160 DEEP SEA FISHES. 
section, little longer than the eye, rather high and thick, with a median 
ridge and a prominence behind each nostril. Anterior nostril far forward, 
lateral, prominent, with a slight groove to the lip; posterior half way from 
the anterior to the eye. Kye lateral, small, one seventh as long as the 
head, one half as wide as the interorbital space, four fifths as long as 
the snout. Mouth oblique, large; maxillary reaching backward of the 
orbit one diameter of the eye, widened as much at the truncate extremity. 
Suborbital bones inflated over the maxillary. Teeth small, in villiform 
bands on intermaxillaries, mandibles, palatines, and vomer. Vomerine band 
forming an angle with the apex forward and extended down prominently 
from the roof of the mouth. No cranial spines; opercular spines weak and 
flexible, hidden in the skin. No pyloric ceca. Pseudobranchiz very small, 
a pair of pinnules. Gill rakers two plus several rudiments on the upper 
half of the first arch and thirteen or fourteen plus three or four rudi- 
ments on the lower section; longest nearly as long as the eye. Scales 
small, thin, about twenty-seven in a series from the first ray of the anal to 
the dorsal. Ventrals close together, under the humeral symphysis, each 
reduced to a single threadlike segmented ray. Dorsal origin above the 
upper angle of the gill opening; origin of the anal not twice the length of 
the head from the end of the snout. Caudal slender, sharp pointed, nearly 
half as long as the head. Pectoral simple, small, hardly reaching as far 
back as to the vent. 
Head, belly, and linings of mouth, gill chamber and body cavity black ; 
fins light with black margins; muscular portions rusty brownish, no doubt 
darker before loss of scales. It may be that the muscular portions and the 
fins were reddish in life. 
Station. Latitude. Longitude. Depth. Temperature. Bottom. 
3415 14° 46’ N. 98° 40’ W. 1879 fathoms 36° F. Br. M. glob. Oz. 
3381 4° 56’ N. 80° 52’ 30” W. 1772 a 35.8° F. Gn. M. 
3360 6° 17’ N. 82°" (5) Wi. 1672 36.4° F. Fne. bk. dk. gn. 8. 
Diplacanthopoma Jordani sp. n 
Outlines resembling those of D. brachysoma Giinther, with, perhaps, a 
little more elongation in the caudal region. Body compressed, high at 
the nape, tapering regularly to slender at the tail; greatest depth one 
fifth of the entire length. Head massive, one third of the total length, 
three fifths as deep and two fifths as wide as long, convex on the crown. 
