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Fy shy 0S Acheilognathuse 35 
XVIII. Acheilognathus longipinne Regan. (Cyprinidz.) 
Plate TX, te. 27. 
Biwa-tanago. 
Acheilognathus longipinnis Regan, Ann. Mag. Nat, Hist., Ser. 7, XVI, 1905, p. 
364; Yamasabu River, Lake Biwa. 
Habitat—Fresh water; Lake Biwa; Gifu, Prov. Mino. 
Head 4, height of body 2; in total length without caudal. Eye 34, interorbital 
2%, snout 4% in head. D. II, 15; A. JJ, 14; P. 15; V. 8; scales 6-36-6}. 
Body deep, much compressed ; caudai peduncle also compressed. Head short, 
compressed ; eye large, high, lateral; interorbital space rather broad, elevated, 
somewhat concave medianly ; snout short, in profile very steep anteriorly. Mouth 
subinferior, maxillary extending beyond anterior rim of anterior nostril. No barbel. 
Gill-openings large, joined to the isthmus; gill-rakers on first gill-arch very short, 
weak, 3-++14. Pharyngeal teeth 5—5, sickle-shaped, with transverse strize on sides, edges 
entire ; pseudobranchize well developed. Origin of dorsal slightly nearer base of caudal 
than tip of snout. Anal inserted below seventh dorsal ray counting from first 
ISA ay 2 a a (ABT) 
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