338 MOXOGRArH OF THE LABOULBENIACE.E. 
much smaller size of L. palmella^ its wholly opaque and short receptacle, straiglit, short-necked, 
proportionately stouter perithecium, large hoof-like base, together with the absence of furca- 
tion in the main axis of the two lateral branches of its inner appendage, afford sufficient 
specific differences. The antheridia appear to be represented by flask-shaped bodies borne 
on short hyaline branches near the tips of the branchlets of tlic inner appendages. The 
trichogynes are well developed and more or less copiously branched. The very large amount 
of material examined indicates that this species is subject to little variation in form and is rela- 
tively constant in size. 
1 
Laboulbenia Pheropsophi Thaxter. Plate XX, figs. 13-15. 
Proc. Am. Acad. Arts and Sci. Vol. XXA'III, p. 170. 
reritheciura becoming suffused with blackisli brown, straiglit, tlic two upper thirds free from 
the receptacle, rather slender, the outer margin curving abruptly inward to the base of the 
prominent tip, which is itself bent slightly outward, its base deeply suffused. Outer appendage 
slightly divergent, somewhat exceeding the perithecium, composed of usually five or six super- 
posed cells, somewhat longer than broad, each of which gives rise externally from its upper half 
to a single simple short branch, tapering distally. slightly constricted near the base, where it 
is divided by a blackened septum : insertion-cell rather broad, black, and considerably exceeded 
externally by the free upper surface of cell lY. Inner appendage smaller and similar or once 
to twice sub-dichotomously branched above its basal cell, the lower septa blackened. Pvcccp- 
tacle normal, cell II usually hyaline, the rest becoming suffused with olive-brown. Ppures, 
75x4.5^. Perithccia, 150x50/.. External appendage, 100-150^, its branches almut AO ^ 
long. Total length to tip of perithecium, 250-500 fx. 
) 
ndetermincd species from South Amer; 
^j>8ophu8 sp. indd.y Liberia, Africa (0. 
This form appears to be common on species of Pheropsophus from South America occurring 
on al parts of the host. In general form it is much like some vari^ics of X. elongata, but is 
at once separable by its appendages, which are peculiar both in form and method of branching, 
hbeld"^ ' exammed inthe collection of the Museum of Comparative Zoology one 
pimLr; "TTir ^^^•'^'^^(•)" ^-- 2--^-^. was found to bear a small number of 
ZTZ w th ,t r T 'T:"' " "^'^ ^'''' ^^- «P^«- --Pt tl-t the antheridia 
me^ re' I 1 t" T "T' '""^"^^^^' "^ ^^''^ - «^-^'^ "^- All the speci- 
t d and thef" f'" '''' """^'^^^^ ^^ '''' -^^^'^ developmen of the inner 
resemble in all respects. 
American types, which they otherwise 
