398 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^. 
Laboulbenia bicolor nov. sp. Plate LXII, figs. 13-15. 
Perithedum free, subisodiametric throughout, or with a slight general inflation, rich dark clear brown 
1m i oming almost opaque, often darker on the inner half, more or less granular; the granulation coarser 
at the base: the tip short, abruptly distinguished, broad, suffused, the inner lip often more prominent and 
hyaline: a clearly defined short hyaline stalk. Receptacle consisting of a contrasting hyaline basal cell 
as long as the balance of the receptacle, or nearly equalling it in length: cell III extending upward beside 
cell IV, its apex forming a prominence just below and external to the insertion-cell: cell II abruptly 
narrower than cell I, which is prominent below it, especially on the posterior side, opaque, the opacity 
involving finally cells II VI, which usually remain more or less hyaline distally. Insertion-cell broad 
and black, continuous with the opaque basal cell of the outer appendage, which forms a more or less 
conspicuously developed Upcurved external prominence, bearing the lower branch of the appendage, 
which is further composed of three or four obliquely superposed cells each bearing a single simple branch: 
the branches consisting of a basal and distal portion, the former two celled, the cells short inflated and 
distinguished by suffused septa; the latter unicellular, or spuriously septate, tapering, faintly brownish, 
CO 
cell wholly or only partly suffused, the rest of the appendage consisting of about four hyaline obliquely 
uperposed cells, bearing simple branches similar to those of the outer appendage; except that the basal 
and subbasa] cells give rise to short stalk-cells, with single terminal antheridia; the latter with rather long 
curved slender necks, the base usually somewhat inflated, often broader than the stalk-cell, which is seated 
on a blackened septum. Perithecia, exclusive of stalk (18 /A type-form 
125-150 
1 80-225 X 45 //. Receptacle, type-form 100-1 
ages 125-150 fL Total length to tip of perithec 
tyi>e-form 50 X 5 ft, larger form (15 X 6 a. 
Append- 
275-300 fi, larger form 325-400 /i. Spores 
Type on a slender black Galerita, Paris Museum No. 73 Venezuela. Larger form on Galcrita car- 
honaria Manncrh., Berlin Museum No. 960, Brazil. On the legs. 
type 
|>eeies (fig. 14), but although the Brazilian type presents constant differences in general size form and in 
the detail of the appendages, I think it should not be separated, even as a variety. It is conspicuous for 
the black and white effect of the contrasting regions of the perithecium and receptacle, which has suggested 
the specific name. The suffused portions of the receptacle, before becoming opaque, are usually more 
or less conspicuously mottled or punctate with darker flecks. 
Laboulbenia Colpodls Thaxtcr. Plate LXII, fig. 16. 
Proc - Am - Acad - Ar ts and Sci., Vol. XXXV, p. 166. Dec, 1899. 
IVnthccium wholly free, very large, uniform clear translucent brown, slightly inflated or the margins 
oa.ght the basal wall-cells forming a well marked hyaline neck as broad as the base of the ascigerotis 
portion Iron, .which »t is not abruptly distinguished; the tip rather narrow and well distinguished, darker, 
the distinct up-edges hyaline or translucent. Receptacle very small, cell I hyaline or yellowish, the rest 
...ore or less deeply suffused with blackish brown becoming nearlv opaque, especially cells III and IV, 
Which he sale by s.de and are about equal in size, cell III forming a rounded prominence just below th, 
outer edge of the inserbon^eH, cell V triangular, about as large as cells III and V combined. Insertion- 
eell very broach thin nJinna rw «± g^i ,v __ i ■ t * ' . . . . 
cell very broad, thin, oblique not at first & ply blackened, but becoming indistinguishable in the genera 
btacfash brown suffusion of the adjacent cells. Outer appendage consisting of a nearlv erect series o 
1 
bee 
producing 
l.rinr.l, «■**«, i i v, i ° — — ~w ivoo omiuocu, cacn producing externally a sm^ie simp^ 
I::;::; o h ; z 1 \x:; • s r;: ^ — ? ° f ?»«■»* — «« £U »*/*. ^ .». 
1 9 
tapering, hyaline, except 
mg 
