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



90. Tuber (Sphaerotuber) Calif ornicum, sp. nov. 



Plate XLV, Figs. 3ia-3i^. 



Subglobose, 1.5 cm. in diam., ochraceous, smooth; gleba firm, brown; 

 veins conspicuous, not plentiful; asci subglobose, not stipitate, 3-4-spored; 

 spores globose, large, brown when mature, reticulate-aKeolate, 42 ji in diam., 

 about ten alveoli on the circumference. 



Type, No. 150, Harkness Coll. 



Under oaks beneath vegetable humus upon a hillside, 

 Laundry Farm, Alameda County, Calif., March, 



This species is especially notable for the magnitude of 

 its spore. 



91. Tuber (Oogaster) Carol! Bonnet. 



Tuber (Oogaster) Caroli Bonnet, Rev. Mycol., Ann. VII, 1885, p. 8. 



Globosum, brunneo-ferrugineum, verrucis plerumque 5-goniis asperatum, 

 basi squamiformi, eximia instructum; gleba firma, sicca, pallide luteola, dein 

 luteola, venis albis, numerosis, latissimis, e fungi basi exorientibus, gyrosis 

 marmorata, lineis obscuris destituta; ascis globosis v. piriformibus, longe late- 

 que stipitatis, 1-4-sporis; sporidiis ellipsoideis, dense et acute aculeatis, mag- 

 nis, 20-22=14-15, luteo-brunneis. (Paoletti in Saccardo's Sylloge Fung., 

 Vol. VIII, 1889, p. 894.) 



No. 149, Harkness Coll. 



In clayey soil beneath oaks, Laundry Farm, Alameda 

 County, March; Howards, Marin County, Calif., May. 



92. Tuber (Sphaerogaster) candidum, sp. nov. 



Plate XLV, Figs. 32^-32^. 



Subrotund, 2 cm. in diam., smooth, color whity brown; gleba light brown; 

 veins attenuate, white; asci subglobose; 3-4-spored; spores globose or 

 ovoid, echinate, brown when mature, 24 n in diam. 



Type, No. 195, Harkness Coll. 



Under dense clusters of Ceanothtis, Auburn, Placer 

 County, Calif., May. 



Differing from T. echinatum Sacc. in the form of the 

 spore. 



