28 THAXTER. 



flattened, or irregularly rounded; the wall-cells more or less con- 

 spicuously prominent, except distally ; the outer rows containing from 

 twenty-seven to fifty cells, the inner from twenty-three to forty-one. 

 Spores slender, 50 X 3 /i. Perithecia 200-450 X 40-60 m- Appendage 

 about 40-60 /j., the branches about 120-150 /z. Receptacle 25-75 X 

 40-60 M- Total length 230-550 fx. 



On the inferior margin of the abdomen of GnjUofalpa Africana Palis., 

 Samarang, Java. 



This species is very clearly distinguished by its short receptacle and 

 more or less indefinitely elongated perithecium, the basal cells of which 

 are more clearly defined than in some other species of the genus, and 

 form an irregular cell-group at the junction of the appendage and 

 receptacle. The appendage, though it bears numerous erect branches 

 in a tuft, often shows a copious formation of antheridial cells, the 

 arrangement of which is very irregular as compared with that seen in 

 the type species. It is most nearly related to T. acuminatus. 



Tettigomyces acuminatus nov. sp. 



Nearly colorless. Receptacle stout, consisting of six to eleven flat- 

 tened superposed cells often paired, followed by three or four which are 

 once or twice longitudinally divided, the distal tier always of three 

 cells, two of which are smaller, isodiametric and subtend the base of 

 the perithecium ; while the third, which is nearly twice as large, sub- 

 tends the appendage; the cells on the perithecial side, especially just 

 above the foot, more or less prominent singly or in pairs, the opposite 

 margin usually even. Appendage consisting of eight or more flattened 

 cells from which a cell is separated on the inner side bearing a furcate 

 branch; the antheridial cells inconspicuous or lacking. Perithecia 

 rather stout, curved slightly outward, considerably and somewhat 

 asynnnetrically inflated, tapering rather rapidly to the tip, which is 

 abruptly distinguished above the rounded termination of the rest of 

 the perithecium; tapering, relatively long, one or all four of the lip- 

 cells prolonged to form a slender sharp process; wall-cells hardly 

 prominent, except sometimes near the base on the inner side; the outer 

 rows consisting of from twenty-four to twenty-six cells, the inner of 

 twenty-two to twenty-four. Perithecia 150-200 X 40-60 fx. Spores 

 (in perithecium) 40-45 X 3.5 m- Receptacle SO X 40 ix. Total length 

 to tip of perithecium 250-310 /x. 



