66 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
sevenths length of longest ray of fin, tip of latter reaching as far posteriorly as tip of the former when 
fin is depressed; origin of adipose dorsal midway between tip of depressed dorsal and base of caudal; 
origin of anal nearer base of caudal than tip of ventral, the greater part of its base anterior to adipose 
dorsal; caudal deeply emarginate, the lobes pointed; pectoral small, falling from origin of dorsal; 
ventrals large, inserted below last third of pectoral and reaching about three-sevenths of the space to 
origin of anal. 
Color in alcohol, dull or muddy brown above, marked with about 6 or more deep-brown saddles 
or broad cross-bands, the spaces between with deep-brown blotches; similar blotches also along the 
side; dorsal, caudal, and pectoral dull brownish, with blackish brown crossbars, the last 3 broad and 
very distinct; lower surface of body dull silvery white, with a very dull yellowish green tint; ventrals 
very light yellowish green. This description from an example 8.5 inches long, from Hilo. 
We have a number of examples from ITilo and Honolulu, many of the small ones deeply colored. 
This species common on sandy shores at moderate depths. 
Saurus gracilis Quoy & Gaimard, Voy. de 1’Uranie, Zool., 224, 1824, Sandwich Islands. 
Saurus ferox Eydoux Souleyet, Voy. Bonite, Poiss., 197, pi. 7, fig. 3, 1841, no locality. 
Saurula nebtdosa Cuvier & Valenciennes, Hist. Nat. Poiss., XXII, 504, pi. 648, 1849, lie de France; Gunther, Cat., V, 399, 
1864 (Madagascar; Amboyna; Sandwich Islands); Streets, Bull. U. S. Nat. Mus., No. 7, 76, 1877 (Honolulu). 
Saurula tumbil, Fowler, Proc. Ac. Nat. Sci. Phila. 1900, 498 (Hawaiian Islands); not of Bloch. 
Saiirida gracilis, Jenkins, Bull. D. S. Fish Comm., XXII, 1902 (Sept. 23, 1903), 433 (Honolulu); Snyder, 1. c. (Jan. 19, 1904), 
521 (Hanalei Bay, Kauai). 
Family XVIII.— AUL0PID£. 
Allied to the Synodontidse, but with the maxillary separate, well developed and dilated behind; 
hypocoracoids extended downward as in many spiny-rayed fishes; gillrakers mostly long and slender, 
needle-shaped; eyes normal, large or small; no luminous spots; jaws without fang-like teeth; dorsal 
fin moderate, nearly median in position; body elongate; pectorals present, normal in form and position; 
adipose fin normally present; pseud obranchife present. This family, as here understood, includes 
some half-dozen species, fishes of moderate depths, chiefly of the Atlantic. Only one species known 
from the Hawaiian Islands. 
Genus 26. CHL0R0PHTHALMUS Bonaparte. 
Head elongate; body subterete, covered with moderate-sized, adherent, pectinate or ctenoid scales, 
which are arranged in straight, parallel, oblique lines; mouth rather large; maxillary well developed, 
dilated behind, reaching to beyond front of orbit; low r er jaw projecting; teeth very small, sharp on 
jaws, vomer, and palatines, usually minute teeth on tongue; eye very large; dorsal short, inserted 
before middle of length of body; adipose fin small; anal short; caudal forked; pectorals and ventrals 
well developed, the ventrals inserted under dorsal and not far behind pectorals, none of the rays form- 
ing exserted filaments; gill-openings wide; branchiostegals 10; pseudobranchiae well developed; gill- 
rakers needle-shaped, rather numerous; color silvery, with darker markings. Deep seas. 
Of 4 known species only one, C. proridens, occurs in Hawaiian waters. (See Section II.) 
Chlorophthalmus Bonaparte, Fauna Italica, fasc. XXVIII, Pesci, 1840 ( agassizii ). 
Hyphalonedrus Goode, Proc. U. S. Nat. Mus., Ill, 1880, 483 ( chalybeius ). 
Family XIX. BATHYPTER0ID£. 
Characters of the family included below in those of its single genus. 
Genus 27. BATHYPTEROIS Gunther. 
Shape of body like that of Aulopus. Head of moderate size, depressed in front, with the snout 
projecting, the large mandible very prominent beyond upper jaw. Cleft of mouth wide; maxillary 
much developed, very movable, much dilated behind. Teeth in narrow villiform bands in the jaws; 
on each side of the broad vomer a small patch of similar teeth; none on palatines or tongue; eye very 
small; scales cycloid, adherent, of moderate size; rays of pectoral much elongate, some of the upper 
being separate from the rest and forming a distinct division; ventrals abdominal, 8-rayed, with the 
