INFLUENCE OF ENVIRONMENT ON SEX 



233 



TABLE 5 



Neuter Cre-pidulas Iransferred to neighborhood of large females. Sectioned after 

 thirty-four days. Specimens from each hermit's shell listed together. Wherever 

 sufficiently marked, increase in length of shell {'growth') and amount of develop- 

 ment of penis, during course of experiment, have been recorded. Summary of 

 results: with adult testis, 18; testis to spermatids, 6; testis to spermatocytes, 2; 

 loith spermatogonia only, t; sexually inactive, none. Total, 27 



Hermit 1 



Hermit 2 



Hermit 3 



183 



11 



None 



Spermatogonia; 

 tids 



sperma- 



Not included in sections 



Hermit 4 



Long 



Long 



Long 



Long 



Stump 



Stump 



Long 



Adult testis, large 

 Adult testis 

 Adult testis 

 Adult testis 

 Adult testis 



Spermatogonia and sper- 

 matocytes, very active 

 Adult testis 



Vesicle, full of sperm 

 Vesicle, full of sperm 

 Vesicle, full of sperm 

 Vesicle, full of sperm 

 Vesicle, full of sperm 

 Empty tube, somewhat 



convoluted 

 Vesicle, full of sperm 



