G3-i HFLLETIX OF THE UNITED STATE.'^ FISH COMMISSION. 



baiiil nil palatiiK's; )iraiichiostt'i;als 7, the anterior eoncealed; pseu(lol)raiiehiie lartre; jjill-rakers 

 elavate, toothed, sliort, about one-third diameter of pupil, 9 present on liorizontal lind) of anterior 

 aivli; a narrow slit behind fourth f^ill-arc-li; seales on cheeks nio.stly smooth, those on opercles and 

 oeciput strongly ctemiid; interorliital space, snout, mouth parts, and lower side of head largely naked. 



Sjiinous dorsal very low, rounded, the last spine much longer than the ju'eceding spines; first anal 

 si)ine very short, tlie second longer and stronger tlian the third, or than any of the dorsal spines; [lec- 

 torals reaching vertical from third anal spine; all the rays simple in the type, the lower thickened, 

 with projecting tips, the longest rays just below middle of tin; ventral tins extending a little beyond 

 \'ent, which is distant from front of anal slightly more than one-third length of ventrals. 



Scales moderately ctenoid, those on breast, prepectoral area, and abdomen smooth; tubes forming 

 lateral line membranous. 



Col(jr, reddish, with diisky mottlings along back, and lighter or reddish blotches at base of dorsal 

 tin; a l)road light reddish bar on tail; snout and top of head tinely speckled with olive-brown; a black 

 spot between seventh and tenth dorsal spines, and small dark spots at base of some of the spines and 

 rays; two small dark spots dividing base of pectoral fin into thirds; mouth and gill-cavity white. 



The species was taken at stations No. 4077, off the north coast of Maui, 99 to 100 l'ath(jms, and 

 4098, off the north i-oast of Maui, 95 to b")2 fathoms. 



Setarches remig-er (Gilbert & Cramer). 



As in other species of iSiiarchfx, the lateral line is a very Ijroad membranous tulie overlying tlie 

 scales. There are 25 or 26 segments of this tube corresponding to the sensory papilhc. In young 

 specimens all the jiertoral rays are simple, but in adults all are forked except the upper 2 and the 

 lower 5 or H rays. The lower undivided rays are somewhat thickened. 



The following details correct those given in the original description: Snout much longer than 

 diameter of orl)it; two lower preocular spines smaller than the others, but well developed; width of 

 dilated end of maxillary contained 1 s in diameter of orbit; a narrow hand (or a single series) of minute 

 teeth along entire length of pialatines; ventral fins extending Init j distance from their base to vent; 

 caudal lin truncate, with rounded angles; five heavy pyloric c;eca; pseudobranchi;e w ell developed. 



The species was taken at the following stations: Nos. 3865, Pailolo t'hannel, 256 to 283 fathoms; 

 8867, Pailolo Channel, 284 to 290 fathoms; 3883, Pailolo Channel, 277 to 284 fathoms; 3884, Pailolo 

 Channel, 284 to 290 fathoms; 3898, Pailolo Channel, 258 to 284 fathoms; 3899, Pailolo Channel, 283 to 

 284 fathoms; 3925, off the south coast of Oahu, 299 to 323 fathoms; 3942, vicinity of Laysan, 146 to 222 

 fathoms; 3943, vicinity of Laysan, 100 to 222 fathoms; 3947, vicinity of Laysan, 97 to 199 fathoms; 

 4058, off the northeast coast of Hawaii, 190 t(.i 195 fathoms; 4082, off the north c-oast of Maui, 220 to 

 238 fathoms; 4122, off the southwest coast of Oahu, 192 to 352 fatlKjms; 4132, vicinity of Kauai, 257 to 

 312 fathoms. 

 Scurpscna nmiijrra UilliLTt ^.V; Cmmcr. I'roc. V, S. Xat, Mus. .\i.i:. 1S'J7. 418, pi. xi.. 



Plectrogenium, new genus. 



Related to Silnixtiixe/iin.i, but !iuieh more slender, with Iiroad head, the width of which equals the 

 depth, and with dorsal fin divided to base; second anal spine longer an<l stronger than third; pectoral 

 notched, its upper portion consisting of forked rays, the lower unl)ninched, some of them elongate, form- 

 ing a projecting lol)e; scales large and strongly ctenoid, covering head and pectoral fins; no occipital 

 pit; interorbital region flattish; a scries of very strong spines along sides of head. 

 I'lcctroffcniiivi. Gilburt, new gunu.s of :^f(irii:iiii<J:r ( iifuiiuii ). 



Plectrogenium nauum, new species. Fig. 248. 



Tyjie, 70 nun. long, from station 40S2, off north coast of Maui, depth 220 to 238 fathoms; type No. 

 51598, U. S. Nat. Mus. 



Length of head 40 hundredths of total length without caudal; deptli of head at occiput 22; greatest 

 width of head (without spines) 26; diameter of eye 15; width of middle of interorbital space 8; length 

 of snout 10; length fif maxillary 12; greatest depth of body 25; least depth of caudal peduncle 9; length 

 of caudal peduncle from base of last anal ra> 27; longest (fourth) dorsal spine 16; second anal -spine 16; 

 third anal spine 12; longest pectoral ray 25; longest ventral ray 22. D. x-ii, 7; A. in, 5; P. 23. Scales 

 in lateral line 28 or 29, 2.1 series above lateral line, 7 series between lateral line and vent. 



