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 XXV, fig. 1). 



Acheilognathus limhata Jordan & Fowler, Proc. U. S. N. M., XXVI, 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 

 limhata Jordan & Fowler, although the specimens utilized by them were mingled 

 with A. moriokce 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. Ill, 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. 



