1897] ZYGOMYCETES, SVNCEPHALASTRUM AND SYNCEPHALIS 15 
the indurated portion of the zone later forming part of the spore wall. +¢. 
oc. 4. 
Fic. 36. More mature condition of the sporangial filaments; 4, the sepa- 
ration disk. J. oc. 2 
Fic. 37. Mature sporangial filaments, the spores beginning to separate. 
j. Oo, 
Fic. 38. Mature terminal spore showing persistent ‘portion of intermedi- 
ary zone (a, *. The spore wall more definitely distinguished than in 
nature. jy. oc 
Syncephalis, n. sp. 
FIGs. 39-41. Successive stages in the formation of the intermediary 
zones in young sporangial filaments, showing gradual constriction and sep- 
aration of the contents into parts corresponding to the spores. +g. oc. 4. 
Fig. 42. Terminal portion of sporangial hypha. The spores mature, 
separated by the intermediary zones, indicated in part by dotted lines, begin- 
ning to become mucilaginous. +s. oc. 4. 
