104 DEEP SEA FISHES. 



disk trifid ; those of the tail in six to eight series ; a row of strong ones 

 from the snout to the postfrontal region ; those on the ventral surface 

 and the fins smaller and more uniform ; and those on the orbits very small. 

 Lateral line similar to that of M. sparsa, Plate XVIIL, but with less devel- 

 opment of the fringes between the spines over the papillce ; channels around 

 the edges of the disk deeply excavated ; second papilla at each side of the 

 symphysis of the lower jaws in advance of the space between the first and 

 the third ; thread connecting the ^^apiUs^ distinct as in the Brotuloids and 

 others. Vent halfway from the eye to the base of the caudal. 



Dorsal origin behind the middle of the length from snout to end of 

 the tail, greatest length of fin five sevenths of that of the caudal ; anal 

 origin about the length of its base behind the base of the dorsal; caudal 

 narrow, as long as the skull, subtruncate ; pectorals narrow, fringed, as 

 long as the caudal; ventrals narrow, two thirds as long as the pectorals, 

 fringed. 



Brownish, with traces indicating a rose color in life ; young individuals 

 blackish ; fins blackish. 



Malthopsis spinosa sp. n. 



Plate XXII. 



Br. /. 6 ; D. 6 ; A. 4 ; V. 5 ; P. 13 ; C. 9. 



Nearly allied to Maltkojjsis erinucea, Plate XIX., but less broadly 

 rounded in the anterior half of the disk, with carpalia more completely 

 included in the disk, with much smaller and much more numerous spines, 

 and with less development of the subopercular process. Body and head 

 depres.sed, together foi'ming a slightly oblong disk in which the head is as 

 Ion"- as wide, or seven eighths of the length of head and body, narrower in 

 the anterior half; tail elongate, narrow, rounded, tapering from the vent. 

 The disk extends on the carpals to the bases of the pectoral rays ; edges of 

 the disk not as much swollen as in 31. erinacea ; subopercular angle very 

 blunt, process short. Snout little longer than the lower jaw, length equal 

 to width of interorbital space, or to two fifths of the length of the orbit, 



