298 DEEP SEA FISHES. 
dorsal base backward of the latter, longest ray twice the orbital length. 
Ventrals small, shorter than the snout, united by membrane. Pectorals 
small, narrow, acuminate, equal the rostrorbital length of the head, distant 
from the dorsal little more than twice the rostral length. In the tail the 
filamentary portion is not far from one seventh of the total length. 
Seales medium, thin, each concentrically striate in its backward half and 
in its anterior section marked with longitudinal grooves diverging forward ; 
twelve scales above the lateral line and five below it; those of the line wider 
but of the same length as the adjacent scales. 
Branchiostegal membranes, throat, intestines, and linings of body cavity 
black ; sides of head blackish, except mucous canals and luminous organs, 
which are light colored; muscular portions light reddish brown, probably 
more brilliant in life. Air bladder nacreous. Described from an adult 
female. 
Station. Latitude. Longitude. Depth. Temperature. Bottom. 
3413 2° 34’ N. 92° 06’ W.« 1360 fathoms 36° F. Glob. Oz. dk. Sp. 
Halosaurus radiatus sp. n. 
Plate LX. figs. 2, 2a; Plate LXXXIV. figs. 3-6. 
Breer 21-23 3De le Voe Pale: 
Body elongate, compressed, rather stout and broad backed near the head, 
tapering to slender in the caudal region, depth in front of the dorsal fin one 
eleventh of the total length. Head high at the nape, descending and acumi- 
nate forward. Snout moderately produced, preoral about half of the prena- 
rial length, preorbital length twice the length of the orbit, slightly broadened 
or shovel shaped at the end. Mouth small, inferior, half as long as wide, 
length near three fifths of that of the eye. Maxillary with a sharp spine, 
reaching little behind a vertical from the front of the orbit. Teeth very 
small, subconical, hooked, with a slight swelling in the bend near the point, 
strong toward the base, in villiform bands on jaws, palatines, and pterygoids. 
Eye large, hardly more than one sixth of the head, one half as long as the 
snout, equal to the width of the interorbital space. Nostrils close to the 
eye, close together; posterior larger, crescent shaped; anterior with a 
hood-like valve opening forward. Opercles flexible, thin. Branchiostegal 
rays numerous, varying from twenty-one to twenty-three, very slender. Four 
gills; laminze elongate, numerous; rakers short, longest one fourth as long 
