THAXTER. — NEW LABOULBENIACEAE. 15 



prolongation of the apex on the inner side, and by a relatively long 

 straight erect slightly tapering subtending terminal unicellular process. 

 Spores about 20 X 2 /*. Perithecia 100 X 22 /x, the terminal process 18 /*. 

 Secondary receptacles, together, 55 X 18 /*. 



On the antenna of a small brown wingless roach taken under stones 

 and bark near the mouth of the Mammoth Cave, Kentucky ; Mus. Comp. 

 Zool., No. 1370. 



Herpomyces Zanzibarinus nov. sp. 



Hale individual consisting of four cells, the distal one furnished with a 

 sharp colorless terminal spine and a small blackish subterminal process, 

 both of which become pushed to one side by the development of one, or 

 sometimes two, sessile antheridia ; the subterminal cell somewhat larger, 

 sterile, or producing an antheridium laterally. Total length 28 X 6.5 /i. 

 Antheridia 25 p. 



Female individual colorless. Primary receptacle surmounted by two 

 sterile cells, the upper terminated by a sharp spinous process subtended 

 by a blackish process, as in the male : the subbasal cell apparently 

 divided at least once, the two (or more ?) cells producing fertile branches 

 from which, normally, two few-celled, paired, compact secondary recep- 

 tacles are produced ; each of which bears a single perithecium, the cells 

 rather irregular, about five or six in number, subhorizontal in position, 

 without characteristic modification. Ascigerous portion of the perithecium 

 relatively stout, inflated on its inner side, almost twice as long as the 

 distal portion, which tapers from it rather abruptly : distal portion curved 

 inward abruptly at the pointed tip, which diverges from an erect blunt 

 unicellular process which subtends it, at an angle of more than 90°. Peri- 

 thecium, including base, to tip of terminal process, 125 X 28-32 /x; the 

 process 10 /x long. The pair of fertile receptacles together about 30-35 

 X 45 fi broad (horizontally). 



On the antenna of a large black wingless roach, Zanzibar, Africa ; 

 Mus. Comp. Zool., No. 1354. 



Herpomyces forflcularis nov. sp. 



Male individual minute, consisting of four superposed cells, the three 

 upper subequal, nearly round, constricted at the septa, the distal one 

 terminated by a short bluntly pointed appendage resembling a minute 

 foot, which is commonly turned to one side by the development later- 

 ally from the same cell of a single slender antheridium. Total length 

 18 X 5fx. The antheridium about 35 p. 



