218 THAXTER. 



Female indicidual pale yellowish with brown tinges. Receptacle 

 developing two fertile axes; a primary, larger and margined by the 

 basal cell; a secondary shorter, asymmetrical in relation to the pri- 

 mary, developed from and margined by an outgrowth of the sub- 

 basal cell. The axes of the usual type, the cells bearing either long 

 flexed appendages, of from seven to fourteen cells, more slender toward 

 the base, the terminal cell also often distinctly more slender; or here 

 and there short bent appendages of two cells separated by a dark 

 septum. Perithecia two or several, the stalk well developed, not 

 abruptly distinguished, the ascigerous portion straight or somewhat 

 bent distally and darker brown, subfusiform, tapering rather gradually 

 to the blunt termination; the tip and apex not distinguished. Pri- 

 mary appendage subcylindrical, two-celled (? always), the cells about 

 equal, the distal thick-walled and bluntly rounded, the basal some- 

 what darker. Perithecia 80-135 X 21-22 [x. Primary appendage 

 25 X 8 fjL. Longest appendages 250 X 8 ju> short appendage 20 n. 



On the head and prothorax of Bledius cmarginaius Say. Lawrence, 

 Kansas. 



I am indebted to Professor Alban Stewart for the host of this species, 

 which he kindly collected for me at electric light. The form described 

 was accompanied by a smaller one on the abdomen which may prove 

 a different species; but owing to the scantiness of the material it has 

 seemed best to defer its separation. It is allied to D. vulgatissimus, 

 but differs in its long stout secondary appendages which bear no 

 resemblance to the slender tapering distally attenuated appendages 

 of the last mentioned species. 



Dimorphomyces furcatus nov. sp. 



Male individual pale brownish, the subbasal cell externally nearly 

 opaque. Basal cell slightly longer than the subbasal, separated from 

 the base of the antheridium by an abrupt indentation. Appendage 

 slender, tapering, its three cells subequal in length, the tip of the distal 

 slightly enlarged. Antheridium stout, sessile, asymmetrical, bulging 

 externally, the stalk-cell well defined; the neck clearly distinguished 

 rather short. Antheridium 28.5 X 11.5 ju- Appendage 29 /x. Re- 

 ceptacle, without foot, 32 p.. Total length to tip of appendage 56 /x. 



Female individual becoming rather deeply tinged with brown. 

 Secondary axes two; one, usually slightly larger, developed directly 

 from the small basal cell ; the other from the subbasal cell ; the general 



