LABOULBENIALES 



369 



begins to develop differently in different genera. Stigmatomyces Baeri 

 on the housefly in Europe may be taken as an example with a slightly 

 developed receptacle (Thaxter, 1896). 



The apical cell divides by an oblique septum into two cells of which 

 the upper is divided by a second oblique septum into two daughter cells. 



12 



— --a" 



Fig. 248. — Stigmatomyces Baeri. Development. (X 340; after Thaxter, 1896 



Thus three daughter cells are formed, which we will number, beginning 

 with the lower, as 1, 2 and 3 (Fig. 248, 3). The lowest cell, 1, divides by 

 an oblique septum, perpendicular to the original one, into a small apical 

 cell and a large basal cell. The new apical cell grows rapidly and pushes 

 cells 2 and 3 somewhat to one side (Fig. 248, 4). 



