198 
BULLETIN OP THE UNITED STATES FISH COMMISSION. 
out on the caudal, the last scale of lateral line, very large and thin, being the largest scale on the fish; 
4 scales in median line before dorsal; 2 rows of scales on cheek, 5 scales in upper row and 2 to 4 in 
lower, sometimes only 2 on posterior part; 2 rows on opercle, and 1 on lower margin. 
Color in alcohol, grayish leaden brown, lighter below; no markings on fins different from corre- 
sponding parts of body evident. 
The above description is based on the type, No. 50649, U. S. N. M. (field No. 04316), a specimen 
7.75 inches long, from Honolulu; cotype, No. 2735, T7.8. F. C. (field No. 0^354), 7.5 inches long, from 
Honolulu; cotype, No. 7465, L. S. Jr. Univ. Mus. (held No. 650), 5.5 inches long, from Honolulu. 
Family TEUTHIDID7E. The Tangs. 
43. Teuthis atrimentatus Jordan & Evermann, new species. 
Head 3.8 in length; depth 1.9; eye 4.2 in head; snout 1.2; interorbital 3; D. ix, 27; A. in, 25. 
Body deep, compressed, ovoid, the upper profile steeper than lower, evenly convex; jaws low, not 
produced, lower inferior; mouth small, inferior; teeth broad, compressed, edges crenulate; nostrils 
close together, anterior larger, with small fleshy flap; anterior dorsal spines graduated to posterior, the 
longest 1.5 in head; fourth dorsal ray 1.4; third anal spine longest, 1.9; first anal ray 1.5; caudal large, 
emarginate, upper and lower rays produced in sharp angular points, upper much longer than lower; 
pectoral about 3.5 in body; ventrals sharp-pointed, 3.6 in body, spine half the length of fin; caudal 
peduncle compressed, 2 in head; caudal spine large, depressible in a groove, 3.1 in head; scales very 
small, ctenoid, few, and very minute on vertical fins; lateral line high, arched, at first descending 
under fifth dorsal spine, then straight to below middle of soft dorsal, finally falling down and running 
along side of caudal peduncle to tail. 
Color in life (No. 02996), coppery brown, crossed by numerous, very narrow, pale blue lines, those 
above axis of body running somewhat upward and backward, and with short broken lines of same 
interspersed, those below more regular but less distinct; cheek brassy, with about 5 narrow pale blue 
lines from eye to snout; a conspicuous jet-black spot on caudal peduncle at base of last dorsal ray, each 
of these extending slightly upon pale rusty, each with 5 or 6 narrow brassy lines parallel with margin; 
edge of each blackish; last rays of dorsal and anal more brassy; caudal dark, blackest on outer part of 
middle rays; pectoral pale lemon; ventrals dusky, blacker toward tips; iris brownish, white on 
posterior part. Another example (No. 03474) was dull olive-gray, unmarked, save a faint whitish 
band across nape and back part of head; fins plain dusky gray. 
Color in alcohol, very dark chocolate brown; side with about 40 narrow irregular or incomplete 
series of indistinct dark slaty longitudinal lines; cheek with similarly colored lines running obliquely 
downward; fins, except pectoral, all more or less blackish or dusky; dorsal with about 5 blackish 
longitudinal bands; anal with several similar indistinct blackish bands; base and axils of last dorsal 
and anal rays blackish; pectoral brown. 
This common species is well distinguished from Teuthis dussumieri and other streaked species by 
the black ink-like spot in the axil of the dorsal and anal fin. It has several times been recorded 
under the erroneous name of Acanthurus lineolatus, but the species originally called by that name must 
be something else. Numerous specimens were obtained by us at Honolulu, where it was also secured 
by Dr. Jenkins and Dr. Wood. We have examined the following examples: 
Field 
No. 
Length. 
Locality. 
Final disposition of speci- 
men. 
Field 
No. 
Length. 
Locality. 
Final disposition of speci- 
men. 
Inches. 
Inches. 
05481 
9.5 
Honolulu. 
Type, No. 50673, 1T.S. N. M. 
05378 
6.2 
Honolulu. 
Cotype, No. 1501, Cal. Ac.Sci. 
02996 
0.8 
do.... 
Cotype, No. 7482, L. S. Jr. 
C. 1 
do 
Cotype. 
Univ. Mus. 
05491 
5.2 
do 
Cotype. 
03146 
5.7 
do 
Cotype, No. 2731, U. S. F. C. 
05486 
5.75 
do 
Cotype. 
03205 
5. 75 
do.... 
Cotype, No. , M. C. Z. 
05484 
0.7 
do 
Cotvpe. 
03474 
4.5 
do.... 
Cot.ype, No. 2301, Am. Mus. 
05488 
5.5 
do.... 
Cotvpe. 
.8 
do 
Cotype. 
03729 
0.75 
do.... 
Cotype, No. 24229, Ac. Nat. 
Dr.Wood. 
Sci. Phila. 
5.3 
do 
Cotvpe. 
05018 
7 
do.... 
Cotype, No. 3965, Field Col. 
6. 6 
do 
Cotype. 
Mus. 
O.P.J. 
05020 
5.2 
do ... . 
Cotype, No. 9818, Ind. TTniv. 
do 
Cotype. 
Mus. 
141 
4.4 
do 
Cotvpe. 
05305 
5.6 
do.... 
Cotype, No. 1707, Bishop Mus. 
4.6 
do .... 
Cotype. 
Acanthurus lineolatus, Gunther, Fisc.he der Stidsee, I, 112, taf. i.xxnr, fig. A, 1873 (Society Islands); Steindachner, Denks 
Ak. Wiss. Wien, lxx, 1900, 493 (Honolulu); not of Cuvier & Valenciennes. 
