58 BULLETIN OF THE BUREAU OF FISHERIES. 



Myoxocephalus batrachoides, new species. (Fig. ii.) 



Type 66 cm. long, from station 4798, latitude 51° 37' N., longitude 156° 21' E.; on the codfish 

 banks west of southern part of Kamchatka; depth, 25 fathoms. 



Measurements in hundredths of length to base of caudal: Head 41; depth 17; least depth caudal 

 peduncle 6; snout 11. 5; longitudinal diameter orbit 7; exposed part of eye 4.5; maxillar>^ 22; inter- 

 orbital width 6.7; distance between occipital tubercles 6; width of head 32; length of upper preo- 

 percular spine 4; highest dorsal spine 11; distance between dorsals 3; longest dorsal ray 17; longest 

 anal ray 14; length of caudal 18; ventrals 16; pectorals 24. 



Dorsal x-15; anal 12; pectoral 18; lateral line 41. 



Head and body greatly depressed, the head broad, the interorbital space wide, shallowly concave, 

 ■with a very low median ridge anteriorly; maxillary reaching vertical from posterior border of exposed 

 part of eye; teeth small, in moderate bands on jaws and vomer; nasal spines short, concealed; posterior 

 nostril in a short papilla-like tube, the anterior tube thinner and slightly higher; no filaments on head 

 or body; a strong supraorbital tubercle; occipital ridges low, converging in a curve, terminating poste- 

 riorly in an inconspicuous narrow ridge which does not bear a spine ; preopercular spines very short, 

 the upper directed slightly upward, not nearly reaching opercular margin; second spine about one- 

 half length of upper, the third a low concealed tubercle, the fourth directed downward and forward as 



y J ^"Z 



Fig. II. — Myoxcephalus batrackoideSt new spedcs. Type. 



usual; pcJBttemporal spine strong; opercular spine well developed; a short strong spine on lower angle 

 of subopercle, directed downward and backward; top of head, nape, snout, cheeks, and upper part of 

 opercles with numerous wart-like projections, in which are usually found minute pores of the sensory 

 system of canals; the warts on occiput, nape, and parietal region are the largest; a similar series of 

 warts on sides of trunk, most numerous under second dorsal. 



First 4 dorsal spines of nearly equal height, the fin thence rapidly lowering, the last spine short, 

 about one-seventh the length of the first spine; when the fin is depressed, none of the preceding spines 

 reach the tip of the last spine; dorsals well separated, the distance from tip of last spine to base of first 

 ray equaling nearly twice the length of the last ray. Lateral line with a series of concealed plates, 

 opening by a small pore above and below each plate. No spinous plates on body, but a number of 

 scattered long, narrow, spine-like scales concealed in the skin. 



Color brownish above, mottled with light olive, traces of a dark bar under spinous dorsal, two under 

 soft dorsal, and one at base of tail; under parts white; a number of white round spots as large as pupil 

 on sides behind base of pectorals, tliose forward near the axillary region smaller; spinous dorsal with 

 two very irregular dark bars; soft dorsal with four broad oblique bars alternating with narrower white bars, 

 trace of a small fifth bar at base of anterior rays; caudal witli a very conspicuous broad d;irk bar on 

 distal half with a narrower white bar behind it, the basal half of fin largely white, with an incomplete 

 dark bar across it; pectoral black above, axil white, two irregular series of round white spots on the 

 rays forming bars, and a submarginal series of even more irregular white blotches; lower pectoral rays 



