NOTES ON MYCETOZOA 1389 
ARCYRIA FERRUGINEA Saut. (Pl. 459, fig. 5). An example of this 
species, found near Ziirich, and submitted to us by Prof. Schinz, 
exhibits a remarkable cen from the eee type in the 
character of the einai the threads are beaded with globular 
or oval expansions about 10 » diam., either crowded or separated 
by cater vals of 10 to 20 p; ey are marked with a small-meshed 
8 
sessile, rarely shortly ago ve are provided with a —— 
sporangium-wall; there some monstrous spores, though a 
the weiner was entirely such as we have described; in some, 
however, it was of a more typical form. Imperfect developments 
with globular expansions in the axils of the branches are not un- 
frequently met ers in the capillitium of this species; the Swiss 
specimen is no doubt abnormal, but this great variation from the 
usual type is worthy of record because suppoved distinct species have 
been described based on differences in the structure and sculpture 
of the capillitium of 4. ferruginea. 
PERICHENA VARIABILIS Var. PEDATA, N. Var. (Pl. 459, figs.8, 4). This 
is a variable species, as its name implies, but it is not until pect 
that we have obtained a stalked form; it is usually found in verm 
form or net-like plasmodiocarps, and less frequently as globoss 
sessile sporangia. In April, 1902, we gathered seven examples of 
ad | 
yme Regis Undercliff; they were globose sporangia, ochraceous 
brown in “colour, with nearly black stalks about 0°3 mm. long an 
0-1 mm. thick; some sporangia were broken, leaving onl a flat per- 
sistent aie, as shown in the figure; the abundant *apillitidm was 
of the typical form; the spores were Spas smaller than usual, 
8-9 p. e have received from Mr. Bilgram a specimen collected 
by him at Chestnut Hill, Philadelphia, in August, 1903, which 
resembles the Lyme Regis gathering in all respects, except that 
the stalks vary from 0:3 to 0-1 mm. n length, and the spor- 
angia are often reniform; they are a solitary or in clusters of 
two to three on a bit stalk, or sessile. In both the English and 
American specim s the r sporangium-wall is nearly smooth, 
and the papi Hines! ichabaetéb ides to the species is faintly indi. 
cated; in this respect it resembles the wall of P. chrysosperma, a 
species in which the sporangia are sometimes more or less stalked. 
The specimens are interesting rineaitch as they exhibit the near 
relationship between P. variabilis and P. chrysosperma, but they are 
distinguished from the latter by the absence of hooked spines on 
the capillitium-threads. It may be that they represent a distinct 
species, and they have a bearing on some perplexing sessile forms 
rons similar sporangium-walls which we have provisionally placed 
P. variabilis, The material at our disposal is, however, too 
limited to warrant our doing more than mark it as a variety of the 
nearest ally, 
