98 CORA D. REEVES 



2. Red avoidance and behavior toward blue 



a. Eupomotis gihhosus 



28. One sunfish circled about the red 

 lighted area as far from it as possible 

 and with her head toward the light. 

 This fish often seemed to bask in the 

 blue light, remaining with the direct 

 rays of light shining upon her and with 

 one side turned so as to receive more 

 light than when in a vertical position, 

 (p. 58.) 



b. Pimephales notatus 



29. When matched blue and gray plates 

 were presented to several untrained 

 Pimephales notatus, they promptly ap- 

 proached them; but when a red plate 

 was substituted for the blue, they 

 remained at a distance, (p. 59.) 



c. Semotilus atromaculatus 



30. When an untrained fish was tested 

 with matched blue and gray patches, 

 one-third to one-half of a minute was 

 sufficient for the fish to swim up to 

 the lighted areas, but when the same 

 blue patch was matched with red, 

 approach was completely inhibited or 

 was inhibited for five or six minutes 



3. Delayed Response 



31. Two dace and three sunfish, fed before 

 the blue plate from October to March, 

 in the blue-red series, usually reached 

 the stimulus patches three to twelve 

 seconds after the opening of the door 

 D (fig. 2). They were shown the blue 

 with a matched gray. They failed to 

 leave the discrimination compartment 

 or left after a long wait. The average 

 time of response was over 100 seconds 

 for the four fish showing the best dis- 



