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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. ^'J 



On June i a visit was paid to the hybrid Cerion colony on New- 

 found Harbor Key. This was found to be in a flourishing condition 

 and lOO specimens were taken to Washington for record and dis- 

 section. From June 2 to June 15 was spent at the Tortugas where the 

 various Cerion colonies which have been established there were 

 studied and new ones added. All the colonies were found to be 

 doing well, excepting that of Cerion iiva from Curagoa, which is on 

 the verge of extinction. 



1* iG. 55. — Four of the six island groups. 



We gathered a number of F2 Florida-grown specimens of Cerion 

 crassilabre, which show no measurable differences from those of the 

 check series of the Fi Florida-grown generation, thus again con- 

 firming our finding with the other races of transplanted Cerions, that 

 changed environmental factors have no appreciable influence upon 

 the Fi and F2 generations of the transplanted material. 



A large series of offsprings of the mixed colony of Cerion casa- 

 blancae and Cerion viaregis (Colony I) were gathered and taken to 

 Washington to be carefully studied for a possible cross. 



