MONOGRArri OF THE LABOULBEXIACK^:. oil 
Laboulbenia Paceytelis Tbaxtcr. Plnfc XX, figa. 9-12. 
Pror. Am. Acad. Art* md Sti. Vol. XXVlII, p. 173. 
Pcrithccitim rather small, but slightly exceeding the receptacle, suiTusr.l with dnrk ulive- 
brown, becoming irnarly opaque, taj.eiintj nbruptly to Ihc rather slender blackened tip, which is 
beat sllshtlj outward, the nearly hyaline lips onlwardly ubliqnc. Appendages two ; the outer 
forming a sub-conical body composed of superpoBcd flnltcned cells four to ten in number, each 
Qficcn 
branch, blackened at its base, where a basal coll is cut olT by a conirasting black H^ptum. 
The inner appendage consisting of a Finall basal and sub-buKal cdl ,sc-paratcd by a blackened 
septum, the upper giving rise dirtctly to from one to three antheridia or hurt sterile brandies. 
Receptacle short or elongate, nearly hyaline or becoming distally suffused with blacki.sh brown, 
normal, except for the unustial development of cell V, which extends along the inn^r margin 
of the peritheeium beyond the inserti-.n of the appeiuhigcs, pushing them ontsvard free from 
the peritheeium. Spores, 66 x 7 ft. Pcrilhecia, 110-150 x 50 ^. Outer appen.lacc, without 
branches, 90 ^ long, the branches (longest), IRO/x. Total lenglh to tip of peritheeium, 300- 
G50 IX. 
Oa P achy teles mexicanua Chaud., Mexico. 
This striking species is distinguished at once by its outer appendage, which cannot be mis- 
taken for that of any other form. It is rather variable in size as well as in the structure of 
its receptacle and its relation to the peritheeium, which is more commonly that represented in 
fig. 9. This individual, however, shows an abnormal scptation of cell IT. Numerous siMJcimcns 
were obtained from the legs and inferior surface of its host. 
LABOULiiENiA MoKiONi.s Tliaxtcr. Plate XXI, figs. 19-22. 
Troc. Am. Acad. Arts and Set Vol. XXVllI.p. 169. 
Pale straw-colored throughout except for a slidit blackish brown shade below the apex of 
the peritheeium. Peritheeium small, narrow, its whole inner margin connected with the recep- 
tacle, beyond which the rather truncate hyaline tip projects. Appendages inconspicuous, con- 
sisting of two basal cells, each of which may bear one to three short bi-anches. Receptacle 
elongate, slender, expanding but slightly toward its extremity without any abrui.t enlargement, 
the small blackened insertion cell carried outward with the appendages free from the perithe- 
eium. Spores, 65 X 5 /*. Appendages, 40-50 fi, Perithccia, 110-125 X 30 /x. Total length to 
tip of peritheeium, 375-425 /i- Greatest width, including peritheeium, 50 /^. 
On Morio GcorgicR Pal., Mexico. 
This singular species is distinguished by its narrow habit and small peritheeium, which is so 
closely united to the receptacle and so slightly distinguished from it that it appears at first sight 
undeveloped. In some specimens the hyaline tips of the lip cells only are free beyond cell V. 
The appendages are almost obsolete in some instances, and are more reduced than in any other 
species. It seems undoubteaiy allied to x>\ 
the allied hosts Clivina and Schizogcnius. 
(X. Schizo'jcnii and X. Clivince) occ 
