472 
Trijjyanosoma leivisi 
anything to do with sexual differentiation, but may be explained by the 
fact that such forms as figs. 1 to 3 are about to divided 
In this period the curious long-tailed forms, mentioned already, are 
also to be found (Diagram VI, fig. 1). 
Polymorphism of full-grown cells during the period of division. 
( /’) Autogamy. In a recent article Schilling (1910) describes some 
changes in the relative position of the nucleus and the blepharoplast in 
dividing forms of T. leivisi. He holds that these changes indicate an 
autogamy. The blepharoplast comes near to the nucleus and seems to 
come in contact with the karyosome for a short time. 
Diagram XII. 
“ Autogamy.” 
■fir 
1 This explanation of the dimorphism does not apply to T. gainbien$e and diinorphon 
Here we have perhaps a real sexual differentiation. 
