470 REVISION OF HETEROMI—GOODE AND BEAN. vol. xvii. 



of the pectoral to the vent. The width of the interorbital space is about 

 equal to the diameter of the eye, which is ouefifth the length of the 

 head. The length of the snout is about one-fourth that of the head. 

 The postorbital portion of the head is twice as long as the snout. The 

 peculiar form of the jaws and mouth has been described under the head 

 of the genus. The diameter of the circular opening is about one half 

 the diameter of the eye. The dorsal fin begins at a distance from the 

 snout equal to about three times the length of the head. It consists 

 of five graduated spines, of which the first is minute and the longest 

 as long as the snout, and five rays, of which the second is longest, nearly 

 one-half as long as the head. The spines and rays are all compactly 

 arranged in a strong triangular fin. The length of the dorsal base 

 equals one-half that of the head. The anal begins under the fourth 

 s]iine of the dorsal 5 it contains 41 spines and 88 rays, of which the 

 anterior 10 are stiff, though articulated, and divided at the tip. The 

 longest ray is longer than the longest spine, about as long as the snout. 

 The ventral consists of seven spines and seven rays. The- two fins 

 almost meet in the median line, but are disconnected. The fin reaches 

 to the vent. Its distance from the tip of the snout is about 2^ times 

 the length of the head. The pectoral is placed below the median line 

 of the body, at a distance from the head about equal to the diameter 

 of the eye; its length is a little greater than the postorbital part of the 

 head. The lateral line is well developed anteriorly, becoming obsolete 

 at a distance from the end of the dorsal about equal to 2i times the 

 length of the head. 



Tlie color is uniform light brown. The under side of the gill covers 

 dark, showing dark at the edges of the opercular bone. 



The type measures 17 inches in length. It is No. 39212, U.S.N.M., 

 and was taken by the steamer Albatross at station 2742, in !N. lat. 37*^ 

 46' 30": W. Ion. 73° 50' 30", from a depth of 805 fathoms. 



