304 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



bifid, tentacles at occipital reoion; a small .simple tentacle sometimes 

 presented at end of maxillary. 



Lateral line forming- a doul)le curve anteriorly; each anterior pore 

 usually with a simple tentacle. Sides under anterior part of lateral 

 line with a few scattered rough plates; body otherwise naked. 



Pectoral with 15 rays, the lower 8 swollen, the upper of which is 

 the longest, reaching- beyond the rays just alcove it and to above base 

 of fourth or fifth anal ray; it is as long or sometimes exceeds the 

 length of head. Bases of first and second dorsal spines in contact; 

 third spine sometimes a little shorter than the first and fourth, making 

 a shallow notch in upper outline of tin; the notch never so deep as in 

 F. rmmfie; usually third spine is as long or sometimes longer than 

 first; first spine 2^ to 2f in head; last spine as long as eye, and con- 

 nected to soft dorsal for nearly its whole length. Soft dorsal higher 

 than spinous, its longest rays If to 2^ in head; posterior ray adnate 



Fig. 32.— Px'rcisa ishikaw.i:. 



to caudal peduncle; tips of last I'ays reach l)e3"ond those of anal to 

 above base of caudal rays. Anal lower than soft dorsal, its longest 

 raj^s 2^ to 2 1 in head. Ventrals with a concealed spine and two soft 

 rays each; the inner ray the longer, 3 in head. When the caudal is 

 closed its posterior outline is ver^^ slightly concave; when spread it is 

 truncate or feebly convex; its length li in head. 



Color brownish above; white on belly and under parts; back with 4 

 cross bars; the iirst under middle of spinous dorsal extending forward 

 to base of pectoral; the second under front of soft dorsal; the third 

 under middle of soft dorsal, and the fourth under third and fourth 

 rays from end of soft dorsal; below are a series of connected, inverted 

 U-shaped marks, reaching above lateral line behind its curve, and con- 

 nected more or less with cross bars on back; between these are smaller 

 irregular spots mottling the sides; indefinite bars radiating from e3'e; 

 a small dark spot on end of maxillary; a dark l)ar on base of middle 



