242 MEMOIRS OF THE CARNEGIE MUSEUM. 



midway between tip of snout and eye, closelj^ apposed, anteriorly with slight rim; 

 jaws equal; teeth of moderate size in both jaws, in a single row posteriorly, two 

 rows present anteriorly, the inner some distance behind the outer; vomer with two 

 somewhat large teeth; palatines with single row of small teeth; those in jaws slightly 

 enlarged in outer row, especially anteriorly; gill-rakers short and blunt, about 

 eleven on lower limb of first arch. 



Dorsal inserted above pre-opercular margin and extending to within half an 

 eye-diameter from base of caudal, its longest rays half length of head, but slightly 

 lower in any portion of fin; anal inserted midway between base of caudal and center 

 of ej^e, its longest rays about as long as snout, its base extending as far posteriorly 

 as dorsal; pectoral 1.66 in head; ventrals 1.33 in head, inserted under pectoral 

 base; caudal deeply forked. 



Scales minute, imbedded, not imbricate; lateral line anteriorly sharply arched, 

 apex of curve angular. 



Color in alcohol dark brown; dorsal, anal, and ventral fins darker, nearly 

 black; pectorals colorless; anal dusky, save for tips of lobes, which are clear. 



Although allied to Centrolophus, the color and texture of Edenias shows it to 

 be a shore-fish. 



Family ICOSTEID^. 



117. Icticus ischanus gen. et. sp. nov. (Plate XXVII, fig. 4.) 



Type No. 6036a, from Okinawa. 



The new genus Icticus seems related to Icichthys. 



Body oblong, compressed, the tissues soft; lateral line present; inner ventral 

 ray adnate to belly on either side of groove, which begins at ventrals and ends at 

 the anus; body scaled; scales cycloid, small; teeth in a single series in each jaw, 

 some on vomer and palatines. Fine loose teeth on upper pharyngeals; six branchio- 

 stegals; gill-openings wide, the membranes free from isthmus; four gills, a slit 

 behind the fourth; pseudobranchise large; air-bladder present, small; dorsal long, 

 divided into two separate fins, free from caudal; ventrals below pectoral base; 

 body oblong, compressed; the skeleton soft and flexible, the whole structure soft as 

 in Icosteus and Icichthys. 



The type of Icticus ischanus, described here, is a specimen two hundred and 

 forty-five millimeters in total length, coming from Okinawa, Riu-kiu Islands, 

 No. 6036a Carnegie Museum Cat. of Fishes. 



Head 3.4 in length to base of caudal; depth 4.166; eye 4 in head; maxillary 

 3.33; snout 3; pectoral 1.75; ventral 2.5; D. XII-30; A. 30; P. 19; scales in lateral 

 line 125 (approximate); ten scales between insertion of first dorsal and lateral line. 



