244 DEEP SEA FISHES. 
LYCHNOPOLES gen. n. 
Elongate and slender in form, with body and head much compressed, and 
with the body cavity occupying half or more of the entire length. Body 
covered by large thin scales; head naked. Mouth wide, oblique ; inter- 
maxillary forming half or more of the dentigerous portion of the upper 
jaws. Teeth small, unequal, acicular, in a single series on each jaw, a row 
of six or eight on each palatine, in a villiform patch of very small ones on 
the vomer at each side of which there is a small conical tooth. Eyes large, 
lateral. Gill openings very wide, extending forward to below the nostrils; 
gill rakers numerous, of moderate length, slender. No pseudobranchiz. 
Branchiostegal rays fourteen. No barbel. No air bladder. Stomach long, 
cecal. Dorsal short, origin near the middle of the total length, slightly 
forward of that of the anal. Anallong. Caudal forked. Ventrals abdominal. 
A spine-like prominence below the scapulary symphysis. A large luminous | 
disk between each eye and the intermaxillary, two smaller ones behind ~ 
the end of the maxillary—one behind the other, one below each side of the 
chin, a series of eleven on each branchiostegal membrane—between the 
basal portions of the rays, a series of nine at each side of the isthmus, and 
four series of about forty-four glands each on each side of the lower portion 
of the body. 
Distinguished from Gonostoma to which this genus is closely allied by a 
larger intermaxillary, by the small teeth, by a greater number of series of 
luminous glands, and by the positions of dorsal and ventrals. 
to) 3 
Lychnopoles argenteolus sp. n. 
Plate LI. fig. 4, 4a. 
Bror. 14; D: 14-16; As26—29; V. 7; P. 95 Ll. 49 ca.3 Ltr: 85) Vert. 
20 + 25. 
Moderately elongate, slender, much compressed, depth one seventh and 
length of body cavity one half of the total length. Head narrow, nearly 
one fifth of the entire length, forehead flattened, cheeks vertical, chin 
prominent and pointed. Snout medium, one and one half times as long as 
the eye, sharp at the symphysis of the lower jaws. Eye rather large, one 
fifth as long as the head, two thirds of the length of the snout, four fifths 
