THAXTER. — LABOULEENIACE.E. 103 



DlCHOMYCES IN^QUALIS, nOV. Sp. 



Receptacle as in D. furciferus, its fork-like projections prominent 

 and indistinctly septate, the distal row of cells bearing a single peri- 

 theciuni but symmetrical except that the submedian cell, above which 

 a second perithecium arises in D. furciferus, is much reduced in size. 

 Appendages ten to twelve, one at the base of each antheridium, two 

 above the median cell of the distal row, and three to four borne one 

 from each of the three to four cells of the distal row external to the 

 submedian cells, all arising as in D. furciferus. Perithecia large, 

 slightly inflated towards the base or subcylindrical, tapering abruptly 

 at the extremity to a subtruncate apex destitute of appendages. 

 Spores 26 X 3.5 fx. Perithecia 100 X 25 p. Receptacle, length to 

 base of perithecium 92 p ; length to tips of lateral forks 110-130 p; 

 greatest breadth 50-60 p. Total length to tip of perithecium 180- 

 190 p. 



On Philonthus debilis Grav. Kittery Point, Maine, and TVaverly, 

 Massachusetts. 



This species occurs sometimes in company with D. furciferus on 

 the abdomen, more rarely on the legs and thorax of its host. It is at 

 once distinguished by its solitary perithecium, which is destitute of the 

 ear-like appendages peculiar to the last named species. The presence 

 of a single perithecium necessitates a modification of the generic diag- 

 nosis in this respect, but despite the absence of the usual pair, which 

 seems to be invariable, the bilateral symmetry of the plant is other- 

 wise maintained. More abundant material of D. furciferus shows the 

 presence of an appendage placed beside each antheridium, a character 

 also found in both the new species just described. 



Heima.tomyces aurantiacus, nov. sp. 



Pale straw-colored, the cell contents including numerous rather 

 bright orange granules or oil globules. Perithecium, exceeding the 

 tip of the receptacle by from one fifth to one quarter of its length, 

 small, slender, the tip usually curved outwards, the lips rather prom- 

 inent. Receptacle slender, the basal cell suffused with brown below, 

 the sub-basal cell small and flat, the two succeeding cells elongate, the 

 outer shorter and continued above by an unusually large basal cell of 

 the perithecium : distal portion of the receptacle as in H. bm-ealis com- 

 posed of three cells, the two lower very long and narrow, subtriangu- 

 lar, obliquely superposed, their lower extremities nearly touching the 

 sub-basal cell. Perithecium 50 X 14-15 p. Total length to tip of 



