Davis—A Provisional List of Parasitic Fungi. 
849 
EMPUSA APHIDIS Hoffman 
On various aphides 
EMPUSA CULICIS A. Braun 
On CJiironomus 
EMPUSA MUSCAE Cohn. 
On house flies 
EMPUSA RHIZOPHORA Thaxt. 
On caddis flies 
EMPUSA SCIARAE Olive 
On Sciara 
EMPUSA GRYLLI Fres. 
On Caloptenus 
SAPROLEGNIACEAE 
SAPROLEGNIA THURETII DBy. 
On dead flies 
PERONOSPORACEAE 
ALBUGO BLITI (Biv.) O. Kuntze 
On Amaranthus retrvflexus 
hybridus 
blvtoides 
Acnida tuberculata 
ALBUGO PORTULACAE (DC.) O. Kuntze 
On Portulaca oleracea 
ALBUGO CANDIDA (Pers.) O. Kuntze 
On Lepidium virginicum 
Capsella Bursa-pastoris 
Cakile edentula 
Raphanus sativus (cult.) 
caudatus (cult.) 
Brassica alba (cult.) 
nigra 
Sisymbrium officinale 
Radicula palustris 
Gardamine douglassii 
