THAXTER. - MONOGRAPH OP THE LABOULBENIACE^E. 



251 



Ceylon, British Museum, Nos. 377-378: on P. redangulus Sharp from Japan, Sharp Coll., Xos. 1123 

 and I 131. 



The Scottish and Japanese specimens, as well as many of those from Fresh Pond, were associated 

 With a second form similar in size and general appearance, except that the fork-like projections were 

 less prominent, or undeveloped, and that the pcrithecia were relatively larger and without the charac- 

 teristic auricles. This same form without auricles has also been found repeatedly, unaccompanied !>v 

 the auricled form, on hosts from Fresh Pond, and has also been examined from the following sources: 

 on P. cinctipennis Fauv., Sharp Coll., No. 1173; and on P. discoidetlS from the Canaries, British Museum, 

 No. 401; as well as on Pliilonlluix sp., No. 493, from Balthazar, Grenada, West Indies. Variations 

 of this simpler form are illustrated in Figs. 10-12, Plate XXXI, and although I was at first inclined to 

 (•(insider it distinct from both I), furciferus and D. Cafianus, to which it is too closely allied, I have con- 

 cluded to designate it, provisionally at least, as a variety of the former, in view of the dimorphism which 

 certainly occurs in various other species of the genus. Of the figures in the accompanying plate, fig. 12 

 represents the largest individual seen, and is taken from the Abyssinian material, while the two others 

 were collected about Fresh Pond. Other variations occur which resemble D. furciferus more closely in 

 showing a more marked development of the fork-like projections of the middle tier. 



Dichomyces Belonuchi Thaxter. Plate XXXIII, figs. 6-9. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 27. June, 1901. 



Receptacle relatively large and long: the distal tier relatively small, consisting of from eleven to 

 thirteen short cells, slightly suffused, the median cells little longer than the rest, the series forming slight, 

 rounded, sometimes almost obsolete lateral projections on either side of the pcrithecia: the basal cell 

 small, partly transparent: the lower and middle tiers not distinguished, uniformly opaque; a portion of 

 the middle cell, and sometimes the tips of other cells in the middle tier, more or less translucent, the 

 marginal cells ending in a light rounded prominence below the base of the antheridium. Pcrithecia 

 normally two, evenly suffused with pale reddish brown, rather long and slender, tapering throughout, 

 the conformation of the lip-cells much as in D. furciferus. Spores about 30 X3/i. Perithecia 75-80 X 

 18-20 a. Receptacle 108-126 X 54-58 /x. Total length to tips of perithecia 185-200 /<. 



( )n the abdomen of Bclouuchus fuscipes Fauvel. New Guinea. Sharp collection, No. 1090. 



This species is most nearly allied to D. furciferus, from which it is distinguished by its longer more 

 slender perithecia, and the almost complete opacity of the two lower tiers, the middle one producing in- 

 conspicuous rounded projections in place of the long fork-like outgrowths characteristic of its ally. 



Dichomyces vulgatus Thaxter. Plate XXXI, figs. 5-9. 



Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 424. April, 1900. 

 Receptacle variable, typically short and stout, the basal cell small squarish hyaline; the lower tier 

 externally opaque, except the whole or the middle of the median cell, or only its upper end, the opaque 

 margin divergent, extending above the base of the second tier, the blackened margin of which is con- 

 tinuous with that of the first tier; sometimes, like it, divergent, more often abruptly less divergent or 

 even erect, extending upward to form on either side free fork-like, usually opaque, sometimes hyaline 

 projections which may extend to a point somewhat above the middle of the perithecia or may be almost 

 obsolete; the three middle cells of the middle tier usually more or less conspicuously punctate below, 

 with transversely elongated blackish brown spots: the antheridia normally placed, unusually long and 

 large, pointed, with two or three short, inconspicuous normal appendages placed one behind, the rest 

 external to it. The upper tier distally concave, consisting of from fifteen to twenty-one cells, producing 

 normally four sometimes two perithecia associated, as usual, with short stout typical appendages. Peri- 

 thecia erect or slightly divergent, straight, dimorphic: stouter and longer, and ending in a single blunt 

 tip; or rather short and stout, pale reddish amber-brown, the lower half or third often abruptly lighter, 

 tapering to a blunt tip, which bears on either side a short, stout, often slightly recurved ear-like outgrowth 



