EXPERIMENTS IN THE BREEDING OF CERIONS. 



25 



is on a ridge in a scanty growth of Uniola paniculata and the place is 

 marked by a stake bearing a tag with the legend "Cerions, Z." In 

 June 1915 we gathered 49 adult or almost adult specimens from this 

 colony. These were measured, photographed, and planted in a little 

 meadow to the west of Colony F, at a place marked with a stake 

 bearing the legend "Cerions, 1915, K." The measurements are shown 

 in table 8, while the figures appear on plate 25. 



In May 1916 we gathered 78 additional adult specimens of the first 

 generation of Florida-grown individuals in this colony, which were 

 photographed and returned to the stake marking this colony. For 

 measurements of these see table 9, and for the pictures see plates 26 and 

 27 and figiires 73-78 of plate 24. 



In January 1919 we found many shells of various ages scattered over 

 the ground, and the colony, although small, is doing well. 

 The Loggerhead Key Colony H. 



On June 8, 1912, a planting of 500 each of Cerion viaregis and Cerion 

 casablancce was made on the south side of the path leading from the 

 light-house to the boat-house on the west shore, in order to determine 

 if these two forms would cross when given an opportunity. 



