REVISION OF ENDOGONEAE. 301 



With reference to the occurrence of this species in Europe, it may be 

 mentioned that the single specimen collected by Bucholtz in Livonia 

 was found " in einem nadelwald unterirdisch," and was associated with 

 insect-remains, which suggests that it maj' have grown on the dung of 

 some small animal, a habitat which I have myself observed. The 

 apparently copious material collected in Thuringia by Ludwig, which 

 forms the basis of the account given by Bucholtz, was found on the 

 dung of Liparis caterpillars. The specimens distributed by Krieger 

 were found "Auf Moos, faulenden Blattern, Aestchen, unter Strau- 

 chern von \ accinium myrtilus auf dem Fichtelberge in Erzgebirge." 



With regard to mutual identities in connection with this species, it 

 should perhaps be clearly stated that while the use of the name E. 

 pisiformis and the inclusion of E. xylogcna as a synonym represent 

 merely my personal conclusions. Professors Atkinson and Bucholtz 

 have both examined the material on which the present account is 

 based, and have pronounced it identical with E. sphagnophila in the 

 one case, and E. Ludwigii in the other. It may further be mentioned 

 that one of the specimens distributed by Krieger, has been examined 

 by me personally, and is also identical; although a second specimen in 

 the same copy of this set, the gross appearance of which is very similar, 

 proves to be Sphaerocreas puhescvns. As it is stated that the fungus 

 was found "sehr selten," it may be assumed that the distribution is a 

 miscellaneous one, accumulated from more than one gathering. The 

 possible relation between Sphaerocreas jmbesccns and Endogone pisi- 

 formis will be further alluded to under the former species. 



For convenient comparison, the description of E. xylogena given by 

 Schroeter (1. c.) may be here appended. 



"Endogone xylogena (Saccardo (1877): Protomyces x.). Fruiting 

 bodies irregularly rounded, flattened, 3-4 mm. broad, 1-2 mm. thick, 

 waxy when fresh, horny when dry, reddish yellow. Peridium thin, 

 formed from 3-5 jx thick, strongly refractive hyphae, smooth. Gleba 

 homogeneous, consisting of closely woven hyphae between which the 

 spores are disposed. Spores spherical to elliptical or ovoid, 35-50 X 

 26-40 jjL, the wall 6 /z thick, nearly hyaline, contents clear orange 

 yellow. 



Endogone multiplex nov. sp. 



(Figs. 8-10.) 



Fruiting body about 15 X 12 mm., dirty whitish, turning yellowish 

 brown in alcohol; somewhat lobed, the surface rough from the pro- 

 jecting contours of the very numerous small, more or less firmly 



