Tin: 11.01; \ OF m:i'.k isk \. 



Entomophthora grylli Fbes. l. a 



K. calopteni Besses Am. Nat. XVII.. L280and 1286. 188 t. 

 Resting spores spherical, colorless, ::" 15 . 

 On grasshoppers. Mr/nun, ,1ns differ ntialis, M. bivittatus, and M 



rulnum; very common in autumn. PI, XV., Pig. 3, a, b. 

 The affected grasshoppers climb to the i - » | . — . of weeds an. I die there attached 



to the stem. They are readily known by their tighl an. I rigid grasp, due 



to contraction of (he Limbs 

 According to Thaxter, E. calopteni is nol distinct from tin- European I 



which is found on crickets. 



Order 5.— NIPHOXI! A E.— Typically unicellular, chlorophyll-green or colorless, 



filiform (sometimes branched), saccate, or foliaceous, one to plurinucleate; 

 chloroplasts disk-shaped, parietal: propagation by cell-division; or by 

 zoogonidia; reproduction either heterogametic or Lsogametio. 



SYNOPSIS. 



Fam. — Vancheriacoae. — Terrestrial or aquatic; thallus filiform, elongated, often 



branched; reproduction by antherids and oogones borne laterally on the 

 filament; propagation by zoospores, zoospores large, arising from an 



apical inflation of the filament. 



Fam. — H ydrogastraceac. — Terrestrial; thallus a globose or pyriform cell attached 



to the earth by branching, hyaline rhizoids; reproduction by copulation 



of zoogonidia. 



Fam. — Saprolegniaceae. — Aquatic fungi, mostly saprophytes, rarely parasites; 

 asexual reproduction chiefly by biciliate zoospores arising in zoospor- 

 angia; sexual reproduction by oogones and antherids generally borne 

 upon short lateral branches. 



Fam. — Peronosporaccae. — Fungi growing parasitically in the subdermal tissues 



of flowering plants, piercing the cell walls by mean- of haustoria; asexual 

 reproduction by conidia; sexual reproduction by oogones and antherids 



borne laterally upon mycelial filaments. 



Family. -VAUCHERIACEAE. 



Apparently unicellular, filiform, terrestrial or aquatic, chlorophyll-green; Forming 

 elongated, tubular filaments, simple or pseudo-dichotomously branohed,often attache I t" 

 substratum at base by hyaline rhizoids; propagation by motile ornon motile cells formed 

 in apical inflations; reproduction by antherids and oogones, usually on t he same BJamenl ; 

 oogones lateral, sessile, or borne on a more or loss elongated, simple or hranche I pedicel, 

 cytoplasm converted iuto a large oospore; antherids lateral, sessile, or oul off by a septum 

 from the upper portion of a lateral branch, producing antherozoids internally, which, 

 being emitted, penetrate the apex of the oogone; antherozoids oblong, furnished with 

 two unequal cilia. 



1. VAUCHERIA DC. in Vauch. Hist. Confer. 25. Lfi 



The characters of the family: chloroplasts minute, numerous, parietal; nuclei 

 globose, numerous, small: protoplasm containing numerous oil globules. 

 Etymology: dedicated to the phycologisl Vauoher. 



