374 



THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E. 



terminal pore: the outer of these two projections appears, through a twist in the peritheeium, to lie on 

 the inner side. Receptacle pale yellowish with brownish shades, the deeply suffused base of the peri- 

 theeium opposite the upper half of cell III or lower; the distal portion usually so twisted and bent in 

 conjunction with the peritheeium that it crosses the latter and the appendages at a considerable angle. 

 Insertion-cell higher than the middle of the peritheeium. Appendages concolorous with the receptacle, 

 the outer simple, consisting of a basal cell, large, long, usually more or less suffused, and distally slightly 

 geniculate so that the remainder of the appendage is bent abruptly toward the peritheeium, the basal 

 cell of the inner appendage smaller, bearing a single branch on either side which may be once branched. 

 Perithecia about 100 \i long, exclusive of outgrowth, 27 ft broad. Total length to tip of peritheeium 190 //; 

 to insertion-cell 140 /l Appendages 130 Distance from tip to tip of perithecial outgrowths 45-48 [x. 



On Pericallus cicindeloides MacLeay, Paris Museum, No. 143, Tongou, Java. On inferior surface 

 of thorax. 



This curious form is chiefly remarkable for the peculiar conformation of the tip of its peritheeium, 

 the outgrowths from which are more highly developed than they are in any of the other terrestrial forms. 

 It is most nearly related to L. Sumatra, in which the tip of the peritheeium is somewhat similar, though 

 less peculiarly developed. 



Laboulbenia Sumatra Thaxter. Plate LX, figs. 13-10. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 203. Dec, 1899. 



Peritheeium small, pale amber-colored, darker and somewhat inflated below, tapering distally; 

 the tip, only, free from the receptacle, not distinguished from the body of the peritheeium, long, nearly 

 hyaline below, the lip-cells abruptly spreading, contrasting, black except about the pore and peculiarly 

 modified, the two outer broadly rounded, the two inner developing outgrowths which grow inward and 

 upward; that on the right side longer than the left, narrower and indented near the base on the inner side. 

 Receptacle concolorous with the peritheeium, paler below, marked by faint fine transverse striations. 

 Appendages concolorous with the receptacle, the outer simple, stiff, curved slightly outward, the inner 

 consisting of a basal cell smaller than that of the outer and bearing on either side a branch which may be 

 once branched at the base. Peritheeium 92 X 22 [x. Total length to tip of peritheeium 200 /u; to inser- 

 tion-cell 166 /x. Appendages about 185 fi. 



At base of anterior legs of Catascopus cupripennis Thorns., Hope Collection, No. 291 Borneo, No. 

 299 Sumatra. 



This little species is intermediate between L. tenuis and L. Javana, approaching the latter very closely, 

 though differing in the peculiar conformation of the tip of the peritheeium and the relation of the latter 

 to the receptacle, which is normal in form, and undistorted. The outer appendage also differs in being 

 straight, with a relatively smaller basal cell. 



Laboulbenia Megalonychi Thaxter. Plate LVIII, fig. 2. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 46. June, 1902. 

 Hyaline, becoming very faintly tinged with yellowish brown. Peritheeium about one half or more 

 free, slightly divergent, short, stout, tapering slightly from the broad basal half to the tip; which is, as a 

 rule, bent abruptly inward, rarely outward, or erect, rather small and well-distinguished by its long external 

 contrasting broadly blackened margin, and by a shorter broadly blackened area below the small, promi- 

 nently rounded inner lips; the lip-edges horizontal, or nearly so. Receptacle rather long and slender; 

 cells I and II of nearly equal diameter, the latter large; while between it and cell III and VI the receptacle 

 may be abruptly and strongly twisted; cells III and VI subequal, the former higher; cell IV slightly 

 smaller; cell V relatively large, the inner half or less of its inner margin free between the peritheeium and 

 the broad, thick, black contrasting insertion-cell. Outer appendage consisting of three superposed, dis- 

 tinctly brown, successively smaller cells, each nearly twice as long as broad; each of the two lower 



