246 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



2. Hymenogaster Setchellii, sp. nov. 



Minute, 1.5 cm. in diam.; color white turning to brown, subglobose, 

 smooth; gleba buff, elastic; cells large, sinuous; sterigmata elongated; spores 

 citriform, guttulate, brown, 7X9/Z. 



Type, No. 165, Harkness Coll. 



Under Vaccinium, beneath vegetable humus, Mt. Tamal- 

 pais, Marin County, Calif., April. 



Named in honor of Professor William A. Setchell, of 

 the University of California. 



3. Hymenogaster utriculatus, sp. nov. 



Plate XLII, Figs. 6a-6/. 



Large, roundly gibbous, 2 cm. in diam.; color chocolate-brown; smooth, 

 with slightly concave depressions upon the surface; gleba brown; cells gyrose 

 or subrotund; septa fleshy, elastic, fibrose; spores ovoid, upon a cylindrical 

 pedicel 3 At in length, inclosed within a winged utricle, color citron-brown, 



6x 10 [M. 



Type, No. 244, Harkness Coll. 



Among Sequoias and oaks, Mill Valley, Marin County, 

 Calif., July. 



The spores of the Hymenogaster are frequently inclosed 

 in a semitransparent utricle; such investment is, however, 

 so far as the writer has observed, uniformly saccate or sub- 

 rotund in outline. 



4. Hymenogaster ruber, sp. nov. 



Oblong, 2 cm. in diam., rugose; peridium pale red, thick, fleshy; gleba 

 brown, septa white; cells minute; spores briefly obovate, rough, 6x8 ^t. 



Type, No. 248, Harkness Coll. 



In the forest. Mill Valley, Marin County, Calif., July. 



5. Hymenogaster globosus, sp. nov. 



Minute, globose, i cm. in diam.; color dirty white; gleba fuscous or nearly 

 black; cells irregular; spores ellipsoidal, 6 x 12 [i. 



Type, No. 246, Harkness Coll, 



In damp ground, beside a rivulet. Mill Valley, Marin 

 County, Calif., July. 



