Classification . 145 



Empiisa culicis, A. Braun, Alg. Unicell. p. 105; 

 Sacc. Syll. n. 969. 



Ou various small dipterous insects. Rare. 



Generally resembling Empusa muscm, but tbe 

 gonidia and resting-spores are much smaller. Large 

 cystidia are mixed with the gonidiophores. The host 

 is anchored to the substratum by numerous mycelial 

 " rhizoids.''^ 



Entomophthora, Fres. 



Mycelium developing within the bodies of living- 

 insects, broadly effused, branched, after the death of 

 the host giving origin to erumpent, digitately 

 branched gonidiophores ; gonidia colourless or 

 coloured; resting-spores globose, hard, epispore 

 smooth, produced within the matrix of the host, often 

 in a scalariform manner. 



Entomophthora, Fres. Bot. Ztg. 1856, p. 883 ; 

 Sacc. Syll. vii. 1, p. 282. 



The scalariform arrang'ement of the resting-spores 

 is owing to conjugation taking place between two 

 parallel hyphae that become connected by transverse 

 outgrowths as in the genus Spirogyra amongst fresh- 

 water algge, 



Entomophthora aphidis^ HofFm. 



Gonidiophores digitate, branches erect, or some- 

 times subsiraple and more or less clavate ; goiiidia 

 inconstant in form, elliptical, fusiform or irregular 

 and sometimes curved, colourless, 24-30x8-16 fju; 

 resting-spores globose, terminal on short branches, 

 wall double, smooth, brownish, 30-45 fjb diameter. 



Entomophthora aphidisj Hoffm. Abhandl. der Senk. 



