62 



The intestine in Phoxinus is coiled and the looping pattern varies from very simple pat- 

 terns to complicated ones. The intestine of the genus can be classified into the Cyprinus- 

 type of Kafuku (1958) with different degrees of modifications (simpler or more 

 complicated). The species of Phoxinus share the following two characteristics in the coi- 

 ling pattern of the intestine (Figs.31A-G, 32A-D): 



Fig.3 1 : Dorsal view of intestine (a) and its diagrammatic model (b) of Phoxinus. A: P. neogaeus (KU 

 14254, 51.8 mm SL); B: P. issykkulensis (P-10696, 42.4 mm SL); C: P. phoxinus (KU 22853, 56.4 

 mm SL); D: P. cumberlandensis (ANSP 138365, 33.0 mm SL); E: P. eos (KU 4578, 41.8 mm SL); 

 F: P. cumberlandensis (ANSP 138365, 24 mm SL); G: P. cumberlandensis (UT 44.3096, 51.3 mm 

 SL). Scale bars = I mm. 



