Box.— Vol. I.] HARKNESS—CALIFORNIAN HYPOGMI. 26g 



Beneath Sequoias, Mill Valley, Marin County, Calif., 

 July. 



The spores are often seriate, at times, however, nearly 

 biseriate. The fungus resembles I^. conglomeratus B. & Br., 

 but has a much larger spore. 



75. Pachyphlceus ligericus Tul. 



Pachyphlceus ligericus Tul., Fungi Hypo., p. 133, Tab. XIV, Fig. 5. 



Exiguus verrucosus et nigricans; sporangiis ovato-globosis; sporarum ver- 

 ruculis crassis obtusisque. 



No. 44, Harkness Coll. 



Under pine trees in sandy soil, Towles, Placer County, 

 Calif., May. 



Myrmecocystis, gen. nov. 



Fungus minute, irregular, lobed or gibbous, verrucosa; gleba chambered 

 by an irregularly stellate cavity not communicating with the exterior; asci 

 subglobose or somewhat elongate, 8-spored; spores rough. 



76. Myrmecocystis cerebriformis, gen. et sp. nov. 



Plate XLV, Figs. 28a-28<?. 



Minute, i cm. in diam., color white or pale citron, lobed, verrucose, 

 enclosed; gleba white, marked by an irregularly stellate-formed cavity with- 

 out regular lines, the structure composed of large and uniform cells; asci 

 subglobose or slightly elongated, 8-spored; spores globose, 24 /x in diam. 



Type, No. 25, Harkness Coll. 



In sandy places under oaks, Wire Bridge, Placer County, 

 Calif., May. 



77. Myrmecocystis Candida, sp. nov. 



Plate XLV, Figs. 29a-29^. 



Minute, 0.5 cm. in diam., color white, irregular, lobed, verrucose; gleba 

 irregularly chambered; asci subglobose, 8-spored; spores globose, rough. 



Type, No. 18, Harkness Coll. 



