PLATE IV 



Fishes of Colorado 



(p. 41I. Female. 



Fig. 20. — Phcrutcobii 



irabilis. Sucker-mouthed Minnow ip. 45). 



Fig. 21. — PhciiiU'obius miriibilis. Sucker-mouthed Minnow (p. 45). 

 Side view of head. 



Fig. 22. — Phenacobius mi- 

 rabilis. Sucker-mouthed 

 Minnow (p. 45). Ven- 

 tral view of head 

 showing sucker- 

 like mouth. 



Fig. 23. — Phenacobius mirabilis. FiG. 2^.—Phenacohius mirabi 



Sucker-mouthed Minnow 



(p. 45). Top view 



of head. 



lis. Sucker-mouthed Minnow 



(p. 45). Ventral view of 



the head, mouth 



open. 



