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



10. Hymenogaster lycoperdineus Vitt. 



Hynienogaster lycoperdineus Vitt., Monog. Tub., p. 22, Tab. II, fig. 5. 



Globoso-difformis; peridio albo-fuligineo, sericeo-Ievi; carne molli elastica 

 dilute fuliginea; cellulis majusculis irregularibus, e basi ad centrum seriatim 

 directis; sporis fusiformibus, pallide fuligineis. (Tul. Fungi Hypo., p. 64.) 



No. 72, Harkness Coll. 



Under oaks, Camp Taylor, Marin County, Calif, July. 



II. Hymenogaster arenarius Tul. 



Hymenogaster arenariusTvi.., Fungi Hypo., p. 73, Tab. X, fig. 2. 



Globosus amorphus obovatus, albidus immutabilis; peridio levi vel inaequali 

 tenuissimo glabro, sicco; cellulis irregularibus, exiguis, parietibus, ferrugineis 

 sporis obrutis; septis albidis subsericeo-nitentibus, tandem aquose obscuris;, 

 sporis minutis citriformibus, in superficie inaequalibus, luteo-brunneis, guttu- 

 1am vix concentricam foventibus. 



No. 79, Harkness Coll. 



In the forest, Mt. Tamalpais, Marin County, Calif., 



March. 



12. Hymenogaster pallidas B. & Br. 



Hymenogaster pallidus B. &. Br., Ann & Mag. Nat. Hist., ist ser.. Vol. 

 XVIII, p. 74- 

 Smaller, rounded, depressed, nearly smooth, white, then dirty tan-color, 

 rather soft, within white, then yellow, then pale brown; sterile base obsolete; 

 spores lanceolate, acute, shortly pedicellate, rather rough. (Berk. Outlines 

 Brit. Fung., p. 296.) 

 No. 81, Harkness Coll. 

 Under oaks. Camp Taylor, Marin County, Calif., March. 



13. Hymenogaster caudatus, sp. nov. 



Large, globose, 5 cm. in diam., color fuscous, rough, caudate; appendages 

 springing from the base; gleba brown; veins olivaceous; spores ellipsoidal, 

 6x12 At. 



The caudal appendage is fleshy, from 1-2 cm. in length by 0.2 cm. in diam., 

 and has a bluntly pointed "terminus. The appendage is formed by an aggre- 

 gation of many rootlets which are enclosed in a delicate membranaceous in- 

 vestment. 



Type, No. 240, Harkness Coll. 



Beneath Sequoias and oaks, Mill Valley, Marin County, 

 Calif., April. 



