340 



THAXTER. — 



MONOGRAPH OF THE LABOULBENIAC E.E. 



Laboulbenia pallida Thaxtcr. Plate L1V, figs. 8-9. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 193. Dec, 1899. 



Perithecium almost wholly free from the receptacle, colorless becoming faintly yellowish, bent (nit- 

 ward at a considerable angle to the axis of the receptacle; the prominent tip abruptly distinguished, coarse 

 lipped, hyaline except for an inner purplish-black suffusion. Receptacle concolorous with the perithe- 

 cium, the basal cell large and broad, longer than cell II, the cells of the distal portion relatively small, 

 cell III roundish, about as large as cells IV and V together. Insertion-cell thick, contrasting purplish 

 black. ( )uter appendage consisting of a basal cell, rectangular or distally enlarged and producing usually 

 two, sometimes but one branch, the branches once or even twice branched, the ultimate brarichlets some- 

 times very elongate and attenuated: the inner appendage consisting of a basal cell much smaller than 

 that of the outer and sometimes lateral in position, bearing one or two branches which may be short or 

 elongate like those of the outer appendage. Perithecia 70 X 25 p.. Total length to tip of perithecium 

 110-175 /<; to insertion-cell 85-120 p. Appendages, longest 285 p. 



On the elytra of a carabid allied to Harpalus, Paris Museum, No. 94, Java. 



This small pale species suggests L. lepida, but is quite distinct. The broad spreading tip of its 

 perithecium is peculiarly differentiated, and the latter normally projects at an angle to the axis of the 

 receptacle which is coincident with that of the appendages, as in L. Pscudomasci, a species otherwise 

 quite different. 



Laboulbenia Aerogenidii Thaxter. Plate L1V, figs. 4-5. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 155. Dec, 1899. 



Form short and stout. Perithecium suffused with smoky brown, translucent, becoming distally 

 rather abruptly subhyaline, contrasting with the abruptly differentiated tip; the latter black-brown, 

 opacpie or nearly so below, the lip-cells usually symmetrical, rounded, spreading broadly and rather 

 abruptly, the lip-edges translucent; sometimes asymmetrical with the inner lip-cells, only, prominent 

 and the pore external: the wall-cells with a slight spiral twist. Receptacle hyaline below, becoming 

 more or less tinged with smoky brown above, especially cells III and IV and the region immediately below 

 the perithecium; the suffused parts indistinctly punctate. Appendages consisting of two basal cells; 

 the inner producing two short branches on either side, which usually bear a rather compact cluster of 

 antheridia; the outer giving rise to from two to four branches placed antero-posteriorly with more or 

 less regularity, the outer for the most part soon broken and deeply blackened, the rest especially the 

 outermost more or less suffused with brown, commonly twice branched, above the basal and subbasal 

 cells, elongate though for the most part broken. Total length to tip of perithecium 200-220 p. Ap- 

 pendages 200-250 p. Perithecium 110-120 X 35- 45 p, the apex reaching a width of 35 p. 



Along the margins of the elytra of /Erogcnidion Bcdcli Tsch., Mon-Pin (China?), Paris, No. 179. 



Although closely allied to L. filijera and L. intermedia, this species is strikingly unlike any other 

 member of the genus by reason of the remarkable conformation of the spreading tip of the perithecium, 

 which is rendered still more prominent by its opacity. The outer branch of the outer appendage is almost 

 invariably destroyed in mature individuals; but its form is shown in the young specimen represented in 

 fig. 5. 



Laboulbenia intermedia Thaxter. Plate LIV, figs. 2-3. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 181. Dec, 1899. 

 Perithecium about three fourths free, suffused with yellowish brown deeper below the apex, rather 

 stout, slightly inflated, the apex very broad, rounded, often almost flat, short, wholly blackened, the lips 

 indistinguishable, the wall-cells with a slight spiral twist. Receptacle short and stout, at first hyaline 

 below, becoming concolorous with the perithecium. Outer appendage consisting of a rather large sub- 

 isodiametric cell bearing distally two or three antcro-posterior branches, once or twice branched, the 

 external branehlets brown, basally deeply blackened. Inner appendage consisting of a basal cell similar 



