NEW LABOULBENIALES. 213 



wall near the base, are transluoont brown; the eel! straij^ht, long- 

 obconical, or cornucopia-sliaj)i'il. Appendage slij^htly (liver<;ent, the 

 stalk-cell somewhat broader than lon<;-, pale brownish, the walls of the 

 upper half deep brown; the antheridial segment squarish, slightly 

 narrower, uniform yellowish brown, externally slightly convex; the 

 antheridial region usually external and lateral (right); the rest of the 

 appendage consisting of from five to eight flattened concolorous cells, 

 separated by constrictions and darker brown septa, one to three of the 

 terminal cells producing short simple stout branches, of which there 

 may be as many as six, two or three of which may arise side by side 

 from the terminal cell. Perithecium and its stalk erect, or somewhat 

 divergent, similar to that of the preceding species, but longer; the 

 basal cells clearly defined, yellowish, narrower than the base of the 

 concolorous perithecium; the venter symmetrically inflated, the junc- 

 tion of its wall-cells with those of the tapering neck portion indicated 

 by a brownish shade; the tip rather well differentiated, relatively long, 

 tapering very slightly; the apex very short, rounded and pale. Spores 

 about 39 X 3 m- Perithecium 55-70 X 18-20 m- Stalk and basal 

 cell region about 50 X 18 ii. Main axis of appendage 50-70 ix, longer 

 terrninal branches 42 X 7/x; antheridial segment 17 X 19 ju. Total 

 length to tip of perithecium 125-175 /x. Receptacle (50 X 28 jx, 

 distally X 8 /x at base, the subbasal cell, average 50 /x long. 



On various parts of Trogophlocus sp.. No. 1901, Corral, Chile. 



This species, which is much larger than the two preceding, is more 

 nearly allied to C. Twgophloei Speg., from which it differs in its elon- 

 gate opaque subbasal cell, and in the characters of its appendage. 

 The symmetrical form of the perithecium is similar, but the tip is less 

 abruptly distinguished and relatively stouter. The host was found in 

 wet refuse caught against stones in a brook. 



Cantharomyces Magellanicus nov. sp. 



Basal cell nearly hyaline, about twice as long as broad separated 

 by a slight abrupt constriction from the subbasal; which is short, 

 abruptly three or four times as broad, irregularly cup-shaped, brownish 

 yellow, deeper brown below and externally where it is strongly convex 

 and separated by a constriction from the stalk-cell of the appendage; 

 which is somewhat broader than long, externally strongly convex, 

 concolorous, a deeper brown area let into the distal walls: antheridial 

 segment abruptly somewhat narrower, externally prominent above, 



