388 



Til XTER. 



MONOGRAPH OF THE LABOULBEXIACE^. 



brown, the basal cell tinged with smoky brown, cell II abruptly broader and long, all the cells except cell 

 I more or less conspicuously marked by short transverse striae, cell V bulging on the inner side and carrying 

 the black insertion-cell out free from the neck of the perithecium. Outer appendage consisting of an 

 erect series of about six obliquely superposed cells, the lower becoming nearly opaque, the basal one larger 

 and darker, opaque externally and below; each cell bearing externally a single simple branch, the branches 

 consisting of a basal portion of mostly three short cells prominently constricted at the blackish septa, and 

 a terminal portion (unicellular (?), brownish): the inner appendage consisting of a basal cell which gives 

 rise to a series of superposed cells on either side, like that of the outer appendage and similarly branched, 

 one of the series in the types much shorter than the other (two and four celled): the branches all erect, 

 closely apposed, more or less suffused with brownish. Perithecia 280 X 45-55 ji. Total length to tip 

 of perithecium 680 fi\ to insertion-cell 420 /<; greatest width 75 /*. Appendages (broken) 55 /i. 



On Galcrita unicolor Dej., Brit. Mus. No. 516, Amazon River. Inferior surface of prothorax. 



Two specimens only of this well marked species one of which is badly broken, have been examined. 

 It bears some resemblance to L. melanotheca in general appearance; but the appendages at once dis- 

 tinguish it, not to mention other points of difference. The antheridia are broken in both specimens but 

 appear to have been solitary. The perithecial tip, represented in fig. 17, is drawn from the second 

 broken specimen, and appears to represent a view at right angles to that shown in fig. 16. It is possible, 

 however, that this may have been somewhat abnormally developed, as the specimen is evidently old. 



Laboulbenia speciosa Thaxter. Plate LXII, fig. 5. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 201. Dec, 1899. 



Perithecium free, long and narrow, somewhat swollen at the base, the inner half or less hyaline, the 

 outer dark clear blackish brown; the basal wall-cells forming a short hyaline stalk narrower than the 

 ascigerous portion; the tip hardly distinguished, bluntly rounded, slightly oblique outwardly, black, 

 hyaline about the pore. Receptacle very elongate, hyaline except cells IV and V which are tinged with 

 amber-yellow, indistinctly punctate with short transverse stria? except cell I ; cell II very elongate. Inser- 

 tion-cell black, free from the stalk of the perithecium through the slight enlargement of cell V. Outer 

 appendage consisting of a series of five to eight cells superposed not very obliquely, the basal one larger 

 tinged with brown below, the rest hyaline; all the cells producing externally a single simple branch, the 

 lower three, sometimes two, cells of which are mostly not longer than broad, constricted at the black 

 septa, distally faintly brownish yellow; the inner appendage consisting of a basal cell which bears on 

 either side a branch consisting of a series of about four cells, like that of the outer appendage, and bear- 

 ing similar branches in a similar fashion; the three series quite distinct from one another. Perithecium, 

 including its short neck, about 285 X 56 Total length to tip of perithecium 750-925 /i; to insertion- 

 cell 450-650 /i. Appendages about 200-280 p. 



On Galcrifa unicolor Dej., Brit. Mus. No. 517, Brazil. On inferior surface of the prothorax. On 

 Galerita sp. indet., Bahia, Brazil, at base of mid legs: Berlin Museum No. 962. 



Four specimens of this very distinct and beautiful species have been examined, none of which show 

 any perceptible variation from the type. The antheridia in all are either broken, or so disorganized that 

 it is not possible to describe them in detail. They appear, however, to have been solitary, colorless, and 

 unusually long. Although the bases of the branches of the appendages are usually three-celled (the cells 

 distinguished by blackened septa) the upper ones occasionally include but two. The species is perhaps 

 as nearly allied to L. ancjularis as to any of the other species, but its black and white perithecium is in 

 itself sufficient to distinguish this apparently rare form from other known species. 



Laboulbenia corniculata Thaxter. Plate LXII, fig. 17. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII. p. 31. June, 1902. 



Hyaline becoming pale yellowish. Perithecium becoming tinged with brown, usually bent inward 

 from the base at an angle to the axis of the perithecium, sometimes at right angles (the appendages and 



