CHITONOMYCES AND RICKIA. 19' 



along the corresponding margin of the perithecium, which is thus 

 united on this side to a series of usually five or six cells, some or all of 

 which may each cut off an appendiculate cell ; the terminal one either 

 bearing an appendage directly; or cutting off a large appendiculate 

 cell distally, which lies just helow the apex of the perithecium. Peri- 

 thecium relatively long and narrow, its anterior margin one half to 

 almost wholly free; the tip distinguished ; the apex ending in a slightly 

 bent, free, bluntly pointed projection formed by one of the inner lip- 

 cells. Spores 25-28 X 3-4 m- Perithecia 36-50 X 10-16 m- Total 

 length very variable, 100-1000 X 10-20 //. Appendages 18-20 X 

 3.5 ^JL. 



On Passalus ilascala Perch., (Type), No. 2068 and Neleides antil- 

 larum Arrow, No. 2069, Grand Etang, Grenada, B. W. I. On several 

 passalline beetles; No. 2162, Guatemala, M. C. Z. ; No. 2163 and 2165, 

 Guatemala (Kellerman); No. 2166, Yucatan, M. C. Z.; No. 2167, 

 Polvon, Nicaragua. 



This species differs from all other known forms which possess a 

 similarly pointed perithecium, in developing no axes which are in- 

 determinate and sterile; every axis, whether primary or secondary, 

 finally ending in a perithecium. It is extremely variable in habit; 

 typically simple; but when growing luxuriantly, tending to branch 

 copiously and to become greatly elongated. 



Rickia bifida nov. sp. 



Wholly hyaline. Receptacle consisting of a short basal stalk- 

 portion, including a larger basal cell and usually three smaller sub- 

 equal cells, the upper two paired; the remainder of the main axis 

 above this short stalk-portion and a branch near its base, though 

 occasionally subject to abnormal branching, usually form two broad 

 simple upcurved, subsymmetrical, slightly tapering, often nearly sim- 

 ilar, elongate slender divisions with indeterminate apical growth ; the 

 cells of which are biseriate, mostly several times longer than broad, 

 some, both of the inner and outer series, cutting off appendiculate cells; 

 the appendages thus arising at irregular intervals, of the usual type, 

 appressed or but slightly divergent, cylindrical or slightly tapering: 

 the primary appendage small, borne on a large straight slightly in- 

 flated two-celled free base, arising from the second outer cell of the 

 axis-division, the basal cell three times as long as the terminal. The 

 perithecium arising at or near the base of the axis-division; mostlv 



