220 MEMOIRS OF THE CARNEGIE MUSEUM. 
with a narrow margin of intense blue-black; anal similarly colored, but with a 
broader margin of black and more distinct stripes of black and white; pectorals, 
ventrals, and caudal in female but slightly pigmented, the ventrals in the males 
of an intense black with the outer rays white; the belly of the males black from throat 
to anal fin, including the base of the pectorals, the area sharply separated from the 
colorless area above. 
The males of this species differ from the females in color as shown above and 
also in the possession of paired tuberculated areas on the tip of the snout and an 
area with slightly smaller tubercles on the dorsal surface of the snout between the 
nostrils and above the anterior edge of the orbit. 
The fact that this species does not possess a barbel does not exclude it from this 
genus, because Acheilognathus cyanostigma Jordan & Fowler possesses the merest 
rudiment. All of the group with plicate pharyngeal teeth possess very small 
barbels. 
50. Acheilognathus tabira sp. nov. (Plate X XV, fig. 1). 
Acheilognathus limbata Jordan & Fowler, Proc. U.S. N. M., X XVI, 1903, p. 818, Lake Biwa at Matsubara 
and Karasaki, and Lake Yogo; (not of specimens from Morioka, and not of Schlegel) Tanaka, Ann. 
Zool. Jap., VII, Part 1, 1908, Iba, Matsubara, and Kihama. 
The types of this species are the original of the description of Acheilognathus 
limbata Jordan & Fowler, although the specimens utilized by them were mingled 
with A. morioke Jordan & Thompson. They are now in the collection of Stanford 
University. 
Described from numerous specimens No. 6007a type, No. 6016, forty specimens 
from Lake Biwa at Matsubara, collected by Dr. Jordan in 1911 and by Jordan and 
Snyder in 1900, ranging in length from very young to 85 mm. in total length. 
Depth 3.12 in body-length; D. III, 9 or 10; A. II, 9 or 10; scales in lateral line 
thirty-six or thirty-seven, in transverse series from first rays of vertical fins 6/5; 
pharyngeal teeth 5-5 (occasionally 6-5 or 5-6). 
Head 4 in body-length; snout 3.66 in head; mouth very oblique, anterior edge 
of premaxillaries slightly above lower margin of pupil, the region of the articulation 
of the mandible prominent; profile of snout arched above nostrils, not at tip of 
snout, which it does not overhang; eye large; gill-rakers 2+7; pharyngeal teeth 
hooked, with narrow grinding surface, some of them always serrated or folded on 
the lower lateral surface, although all are not usually so; lateral line complete; 
barbel very minute, fine of texture, less than one-fourth diameter of eye in length; 
caudal peduncle slightly more than twice in head, its length 1.25; breadth of body 
2 in head. 
