112 DEEP SEA FISHES. 
Red in life somewhat brownish on the back, with an oblong yellow 
(white) edged spot of deep black, covering the second to the sixth rays of 
the first dorsal, in the outer half of the fin. Second dorsal with brown spots 
toward the base on the rays and again toward the extremities, margin light. 
Pectoral dotted with brown. Caudal plain. Lower surfaces uniform light 
(red). On some the spots on the second dorsal are faint or obsolete and 
the back is not so brown. 
Station. Latitude. Longitude. Depth, Temperature. Bottom. 
3387 7° 40’ N. 792 ir! 50" Wi 127 fathoms 56.2° F. Fne. gy. 8. 
3390 io 2EGTOUENE 79° 53’ 50” W. DG. 62.6° F. Fne. gy. 8. G. 
Peristedium crustosum pp. n. 
Plate A, fig. 2. 
Bere; DVI; 17; A. 17=185 V2 65 P. 124-2 Li5.32-381 5 Lin. 
This species resembles P. ¢runcatum Giint. somewhat in form, but is 
possessed of a longer lateral barbel, a longer subopercular spine, wider 
flanges and greater angles on the preopercular ridge, narrower rostral 
prolongations, and shorter second dorsal and anal. As in other species 
the body is massive forward and slender in the entire postabdominal 
section. Head narrower forward, low on the snout, high and abruptly 
prominent in the orbital region, nearly four times as wide across the 
opercular ridges as across the crown, depth half of the length or three 
fifths of the width. Snout broad and low, width at the front of the 
orbits three times, and that at the bases of the rostral prolongations 
twice the width of the interorbital space, length half of that of the head; 
either the length of the rostral processes or their distance apart equals 
the width of the interorbital space. Each rostral process is narrower 
toward its outer end, has four sensory membranes (lat. syst.) toward 
the outer edges of the lower sides, is denticulate on the edges, and has 
three or four stronger denticles in front of the end.  Nostrils small, 
subtubular, apparently of much less importance in the system than the 
greatly developed sensory membranes in the openings of the lateral system 
or than the barbels of the chin. Immediately behind the superior processes 
of the upper jaws there is a transverse series of four papillz and at each 
side of the same processes there are two more. Mouth wide; maxillary not 
reaching a vertical from the front of the orbit by about one third of the 
orbital length; lower jaws shorter. Chin with numerous barbels, separated 
i i 
