302 MEMOIRS OF THE CARNEGIE MUSEUM. 



eight branchiostegals; opercle with a strong straight spine; head otherwise unarmed. 

 Scales obsolete; five lateral lines. Gill-filaments of first arch much reduced in size 

 and coarseness, those remaining forming a " fluffy " mass. Pseudobranchise 

 present, consisting of two well-developed, free filaments. Four gills, a slit behind 

 fourth. The nearest all}' of Spectrunculus, so far as known to us, is Peno-pus Goode • 

 and Bean. 



The type of Spectrunculus radcliffei is No. 6061, Carnegie Museum, from Misaki 

 (CoU. Owston) sixty-four millimeters in total length. 



Head 5.8 in length to base of caudal, 6.2 in total; depth 4; snout 2.66 (measuring 

 from anterior edge of eyeball); maxillary 2.5; distance from shout to anus 2.4; 

 distance from snout to dorsal insertion 5.25 in body-length; D. 140; A. 110; P. 30; 

 V. 2; C. 9 or 10; branchiostegals 8; giU-rakers short, 2-|-8 (with two or more rudi- 

 ments) . 



Body compressed, its width just posterior to anus, contained 3.25 times in 

 depth at the same place; body-cavity in type greatly distended, with viscera showing 

 plainly through the skin; mouth turned sharply toward vertical, lower jaw strongly 

 projecting; tip of snout at level of eye; a prominent knob-like convexity on its dorsal 

 surface, reaching back to anterior edge of orbit ; diameter of eye-ball half the length 

 of oval orbit; maxillary extending midway between anterior edge of orbit and eye- 

 ball; teeth on lower jaw only anteriorly, very minute, in a single row; a few micro- 

 scopic ones on edge of premaxillary, besides minute serrations; no teeth could be 

 distinguished on the projecting vomer; opercle with a single strong straight spine 

 at upper angle, not extending beyond opercular flap ; giU-openings extending forward 

 below, not attached to isthmus. Gill-filaments on first arch delicate and much 

 reduced, those on remaining arches large and curled, forming a tangled bunch 

 without regular order. 



Scales obsolete; side with five lateral ridges or lateral lines. 



Dorsal inserted over pectoral; dorsal and anal continuous with caudal; pectorals 

 short, rounded, on a base which is slightly pedunculate, or narrowed at its junction 

 with body; ventrals inserted under eye, their length contained 1.5 in head, composed 

 of two rays, fuUy united by membrane. 



Body translucent, flesh-colored, with no pigment save in eye-baU. 



Measurements in hundredths of body-length are as follows: — Head .17; depth 

 .25; snout .05; eye-ball .05; maxillary .065; distance from snout to anus .43; from 

 snout to dorsal insertion, .19. 



This species is named for Mr. Lewis Radcliffe of the U. S. Bureau of Fisheries, 

 in recognition of his work on the Brotulidce. 



