144 British Fungi, 



The species form in most cases white, mould-like 

 developments on the bodies of insects. Distinguished 

 from Eiitonioijlitliora more especially by the mode of 

 branching of the gonidiophores, which in the present 

 genus are simple or irregularly branched, whereas in 

 Enfomoplitliora the branching is truly digitate. 



Emjjusa muscse, Colin, (fig. 98). 



Gonidiophores simple, crowded, clavate, emerging 

 between the segments of the host after death, gonidia 

 terminal, subglobose, apex slightly mucronate, base 

 truncate, colourless, variable in size, 18-30 yu. ; azy go- 

 spores produced laterally or terminal on hyph^ 

 within the host, globose, epispore thick, colourless, 

 30-38 /J, diameter. 



Empusa muscse, Cohn, Nov. Act. Acad. xxv. pt. i. 

 p. 317; Sacc. Syll. vii. n. 968. 



Sporendonertia muscse, Fr. Syst. Myc. iii. p. 438. 



rorm.ing a white, mould-like growth on the bodies 

 of dead house-flies ( Masca domestica) and other dip- 

 terous insects. Common. 



Dead house-flies are frequently seen during the 

 autumn attached to window panes by a white halo 

 formed by the hyphge of the present species. 



Empiosa culicis, A. Braun. 



Gonidiophores clavate, simple or branched, some- 

 times becoming confluent in white or greenish masses, 

 gonidia subglobose, colourless, apex apiculate, base 

 truncate, 8-12 X 7-9 fi ; azygospores globose, pro- 

 duced laterally or terminal on hyphge within the 

 host, colourless, 24-28 /t diameter. 



