434 FERNANDUS PAYNE. 



noted in Science ('25), I made a trip to Benson Creek July 30 

 and found a few hydroids on the flat stones in shallow water. 

 There had been much rain during the summer in this region and 

 the creek was muddy and most of the rocks were covered with 

 slime. The hydroids were small and were not producing buds. 

 Three weeks later the water had cleared and some of the slime 

 had been washed from the rocks in swift water. Hydroids were 

 found in abundance and transplanted to Boss Lake. They were 

 still small and were not reproducing. No medusae were found in 

 the Creek. I am inclined to think that no medusae buds were 

 formed, due to the many rains, the muddy water and slime, and 

 the small supply of food. 



September u, Dr. W. R. Allen, of the University of Kentucky, 

 wired that medusae were reported in the Kentucky River. The 

 next day he and I visited the river near College Hill, about 40 

 miles southeast of Lexington. We found medusae in abundance 

 at the first place we reached the river, and had no difficulty in 

 collecting several hundred during the course of an hour by 

 dipping them up one at a time. This is not the first time that 

 medusae have been seen in the Kentucky River. I have learned, 

 with the assistance of Dr. Allen, that Mr. Leonard Giovannoli, 

 now a graduate student in zoology at the University of Kentucky, 

 saw them at High Bridge in 1917. This was only one year after 

 Carman's discovery in Benson Creek. High Bridge is 50 miles 

 up the river from the outlet of Benson Creek into the Kentucky 

 River. In 1922 medusae were seen by Mrs. Alberta W. Server, 

 at Valley View, 35 miles still further upstream. During the 

 past summer, Mr. Wiley Sams, in the course of a canoe trip up 

 the river, saw medusse at three widely separated places. The 

 uppermost point was near College Hill, which is 40 miles farther 

 upstream than Valley View. Mr. Sams reported the medusae as 

 very numerous. 



As Garman had reported males from Benson Creek and since 

 both sexes had never been found in the same place, I took it for 

 granted that the medusae we collected were males. Upon arrival 

 in Bloomington with my catch I made an examination of the 

 medusae and also the eggs which had been shed in the water. 



