19 



too, the streams were still swollen and turbid when the 

 seining was being done. 



The period of investigation extended from May 23 

 to May 31, 1898, inclusive. The equipment necessary 

 for carrying on the work was furnished by the Zool- 

 ogical Department of the Ohio State Universit3', and 

 specimens of every species included in this list have been 

 placed in the Zoological Museum of this University. 

 Owing to the time of the year at which the collecting 

 was done, many species were taken in breeding color- 

 ation; and, unless otherwise stated, the color descript- 

 ions apph' to the brightest and most highly colored 

 males. 



Each day, temperatures were taken at six o'clock, 

 morning and evening, from May 23 to May 31, in- 

 clusive, to determine the temperature of the water 

 relative to that of the air. Parker's Run was taken as 

 fairly typical of the smaller tributaries of Big Jelloway, 

 and its average temperature was found to be, within a 

 very small fraction, the same as that of the air; while 

 the temperature of Big Jelloway averaged 4° warmer. 

 The "brook" Cyprinidae ( Chrosomus erythrogaster, 

 Rhinichtys atronasus, Leuciscus elongatus, etc.) were 

 breeding in water with a temperature below 60°, while 

 the " river" species ( Hybopsis amblops. H. kentuckien- 

 sis, Notropis cornutus, etc.,) were breeding at a temper- 

 ature of about 64°. The following table shows the re- 

 sults of our. observations on temperature. 



A. M. p. M. 



Average temperature of air 55 6-7° 62 6-7° 



of Big Tellowav.. 60 %° 67 1-7° 



of Parker's Run. 54 7-8° 63 6-7° 



Maximum " of air 58° 72° 



ofBigJellowav.. 62° 70° 



of Parker's Run. 57° 66° 



Minimum " of air 52° 56° 



of Big Jelloway.. 58° 64° 



of Parker's Run. 52° 62° 



