36 



B 



AW 



Fig. 13: Basioccipital in ven- 

 tral view (A-C). and para- 

 sphenoid in lateral view 

 (D-E) in hemitremians and in 

 the outgroup. A: Platygobio 

 gracilis (KU 11950.' 101.0 

 mm SL); B: Couesius plutn- 

 beus (KU 18881, 56.6 mm 

 SL): C: Phoxinus phoxinus 

 (CNUC uncat.. 76.0 mm SL): 

 D. Hemitremia flamme a (KU 

 18931, 54.8 mm SL): E. Pho- 

 xinus phoxinus (CNUC un- 

 cat.. 76.0 mm SL). Scale bars 

 = 1 mm. 



the outgroups, this angle is relatively smaller than that in other ingroups. - TS 22: Late- 

 ral view of the parasphenoid. angle a small [0]. or large [1]. 



18. Quadrate bone (Fig.l4A-C). Generally, in most ingroup and in the outgroups, the ven- 

 tral margin of quadrate bears a very shallow concavity (Fig.l4A, C). In Margariscus, the 

 concavity is deep and narrow (Fig.l4B). - TS 23: Ventral margin of the quadrate bearing 

 a shallow and wide concavity [0], or a deep and narrow one [1]. 



19. Symplectic bone (Fig.l4A-C). In most of the ingroup and in the outgroups, the dor- 

 sal margin of the symplectic bone bears a poorly developed process (or no process) arti- 

 culating with the metapterygoid (Fig.l4A, C). The process is better developed in 

 Margariscus (Fig.l4B) than that in other members of the ingroup and in the outgroups. - 

 TS 24: Process at dorsal margin of the symplectic poorly [0], or well [1] developed. 



20. Metapterygoid bone (Fig.l4A-C). In Couesius, a deep notch is present at the poster- 

 ior margin of the metapterygoid (Fig.l4C). The notch is not present in other genera of the 

 ingroup and outgroups (Fig.l4A. B). - TS 25: A deep notch at the posterior margin of 

 the metapterygoid absent [0], or present [1]. 



21. Opercle bone (Fig.l5A-C). In most ingroup and outgroups. the anterodorsal process 

 at the dorsal margin of the opercle is short and blunt (Fig.l5A, B). In Lagowskiella. the 



