22 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Eumonoicomyces Papuanus nov. sp. 



Nearly or quite hyaline. Basal cell of the receptacle small, usually 

 triangular ; the subbasal cell terminating in a short appendage distin- 

 guished by a dark basal septum, and sometimes once branched. The 

 fertile branch not differentiated from the receptacle, consisting of three, 

 rarely two cells similar to the subbasal cell, obliquely superposed; the 

 lowest bearing normally a short, hyaline or faintly brownish, erect, sterile 

 appendage, similar to that of the subbasal cell ; the middle cell bearing a 

 single antheridium, and the upper an antheridium and a stalked perithe- 

 cium. The autheridia rather stout, broader distally ; the stalk-cell small 

 and short; the antheridial cells very numerous — thirteen to fifteen 

 usually visible in optical section — the terminal appendages of the usual 

 type, short or seldom longer than the antheridium. Perithecium rather 

 long and sometimes slender ; the venter inflated ; the distal portion 

 tapering gradually and symmetrically to the blunt, nearly truncate apex ; 

 the rather short tip hardly distinguished above a slight elevation ; the 

 stalk-cell variable in length, rather slender, seldom more than half as 

 long as the perithecium ; the basal cells rather large and broad, not dis- 

 tinguished from the venter. Spores about 35 X 3/x. Perithecia 80- 

 120 X 32-40^, the stalk-cell 35-75 x 15^. Antheridia including 

 stalk-cell and without appendages 35 X 18 fi. Total length to tip of 

 perithecium 150-290^. 



On all parts of a small pale species of Oxytelus. Ralum, New Pome- 

 rania. Berlin Museum, No. 1011. 



Eumonoicomyces Californicus nov. sp. 



Resembling E. Papuanus in general habit. Basal cell of the recep- 

 tacle short, stout, geniculate, with a dark brown suffusion extending from 

 the foot half-way up its convex margin ; the subbasal cell bearing distally 

 a long appendage consisting of a short hyaline basal cell, separated by a 

 dark septum from a second cell above it, which is dark brown and bears 

 two long, slender, one-celled, erect branches, brown below, becoming 

 hyaline distally. The fertile branch not distinguished from the receptacle 

 and consisting of three, sometimes more, very obliquely superposed cells 

 similar to the subbasal cell : the lowest bearing a sterile appendage like 

 that which terminates the receptacle; the middle cell usually bearing an 

 antheridium, and the npper an antheridium and a perithecium. Anther- 

 idium short-stalked, with a more or less well-defined median constriction, 

 resulting from an inflation of the cells which bear the terminal append- 



