'"L-go!" ] PROCEEDINGS OF THE NATIONAL MUSEUM. 119 



series of spines, less marked in females. Anterior rim of upper orbit 

 similarly, but less strongly, marked. A strong double spine on 

 maxillary, in front of nostrils. A spine near end of maxillary in 

 males. 



Mouth small, maxillaiy not reaching front of pupil, equaling diame- 

 ter of orbit. Teeth small, in a single close-set series in each jaw, equally 

 developed on both sides, with enlarged canines. 



Gill-rakers very short and weak, eight on horizontal limb. 



Anterior nostrils with very short flaps. 



Dorsal beginning above front of lower eye. In all spec mens, females 

 as well as males, the first two rays are detached from the rest of fin, 

 the second ray produced into a flat ribbon-shaped filament about as 

 long as head. Dorsal and anal rays all unbranched. Median caudal 

 rays forked. No anal spine. 



Ventral of colored side on ridge of abdomen, the two anterior rays in 

 males connected by membrane at base only, produced into flat fila- 

 ujents as long as head, extending far beyond front of anal. 



Pectoral of left side well developed, but small, slightly \uore than 

 half head; that of blind side little developed, about half diameter of 

 orbit. 



Scales of left side strongly ctenoid, absent on interorbital space, snout, 

 maxillary and mandible; lateral line with strong curve anteriorly, the 

 chord of which is contained five times in straight portion. Along lat- 

 eral line are occasional broad cutaneous flai)s. colored blue in life. 

 Scales of blind side cycloid, the tubes of lateral line obsolete, the course 

 of lateral line indistinctly indicated by pits at bases of scales, and oc- 

 casional pore-like markings. Median rays of dorsal and anal on left 

 side with series of ctenoid scales, otherwise scaleless. Caudal rays 

 with double series on both sides. 



Head 3| ; depth 2^. Lat. 1. 60-65, the arch with fifteen pores. D. 

 86-8S; A. 67-70. Twenty scales in a series running upwards and back- 

 wards from lateral line. L. 3^ inches in longest specimen. 



Color: (Jn left side olive-brown, with manj' small irregular spots of 

 light gray, with darker borders. Three or four dark blotches along 

 lateral hue. Along dorsal and ventral outlines are about five ])airs of 

 light spots, broadly ocellated with blackish. Males with a bright bine 

 spot on anterior profile, at base of each of first ten or twelve dorsal 

 rays, and one on end of snouL 



Blind side in males with a broad oblique bar covering about one- 

 fourth of sides, bluish-black in life, dark brown in spirits. From its 

 upper anterior part a number of narrow parallel streaks run forwards 

 towards head, much as in Engyophrys sanctilaurentii. Filamentons 

 rays of dorsal and ventral white. Fins all speckled; a small black 

 spot at base of median caudal rays. 



Several specimens from Station 2998, in 40 fathoms. 



