NEW LABOIILBENIALES. 717 



genus and is distinguished by its straight receptacle, greatly developed 

 perithecial stalk-cell, stout appendage in which a spur from the fourth 

 cell replaces all the lower branches; while the upper are more or less 

 abortive; in its solitary antheridium and entirely normal perithecium. 

 A small number of very mature individuals which have been examined, 

 are much larger than the others, darker; the protrusions of the cells 

 below the perithecium, as well as the differentiation of its wall-cells, 

 being much more conspicuous. One individual examined is associated 

 "with a simple functional male individual consisting of two cells, ter- 

 minated by an antheridium. Other individuals, however, removed and 

 still adherent, show that both spores of a pair may develop normally. 



Laboulbenia Sapromyzae nov. sp. 



Straight and rather slender, the perithecium and outer appendage 

 divergent; cells III and IV replaced by a single cell. Basal and sub- 

 basal cell hyaline or slightly soiled, the basal usually slightly longer, 

 the subbasal abruptly somewhat broader; cells III-IV soiled with 

 dirty olivaceous brown, inconspicuously striate-punctate, abruptly 

 prominent below the insertion-cell ; cell V relatively long and narrow, 

 its inner margin distally free, so that the thick olive-black insertion- 

 cell is quite free; the basal cells of the outer and inner appendages 

 free, divergent; the latter obliquely terminal, small, pale, usually 

 bearing a pair of short, olive-brown antheridial branchlets right and 

 left; the antheridia single, large, olivaceous: the outer appendage 

 terminal, consisting of usually three cells deeply suffused with olive 

 brown, usually terminated by a pair of branchlets; the two lower cells 

 each producing distally on the inner side a branch, the lower some- 

 times twice branched, but usually two celled with a pair of terminal 

 branchlets; while the upper bears a similar pair, or only one, directly 

 from its basal cell ; the branchlets, of which there may thus be seven 

 or less, rather stout, nearly uniform, blunt distally hyaline or paler, 

 Ijdng in a radial plane, some of them usually characteristically curled 

 or curved outward, distally. Perithecium dark translucent olive 

 brown, finely granular, but slightly asymmetrical, narrow, very slightly 

 inflated, tapering evenly from below the middle to the broad blunt 

 apex, the upper margin of which usually presents a small median 

 rounded elevation; the wall-cells describing a quarter of a turn from 

 right to left, so that the anterior or posterior side is normally presented, 

 the lateral view, which is not often seen, being of the more normal 



