JORDAN AND THOMPSON: FISHES OBTAINED IN JAPAN IN 1911. PHA 
Dorsal inserted nearly midway between snout and base of caudal, its base 1.2 
in head, its height (first rays) 1.5, these when depressed just reaching base of last 
ray; anal inserted under last dorsal rays, its base 1.5 in head, its margin nearly 
straight, tips of first rays not reaching base of last; height of first rays 1.66 in head; 
ventrals as long as anal rays, inserted under first dorsal ray; pectorals 1.25 in head. 
Color plain, save for a blue-black lateral stripe along center of caudal peduncle, 
nearly half as wide as pupil, tapering to a point under center of dorsal, its broadest 
part on caudal peduncle, not reaching caudal; a sharply margined blue-black 
shoulder spot as large as pupil; dorsal with two clear stripes half way up the rays, 
alternating dark, the margin being dusky; anal similar; other fins colorless, save the 
dusky caudal; peritoneum black. 
This species is very hard to distinguish superficially from Acheilognathus 
morioke, from which it differs in more oblique mouth, less faleate anal fin, larger 
eye, and less strongly marked coloration. The most striking difference is in the 
plication of the teeth. 
All the males of this species in hand have lesser depth than the females; anal 
black, edged with white, ventrals black, the first two rays white; and the ventral 
surface of the belly black or pigmented. 
Our only specimen from Okayama, a male, has a shorter caudal peduncle and 
smaller eye than any of our examples from Lake Biwa, and is much paler in color. 
One specimen from Nagoya has a similar caudal peduncle, but is in other respects 
similar to specimens from Lake Biwa. 
“Tabira ”’ is a vernacular name for these fishes about Lake Biwa. 
51. Acheilognathus cyanostigma Jordan & Fowler. 
Lake Biwa, at Matsubara, Nos. 6063a—d. 
Acheilognathus cyanostigma Jordan & Fowler, Proc. U. 8. Nat. Mus., XXVI, 1903, p. 820, Fig. 2; Lake 
Biwa, at Matsubara, and Lake Yogo, in Mino.—Tanaka, Ann. Zodél. Jap., VII, Part 1, 1908, p. 3; 
Matsubara, on Lake Biwa. 
The following is a description of the type and cotypes of this species in the 
ichthyological collection of Stanford University, with numerous other specimens 
from Matsubara, Lake Biwa. 
Depth 3.33 in body-length to base of caudal; D. III, 8; A. III, 8 or 9; seales in 
lateral line 38, in transverse series between insertions of vertical fins 6/4; pharyngeal 
teeth 5-5. 
Head 4; snout 3.7 in head; anterior edge of premaxillaries level with lower edge 
of pupil; mouth horizontal; gill-rakers 2+8, longest at angle, short and thick; 
pharyngeal teeth hooked, plicate on lower surfaces, usually a narrow grinding sur- 
