PLATE IV 



Fishes of Colorado 



Fig. 19. — Pimcphalcs proniclas. Black-headed ^Minnow (p. 41). Female. 



Fig. 20. — Phenacobius mirahilis. Sucker-mouthed Minnow ip. 45) 



Fig. 



-Phenacobius mirabilis. Sucker-mouthed Minnow (p. 45). 

 Side view of head. 



F: 



Fig. 22. — Phenacobius mi- 

 rabilis. Sucker-mouthed 

 Minnow (p. 45). Ven- 

 tral view of head 

 showing sucker- 

 like mouth. 



Fig. 23. — Phenacobius mirabilis 

 Sucker-mouthed Minnow 

 (p. 45). Top view 

 of head. 



Fig. 24. — Phenacobius mirabi- 

 lis. Sucker-mouthed Minnow 

 (p. 45). Ventral view of 

 the head, mouth 

 open. 



