FISHES OF HAWAIIAN ISLANDS. 
523 
438. Antennarius nexilis Snyder. Plate 65, fig. 1. 
“Bait” short, equal in length to longitudinal diameter of eye, the fleshy tentacle half as long as 
the rod, with 7 filaments. First spine curved backward, its length equal to 1.5 times the longitudinal 
diameter of eye; when depressed, the tip not reaching over half way between its base and the base of 
second spine, no membrane connecting posterior part of spine with the head; second dorsal spine equal 
in length to distance between its base and tip of snout, very closely bound down throughout its length 
to the back, the tip with a movable joint; soft dorsal with 12 rays, the middle ones equal in height 
to distance between tip of snout and base of third spine; fin extending posteriorly to bases of caudal 
rays; anal rays 7, equal in length to the dorsal rays; edge of fin rounded, extending posteriorly as 
far as the dorsal; caudal rounded posteriorly, 3.5 in the length; pectoral rays 12. 
Body and fins covered with granules and prickles, the latter usually bifid or trifid, many of them 
having fleshy tentacles; a lateral line of pores begins on snout, passes over eye, curves downward to 
a level with low y er margin of eye, extends backward to a point below base of second or third dorsal 
ray, then bends downward and backward to a point above the origin of anal, from which it runs 
backward to lower edge of base of caudal; another line of conspicuous pores extends from the chin 
downward, curving far below the mouth, then upward, joining the lateral line behind the eye; other 
large pores are present on the chin and head. 
Color gray, w r ith duksy spots and clouds, large and close together on the dorsal parts of body; eye 
with radiating dark and light elongate spots; a large, irregular, reddish orange spot on the nape; a few 
small spots of same color on snout and face; fins closely covered with black spots a little larger than 
the pupil, the membranes of the fins near their edges w 1 1 i te ; pectorals and ventrals white and almost 
without spots on ventral sides; inside of mouth without dark color. 
The description is from the type, No. 50883, U. S. Nat. Mus., taken at Honolulu. In another 
example, cotype, 7735, Stanford Univ. Mus., the upper parts of the head and body are almost covered 
with reddish clouds, the tint more intense anteriorly. First spine 1.33 times as long as diameter of eye. 
Antennarius nexilis Snyder, Bull. U. S. Fish Comm., XXII, 1902 (Jan. 19, 1904), 537, pi. 13, fig. 23, Honolulu. 
Genus 266. CHAUNAX Lowe. 
Head very large, depressed cuboid; mouth large, subvertical, jaws and palate with bands of small 
teeth; skin with small, sharp spines; spinous dorsal reduced to a small tentacle above the snout, 
retractile into a groove; soft dorsal moderate, low; anal short; ventrals small; gills 2£; no pseudo- 
branchiie; muciferous channels very conspicuous; lateral line prominent, undulate; another series of 
mucuous tubes extending from lower jaws to axil, and still another backward from snout and maxillary 
to a point behind eye, where it ceases, uniting with a vertical line which extends from the lateral line 
to the' lower line; these lines thus inclose a quadrate area on the cheek; gill-openings small, well 
behind pectoral under front of soft dorsal. 
The single Hawaiian species of this genus is fully described in Section II. 
Chaunax Lowe, Trans. Zool. Soc. Lond., Ill, 1846, 339 (pictus). 
Family CV1II. CERATIID^.— The Sea- Devils. 
Head and body compressed; mouth terminal, more or less oblique; gill-openings small, in the 
lower part of the axils; no pseudobranchise; spinous dorsal represented by one or more tentacles; 
pectoral members not genieulated, with short pseudobrachia and 3 aetinosts; no ventral fins; fishes 
of the open seas, usually inhabiting considerable depths; uniform blackish in color. 
The single Hawaiian genus and species of this family are fully described in Section II. 
Family C1X. OGCOCEPHALID^.— The Bat-Fishes. 
Head very broad and depressed, the snout more or less elevated, the trunk short and slender. 
Mouth not large, subterminal or inferior, the lower jaw included; teeth villiform or cardiform. Gill- 
openings very small, above and behind the axils of the pectoral fins. Body and head covered with 
bony tubercles or spines. Spinous dorsal reduced to a small rostral tentacle, which is retractile into a 
cavity under a prominent process on the forehead; in one genus the rostral tentacle is obsolete; soft 
