702 THAXTER. 



but is distinguished from the former by the presence of a well developed 

 stout rhizoid, and by the conformation of its perithecial termination; 

 while from the latter it differs in its greatly elongated appendages and 

 simple rhizoid, as well as in other details. A minute primary foot, 

 which forms during the early germination of the spore, usually persists 

 beside the entering rhizoid. The male is very thin-walled and difficult 

 to see from the fact that it is perfectly hyaline. It does not appear to 

 enter the host, but the basal cell spreads to form a small sucker like 

 attachment. 



Laboulbenia clavulifera nov. sp. 



Erect, straight or slightly bent between the basal and subbasal 

 cells. Foot normal, well developed; basal cell somewhat longer than 

 the subbasal, and separated as a rule by a slightly oblique septum; 

 the subbasal slightly broader distally, pale dirty brownish; the basal 

 nearl}- hyaline; cells III and VI subequal and opposite, cells IV and V 

 nearly equal, or cell five narrower and slightly longer. Insertion- 

 cell normal, well developed, nearly black. Base of outer appendage 

 slightly oblique, the axis deep brown with the septa darker, erect 

 beside the perithecium ; consisting of three cells increasing in diameter 

 distally, and bearing a terminal tuft of short irregularly developed 

 branches. Basal cell of the inner appendage small, pale, bearing a 

 short one-celled branch on either side, usually terminated by two large 

 brown antheridia. Receptacle above cell II concolorous with it, 

 the cells above cell VI not clearly distinguished. Perithecium wholly 

 olivaceous, somewhat paler toward the base, the venter slightly 

 inflated, its base about opposite the insertion-cell; tapering to the 

 blunt apex, the wall-cells describing a half turn, so that the view of the 

 apex is either anterior or posterior, and appears symmetrical, with 

 the lateral lips forming prominent rounded projections on either side 

 of a somewhat higher median elcAation. Spores about 34 X 2.5 /x. 

 Perithecia 70-88 X 18 ^u. Appendage to tips of branchlets 70 m; 

 the axis 42 X 12 m, distally. Total length 150-225 fx. 



On the legs of a species of Physogcnia ?. No. 2748. Kamerun, \V. 

 Africa. 



Although this species has the typical structure of Lobovlbcnia, it 

 appears to be most nearly related to L. pccthnilifcra, which occurs on 

 the same host, but has the structure of Ceraiomyces. The stout, 

 clavate, deeply colored axis of the outer appendage, which is erect and 

 bears a terminal tuft of short ill developed branchlets, gives it a 

 characteristic appearance. 



