G. LISTER : MYCETOZOA. ^ 95 
on dead wood. The surface net of the capillitium has rather small, very 
uneven meshes bounded by slender threads ; the spores arè minutely spinu- 
lose, 5-6 u diam., with reddish-lilac rather firm walls. This is a puzzling 
specimen, holding a position intermediate between S. ferruginea and 5. pallida 
Wing. With the former it agrees in the small size of the spores, and with 
S. pallida in the scattered habit of the sporangia and the uneven surface net 
of the eapillitium ; the spores are browner than in typical S. ferruginea and 
less grey than in S. pallida. M. Meylan finds a similar form with more 
closely clustered sporangia in the Jura mountains, which he has called in his 
letters S. ferruginea var. violacea, a name that may be adopted for con- 
venience of reference. In this variable genus it appears that almost endless 
forms may be met with connecting the described species ; A. fusca Roth., 
however, is always distinguishable by the reticulated markings of the spores, 
Distribution. Typical S. ferruginea occurs in temperate and tropical 
regions, but is perhaps especially abundant in warm climates. 
CoMATRICHA TYPHOIDES (Bull.) Rost. A large growth was found on 
rotten wood, typical except that the silvery membranous sheath which 
usually clothes the whole stalk is confined to the upper third in these 
sporangia. | 
Distribution. Common in temperate and tropical regions. 
DIETYDLETHALIUM PLUMBEUM (Schum.) Rost., var. ENTHOXANTHUM ( Berk.) 
G. Lister, var. nov. /Ethalia 2-3 mm. thick, with bright yellow spores. 
The present specimens consist of large greenish-yellow æthalia 50-60 mm. 
diam., 1°7-2 mm. thick, surrounded by a white membranous hypothallus ; 
the dome-like apices or caps of the component sporangia are convex and 
minute, measuring 40-60 u diam.; the threads connecting them with the 
basal membrane are winged and broad, 7-9 diam. This robust variety 
was first found in Sikkim, and named by Berkeley, /teticularia entoxantha 
(Hook. Journ. Bot. iii. p. 201, 1851) ; Mr. Petch has since collected it in 
Ceylon. A link connecting it with the widely distributed typical form was 
found by Prof. Thaxter in Chili; this consists of large æthalia 2 mm. thick 
having the usual clay-coloured spores. 
LycoGaLa EPIDENDRUM (L.) Fries. Specimens of both the typical form 
and var. tessellatum Lister were obtained; the latter have dark brown 
ethalia, 3-6°5 mm. diam., rough with the characteristic many-chambered 
vesicles. 
Distribution. The typical form is abundant in temperate and tropical 
regions; var. tessellatum is much rarer, and has been obtained in the 
Cameroons, West Africa, Ceylon, Java, New Zealand, Texas, Philadelphia, 
and the State of New York. 
