140 Cii!cii!>ia/i Society of Natural Ilislory. 



2. Ckihkaria vi'LGARis, vSclirad. vSporangiuni large, glob- 

 ose, stipitate, somewhat cernuous; the calyculus brown, 

 finely ribbed and granulose within, occupying Init a small 

 part of the sporangium ; the network of slender threads, with 

 very small nodules at the angles, each with several (3-7) 

 radiating threads, sometimes with one or two free extremities, 

 the meshes triangular or rhombic. Stipe rather short, stout, 

 tapering upward, usually a little bent or curved at the apex, 

 dark purplish brown in color. Spores in the mass pale ochra- 

 ceous, globose, even, 5-7 niic. in diameter. 



Growing on old wood. Sporangium .5-. 7 mm. in diameter, 

 the stipe two or three times the diameter of the sporangium 

 in length. Recognized b}^ the large sporangium and the very 

 small nodules with their few radiating threads. 



3. Cribraria dictvdioides, C. & B. Sporangium large, 

 glol)ose, stipitate, cernuous; the calyculus small, with thick- 

 ish brown ribs, from which the outer thin membrane often 

 disappears soon after maturity; the network of slender 

 threads, with large brown nodules at the angles, more or le.ss 

 elongated and irregular in shape, each with numerous (5-15) 

 radiating threads, usually some with free extremities, the 

 meshes largely triangular. Stipe long, tapering upward, 

 flexuous, curved at the apex, dark purplish-brown in color. 

 Spores in mass pale ochraceous, globose, even, 5-7 mic. in 

 diameter. 



Growing on rotten wood, especially of oak. Sporangium 

 .5-. 6 mm. in diameter, the stipe from three to five times as 

 long. This species appears to be intermediate between Cri- 

 braria vulgaris and Cribraria intricata ; the nodules are usually 

 large and irregular, but the characteristic parallel threads of 

 C intricata do not often occur. The outer membrane of the 

 calyculus is by no means always absent. 



4. Crihraria ivLKGANS, B. & C. Sporangium ratfter large , 

 globose, sti])itate, somewhat cernuous; the calyculus thickly 

 coated inside with dark purple granules, faintly ribbed, occu- 

 P3'ing about a third part of the sporangium ; the network of 

 slender threads, with large irregular dark i)urple nodules, quite 

 variable in shape and size, angular and lobed, below sometimes 

 much elongated, the meshes very irregular. Stipe rather 



