86 
A New Saccharomycete . 
Description of Monosporella unicuspidata n. sp. (Fig. II, l to 17). 
In the young stages, the parasite occurs in the form of small oval cells 
from 4/z to lO^u, long, budding at one end. The buds are usually single (Fig. II, 
l to 6) but occasionally two or three buds are formed simultaneously (Fig. II, 
10 
sp. 
12 
a. sp. 
10/Lt 10 fi 
y . I—■—i-H-1-1-1 
Fig. II. Monosporella unicuspidata n. sp. 1 to 6, different stages of budding cells; / and 8, rare 
cases of multiple budding; 9, ordinary budding; 10, chain with three cells; 11, elongated 
cell developing into ascus; 12, ascus with the beginning of the spore formation (sp.); 13 and 
14, more advanced stages of spore formation; 15, ascus (a.) with well formed spore (sp.), 
t. thickened wall of the ascus; 16, deformed ascus; 17, spore. Figures drawn with camera 
lucida, slightly schematized, the refractory spores being represented in black. The scale of 
magnification is given beneath the figures. 
7, 8). The new buds generally detach themselves very soon and begin to bud; 
in only a few cases did I find three cells joined to form a chain 24/x in length 
(Fig. II, io). When the body of the larva is completely invaded, the parasites 
become elongated and acquire a uniform shape reaching 30/x in length and 
