44 Natural History Bulletin. 



23. Agaricus cervinus. — Schaeff. 



Pileus flesh}', campanulate, then expanded; at first smooth 

 then more or less fibrillose, brown or sooty; lamellae, free 

 crowded, white then flesh-colored; stipe solid, sordid white 

 with adherent blackish fibrils. 



Height 4 '-6'. Pileus 2 '-3'. 



Common during the entire season, specimens frequently so 

 late as to be frozen with the ground at approach of winter. 

 Lignatile. Frequently seen on the decaying sawdust about ice- 

 houses. 



Subgenus Entolonia. 



Pileus somewhat fleshy, the margin incurved; stipe fleshy 

 or fibrous, soft; lamellae sinuate attached behind or seceding. 

 — Morgan. 



24. Agaricus rhodopolius. — Fr. 



Pileus somewhat fleshy, campanulate. then expanded, con- 

 vex, margin wavy, in color pale brown, hygrophanous; lamel- 

 lae adnate, sinuate, white then pale roseate; stipe hollow, equal, 

 white, pruinose above. 



Height 4 '-5'. Pileus 2 '-3'. August-September. 



A very handsome species, not common: characteristic of 

 moist shades in undisturbed woodlands. 



The preceding list of species belonging to the first tw^o 

 series of the great genus Agaricus must be regarded as largely 

 preliminary. No species has been admitted which has not 

 been confidently identified, generally after having been col- 

 lected again and again for successive years. The description 

 of our remaining agarics and of the species belonging to the 

 closely related genera, Copriuus and Cortinarius, will occu- 

 py our attention in the next number. 



Thanks are due Dr. Chas. H. Peck, of Albany, N. Y.. and 

 to Mr. J. B. Ellis, of Newfield, N. J., for assistance in deter- 

 minations; and to Miss M. F. Linder of Iowa City for con- 

 stant assistance as a collector. 



