338 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E 
basal ceil similar to that of the outer, and producing on either side a straight hyaline erect branch. Spores 
50 X 4 ft. Perithecia 130-140 X 30-35 /i exclusive of the variably developed neck, which may be 18 \l 
long. Total length to tip of perithecium 260 Jt; to insertion-cell 100 fi; width 40 fi. Longer appendages 
200 270 fL 
( )n margin of elytra of Orfliomus (Argutor) aquilus Coquer, Algeria, Paris Museum, No. 41. 
The typical form of this species, which is represented in fig. 14, is a clearly defined and readily recog- 
nizable type; yet among the individuals examined with which this type form was associated, are several 
variations, notably the elongate form represented in fig. 15, which measures about 380 /i to the tip of the 
perithecium, lacks the well defined hyaline neck at the base of the latter, and in which the elongate recep- 
tacle is dirty brownish yellow, with olive shades, only, in the distal region. The outer appendages are 
normally simple, and where branches occur, they appear always to have arisen as the result of injury. 
Laboulbexia Drypt^e Thaxter. Plate LIV, fig. 19. 
Proc. Am. Acad. Arts and Sei., Vol. XXXVIII, p. 35. June, 1902. 
Perithecium usually nearly straight, often nearly symmetrical, the region corresponding to the basal 
wall-cells usually distinctly differentiated, hyaline or transparent, brownish, becoming darker in older 
individuals, concolorous with the basal and other cells below; but in general contrasting strongly, 
but not abruptly, with the rich dark brown of the rest of the perithecium above it, which may become 
opaque; the tip often bent slightly outward, not abruptly distinguished; the inner lip-cells more promi- 
nent and deeply suffused, except the edges. Receptacle rather short, punctate, becoming more or less 
irrecrul 
cell, which is thick, well defined, contrasting. The appendages rather slender; the outer nearly straight 
in norma] individuals, simple, divergent, rigid, tapering; the basal cell more than twice as broad, subhya- 
line, with brownish suffusions next its deep black contrasting outer wall, the opacity sometimes involving 
the subbasal cell, which is similar and similarly blackened externally, as is the cell next above: the inner 
appendage simple, or more often once branched above the subbasal cell, divergent like the outer, brown- 
ish yellow, the antheridia borne singly from the lower cells. Perithecia 110-150 X 35-40 //. Receptacle 
220-250 
ficoll 
This species is perhaps as closely allied to L. Orthomi as to any other, and is distinguished from the 
fact that the basal cells of the perithecium form an enlargement below the latter, rather than a more 
slender neck. The form and relative size of the perithecium are also different. 
Laboulbexia .melanaria. Thaxter. Plate LIV, fig. 18. 
Proc. Am. Acad. Arts and .Sci., Vol. XXXV, p. 186. Dec, 1899. 
Perithecium nearly free, uniformly suffused with clear blackish brown, straight or bent slightly out- 
ward; the tip more deeply colored, the lip-edges hyaline, contrasting, externally oblicme. Receptacle 
hyaline becoming yellowish, often suffused with blackish brown except the lower portions of cells I, III, 
md VI, and usually cell V. Outer appendage consisting of a basal cell mostlv free, bearing terminally 
a smgle branch typically once branched above its basal cell, the branches elongate, thick-walled, rigid, 
more or less tinged with brown. The inner appendage consisting of a much smaller basal cell, producing 
be 
hrom 
150 
A nisodi 
but shorter. Perithecium 120 X 35 ti. 
Appendages, longest, 550 }i. 
e. Hope Coll. No. 344£, 319, France 
Uns i* a characterise form, occurring usually on the elytra of its host, distinguished by its long, 
apparently mvanably once-furcate outer appendage, long clear brown blunt tipped perithecium, and 
njaline, or but shghtly suffused receptacle. The figure, which reoresents one of Z tvnes on Ovh»M 
