal and occipital spines 

 present. QUADRISERIATUS, 2278. 



cc. Head larger, 2| in length; dorsal series of plates continuous, the series 

 double, except for last 5 or 6 scales ; a short dermal flap behind eye. 



STRABO, 2279. 



2275. ICELINUS FIMBRIATUS, Gilbert. 



Head 21 to 2f ; depth 4|; eye 3f to 4* in head. D. X, 15 or 16; A. 12. 



Shape much as in Icelinus quadriseriatus. Depth of caudal peduncle 



f orbit. Mouth larger, the maxillary reaching beyond middle of pupil, 



2| to 2-J- in head; teeth as usual; nasal spines strong; interorbital 



space narrow, grooved, length of pupil; preopercular spine very 



