56 
INSECTS AS FUNGUS HOSTS. 
Oft envilonment, the natiu’e of wliicli has in many cases yet to 
be investigated or even discovered, but that these conditions are 
not exclusively climatic in their nature has been definitely 
ascertained. Taking the case of these fungi, which may be con- 
sidered as species of Entoinopthora, or close allie.s, it has been 
ascertained that the two forms may occur on the same insect 
simultaneously, and this is true of fungi of this genus oecurrinc 
m 111, sect hosts belonging to such distinct categories as do cater- 
pihars and grasshoppers. Again, in the case of others the 
different phases make their appearance at different times of the 
year. - urther, what is still more remarkable, one form seems 
oocasiona lly to be i-estricted to a particular geogi-aphical .one. 
renZ.'H mentioned that Krassilstscliik 
wonns ’ T Entomopthora which destrovs the » ciit- 
of the wheat-Agrotis segetum— at Odessa always 
occurs in the conidial form 
according to Cohn it i.s met with 
•j . . * bU L^Oxl 
the widely separated 
e^ion to Minch his investigations relate. Thomdi a-ain the two 
forms may be confined to the same kind nf t«o 
rarely that quite different insects may smte 1 
And what is more remarkable still^H respective hosts. 
(E. callipliorm), as Professor Giard \iarLformed^"‘°“°^’''^“' 
m a fly. which lias only been met occurring 
the phase in wliioli resting-spores occur “ 
seut special peculiarities ivliich are evietlv r 
Avlheli hitherto has been found exclu^vel 
of frogs and lizards, which are know n to^I 
files of the same genus C’alliphora— rh.. *0 the 
mg the resting-spores of the fly p-u-asite ^ contain- 
m an incipient stage of <^rowth ^ A ■ -f organs 
these conidia and restin»-sDove« '' * might have been inferred 
two phases in the Wu^SowH ^Earacteristic of the 
morpliological charactm-s are their distinct 
as living objects. The former i? V m®rent m their behaviour 
logical conditions which they .five readily ; the patlio- 
facihty through their ao-enev “tn ii “ communicated with 
selves quickly pensi,. ° 0 n the but they tlieiu- 
liave their vitality persistent but restiiig-spores 
when ke “uiite “"’“‘.I' S.mLt. 
jpareiitly suitable conditions 
