144 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



each ray bearing- the free membrane only on its lower edge; the mem- 

 brane between the other rays is notched, each ru}^ bearing an equal 

 share of the free membrane. Dorsal spines of males longer than those 

 of females, and the membrane growing gradualh^ less to tip of spine; 

 in females the membrane is wider and is of same width nearly to tip 

 of spine; fifth, sixth, seventh, and eighth spines subequal; the second, 

 third, and fourth growing slightly and graduall}" shorter anteriorly; 

 the first abruptly shorter, three-fifths the length of fifth; the ninth, 

 tenth, and eleventh growing gradually shorter; the twelfth and thir- 

 teenth abruptly shorter, the former 2i times in fifth. Ventrals reach- 

 ing to front of anal. Caudal rounded, as long as head. Peritoneum 

 white. 



Color in spirits: Body crossed with many dark brown or blackish 

 narrow bars across light ground. Intororbital space with a dark lon- 

 gitudinal stripe running from behind eye to premaxillary processes, 

 where it meets a V-shaped mark; a band from supraorbital rim to 

 anterior preorbital barbel; two or three short ones before it; a band 

 crossing iris and running downward from ej^e; three narrower ones in 

 front of it radiating from eye; a band across occipital region just 

 behind eye, continuous with its fellow of the opposite side, running 

 obliquely backward across preopercular spines to edge of opercle; a 

 narrower one in front of it; a band across parietal ridges running 

 obliquely backward to edge of opercle to above base of upper pectoral 

 ray; one or two shorter ones in front of it and three behind; a wide 

 band from second dorsal spine crossing a conspicuous dark spot behind 

 opercular flap and extending on axil; parallel to the last is a narrower 

 band from third spine crossing body; a shorter, still narrower streak 

 just in front of it; a wide band from fourth dorsal spine running down- 

 ward and back parallel to the last and meeting a similar band from 

 sixth spine running straight downward at a point some distance below 

 lateral line, inclosing a short streak from fifth spine which stops at 

 lateral line; behind this bands are parallel and run straight downward; 

 a moderately wide one from eighth spine; a wider one from tenth; 

 three narrow ones from eleventh, twelfth, and thirteenth spines, the 

 middle one the widest; a wide one from second ray; a narrower one 

 from fourth; a wide one from seventh, and a very narrow one under 

 last ray. All of these bars involve membrane of spinous dorsal or 

 base of soft dorsal. Two stripes across caudal peduncle and one at 

 base of caudal rays. Each dorsal spine with three or four large dark 

 spots having an interval between each equal in width to the spots. 

 Each ray of pectoral crossed with several large spots equal in width to 

 interval between; their edges soft and blended; on the membrane at 

 each side they run obliquel}" backward. Rays of ventrals crossed by 

 four or five distinct but irregular dark bars, which usually cross the 

 membrane, but sometimes are broken between each ray. Small exam- 

 ples with distinct small black spots on dorsal, anal, and caudal, which 



