227 
D. Keilin 
t r. 
Fig. 2. Stegomyia Scutellaria Walker. Transverse section of an abdominal segment of the larva 
showing the sporangia, spr., of Coelomomyces; i, midgut; ix., intestinal cocca; tr., tracheal trunks. 
Fig. 3. Coelomomyces stegomyiae. A and B, sections of the mycelium stained in glychacmalum: 
th,, terminal thickenings which become transformed into sporangia; C , fragments of mycelium 
with terminal swellings in a more advanced stage; D and K, fragments of mycelium showing 
transverse branches with diverticula or spherical thickenings, x; F, the ordinary form of 
mycelium. 
15—2 
