392 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Acanthurus lineulatus Cuvier & Valenciennes, Hist. Nat. Poiss., X, 207, 1835, Pacific. 
’Acvominis argenteus, Gunther, Cat., Ill, 316, 1861 (Ascension Island); probably not ol Quoy & Gaimard. 
Teuthis argenteus, Jordan & Fowler, Prop. U. S. Nat. Mus., XXV, 1903, 553 (Umesawa and Misaki, Japan); Snyder, Bull. 
U. S. Fish. Comm., XXII, 1902 (Jan. 19, 1904), 533 (Honolulu). 
Teuthis dussumieri, Jenkins, Bull. U. S. Fish Comm., XXII, 1902 (Sept. 23, 1903), 477 (Honolulu). 
319. Hepatus guttatus (Bloch & Schneider). Fig. 170. 
Head 3.6 in length; depth 1.4; eye 4.5 in head; snout 1.2; interorbital 2.25; D. vm, 27; A. iii, 24. 
Body deep, compressed; back elevated, high at spinous dorsal; abdomen and lower part of trunk 
expanded below, lowest point at origin of anal; head deep, rather small, compressed, upper profile 
oblique from tip of snout to origin of dorsal; profile of snout nearly straight, jaws large, blunt, 
slightly produced; mouth low, inferior; mandible inferior, lips rather broad and thin; teeth broad, 
Fig. 170 . — Hepatus guttatus (Bloch & Schneider); after Gunther. 
compressed, forming sharp cutting edge, each one with 7 crenulations, the 3 median large, their edges 
level; nostrils large, close together, anterior larger, with small, fleshy flap; interorbital space broad, 
convex, not much elevated; dorsal spines graduated to posterior, stiff, last 1.5 in head; anterior 
dorsal rays longest, others gradually decreasing to last, first 1.5, last 4; fifth anal ray 6.5 in head, 
last 4.75; caudal broad, margin straight when expanded; caudal peduncle deep, compressed, depth 
2 in head; pectoral pointed, 3 in body; ventral 4.25; caudal spine small, short, depressible in a 
groove, 1.35 in eye; scales small, ctenoid, deeply imbricated on sides, scales on vertical fins very 
small; lateral line arched, nearly concurrent with profile of back; anus directly behind bases of ven- 
trals, well before anal spines. 
Color in alcohol, uniform brown on greater portion, chest and belly somewhat pale; a pale brown 
band from before spinous dorsal dowm behind eye, another narrow pale band from base of fourth 
dorsal spine to bell}', and last indistinct from fourth dorsal ray down to third anal ray; basal portion 
