PSEUDONUS ACUTUS. 169 
Plate XXXIX., figs. 3-6. The anal aperture is immediately in front of the 
cage. The papilla when at rest is directed upward against the body. When 
the cage is bent downward the papilla is directed horizontally backward, or 
possibly downward when in function, Dorsal origin near midway from base 
of pectoral to vent; anal origin below the twenty-fifth ray of the dorsal. 
Pectorals short, two fifths as long as the head, bases deep. Ventrals close 
-together, little backward of the humeral symphysis, of a single filamentary 
ray, as long as the pectoral. Vertical fins confluent ; caudal narrow, median 
rays longer, one third as long as the head or longer. Pyloric appendages 
two, comparatively short and thick Mucous cavities and pores large. 
Scales absent from head on the top, snout and below, present on the sides. 
Lateral line distinct, parallel with the dorsal to a point below the fifteenth 
ray or thereabout, thence descending to the middle of the flank to continue 
to the tail. The viscera are figured on Plate XX XIX. (fig. 3). 
Brownish, uniform or tinted with olivaceous or reddish. 
Nineteen inches in total length. 
Station. Latitude. ; Longitude, Depth. Temperature. Bottom. 
3361 6° 10’ N. S3oeG Wis 1471 tathoms 36.6° F. Gn. Oz. 
3392 TOMS S30! NE 79° 40’ W. 1270 G3 36.4° F. Hard. 
3400 0° 36’ S. 86° 46! W. 1322. 36° F. Lt gy. glob. Oz. 
PSEUDONUS gen. n. 
Shape in a measure resembling that of Porogadus ; body compressed and 
tapering; body cavity about half of the total length. Head medium, like 
that of Mixonus in some respects, but more elongate. Mouth wide, upper 
jaw projecting very little. Teeth in villiform bands on jaws, vomer and 
palatines. Eight branchiostegal rays. Gill openings wide; membranes 
hardly united, free from the isthmus. No pseudobranchix. No barbels. 
No ventrals. Vertical fins united. An opercular spine. Channels of the 
lateral canal system greatly developed on the head. 
Pseudonus acutus sp. n. 
Plate XX XTX. fig. 1. 
Be nce D109. AL Sl V 0; P. 21; C. 10% LL 77 sylutrs 275, D.to 
Asi Q. 
Moderately compressed ; depth near one seventh of the total length, 
body chamber not far from one half. Head elongate, about as wide as deep, 
