120 PROCEEDINGS OF THE ACADEMY OF [April, 



NOTES ON FRESHWATER FISHES OF FORMOSA, WITH DESCRIPTIONS 



OF NEW GENERA AND SPECIES. 



BY MASAMITSU OSHIMA. 



Since the publication of my paper entitled "Contributions to the 

 Study of the Fresh Water Fishes of the Island of Formosa" (Ann. 

 Cam. Mus., 1919, pp. 169-328), many new fresh water fishes have 

 been obtained from Formosa. Moreover, as a result of extended 

 collections made by myself during the year 1918-1919, several 

 species formerly considered very rare have been secured in abundance 

 from the type-localities, or from other places on the island. 



In the present paper the following eight species which seem to 

 be new to science are fully described, and the record of new localities 

 for the known species is given as well. 



1. Acrossocheilus invirgatus. 



2. Lissochilichtys matsudai (gen et. sp. nov.). 



3. Scaphiodontella alticorpus (gen. et sp. nov.). 

 4- Leucisculus fuscus (gen. et sp. nov.). 



5. Spinibarbus elongatus. 



€. Rasborinus tanakii (gen. et sp. nov.). 



7. Rasborinus formosoe. 



8. Cultriculus akoensis. 



Here I express my sincere thanks to Dr. David Starr Jordan for 

 his kind assistance in determining new species; and to Mr. Eiji 

 Matsuda, of the Ako Public school, Formosa, who very kindly for- 

 warded to me a fine collection of fresh water fishes from Ako. 



The numbers in parenthesis, following the localities, refer to the 

 number of specimens examined. 



1. Salmo formosanus Jordan & Oshima. 



Head 3.51 in length to base of caudal; depth 4, 66; D. 3, 11; 

 A. 3, 10; P. 13; V. 9; snout 3.77 in head; eye 4.66; interorbital 

 space 4; maxillary 1.84; pectoral 1.50; ventral 1.75; scales about 

 140 in an oblique series; branchiostegals 12; gill-rakers on first 

 arch 7 -|- 10. 



Jaws subequal. Origin of the dorsal nearer to the tip of snout 

 than base of caudal, its longest ray 1.23 in head; caudal peduncle 

 3 in head. 



