Fishes from the Monongahela River. 339 



20. Rhinichthys atronasus (Mitchill). (321.) 



A single specimen from Pigeon Creek. Others were seen, however. 



21. Hybopsis STORERIANUS (Kirtland). (330.) 



Abundant in the river. There is little doubt that this species equals 

 CeraticMhys lucens Jordan. 



22. Semotilus atromachlatus (Mitchill). (347.) 



Chub. 

 Very abundant in Pigeon Creek. 



28. Dorosoma cepedianum (Le Sueur). (455.) 

 Abundant in the river. 



24. Percopsis guttatus Agassiz. (532.) 



Very common in the river. 



25. Pomoxts annularis Rafinesque. (842.) 



Calieo Bnss. 

 Very common. 



26. Pomoxis sparoides (Lacepede). (843.) 



Calico Bass. 

 Found in about equal numbers with the preceding. 



27. Ambloplttes rupestrts (Rafinesque). (845.) 



Redeye ; Goggle eye. 

 Abundant in the creek, less so in the river. 



28. Micropterus dolomiei (Lacepede). (877.) 



Small-mouthed Black Bass. 

 Abundant in the river. 



29. Etheostoma pellucidum Baird. (880.) 



Common everywhere in suitable places. 



30. Etheostoma nigrum Rafinesque. (885d.) 



One of the most abundant darters of the locality. 



31. Etheostoma blexnioides Rafinesque. (894.) 



Not very common. 



32. Etheostoma caprodes Rafinesque. (899.) 



Very common, especially at Lock No. 9. 



33. Etheostoma phoxocephalum Nelson. (901.) 



The collection contains four specimens, all from Lock No. 9. 



34. Etheostoma variatum Kirtland. (912.) 



Little, if anything, was known of this interesting darter since 



