MONOGRAPH OF THE LABOULBENI V( E.^?. 315 
taclc normal, sometimes rather elongate. Spores, 75x55/^. Pcritliccia, 125-150x10^. 
Appendages (longest), BOO fx. Receptacle, 185-300 /*. Total length to tip of p<Tithccuini 
(largest), 300 /i. 
On Ptero&tichiis patrudis Dej., Maine and ^ra^sachust^lt^. 
This species may be distinguiished hy its rigid habit, htraiglit single ou((m^ nppondngo aud (ho 
gon 
blunt, snout-lilvc apex of its pcrltheoiuui. It is one of the less wol! marked types of the 
yet sufficient material from the two localities nvMitionod indicates tliat its characters are suffi- 
ciently defined to wai-rant its specific separation from otlier species of iho flagellata iypc. 
Laboulbenia Pterosticui Thaxter. Plate XVT, figs. 18-21 
Proc. Am. AcaJ. Avis an J Sd. Vol. XXVIII, p. ICG. 
Hv 
deeply, suffused with olive bro\rn, Pcrithccium 
becoming deeply suffused, the outer margin commonly straight, the apex rather coarse-h'i>pcd, 
the lip cells hyaline about the pore, more or less blackened below. Outer appendage consisflng 
of a large basal cell, above which it is usually two to three times successively dichotomouslv 
branched, the ultimate branches long, straight, tinged, offpecially the outer ones, with rctldish 
brown, the outmost often irregularly branched. Inner appendngc consisting of a small bnsal 
cell, giviug rise to from one to three short branches, beaiing one to si'veral fertile branehh'ts, 
sometimes also to one or more long sterile branches. Re^optaeh^ normal, nstially eloniratc. 
Spores, 75-80x6.5^. Pcrithecium, 130-160x48-55/*. Appendnges (longest), 725 /x, aver- 
age, 400-500 /*. 
1 
P 
Newm., Southern States. On Anhodactylm nigerrimus Dej., vicinity of Cambridge. 
This species is very closely allied to L. elongata and also to L. polgjJtaga^ of which it may 
* prove to be a mere variety, in some cases, especially in the variety on Auisodaetylus, which is 
very large (about 730 /t to the tip of its pcrithecium), the inner ajipendage may he more or less 
copiously branched. As a rule, however, in the tyincal form the inner basal cell of the append- 
age bears two short branches often less well developed Ihnn those shown in fig. IS, and bearing 
a varial)le number of branchlcts which bear the antheridia terminally in j)airs (fig. 20), tlie 
whole sometimes forming a short, dense tuft, as in i. polt/phaga. The species usually grows 
densely crowded on all parts of the host, including the extremities of the legs, where they do not 
appear to vary greatly. 
Laboulbenia tolyphaga Thaxter. Plate XV, figs. 18-2L 
Proc. Am. Acad. Arts and Sci. Vol. XX VIII, p. 165. 
Pcrithecium hyaline, becoming more or less deeply tinged with brown, rather narrow, the 
outer edge nearly straight, with a more or less well marked prominence below tbe apex ; tho tip 
prominent, rather narrow, bent outward, deep black, hyaline about the pore, with brown shades 
more or less well marked below the tip and about the lower half. Appendages two, tlic outer 
consisting of a large basal cell, which may be continued directly to form a long, simple, straight 
