NlCARAGUAN*MxYOMYCETES. 381 



14. COMATRICHA TYPHINA Rostofiuski. 



Typical specimens from San Carlos. Mr. Shimek. 



15. Stemonitis fusca Roth. 



Typical specimens from Castillo. Collected by jNIr. Shimek. 



16. Stemonitis splendens Rostafinski. 



Specimens from Ometepe correspond well with specimens 

 of this species received from Europe although I find little if 

 any difference between this and the American form S. morgani 

 of Peck. 



17. Stemonitis ferruginea Ehrcnhcrg. 



Typical specimens from Ometepe. Collected by Mr, Shimek. 



18. Stemonitis s:mithii Machride. n. s. Plate X, Figs. 4, 



4f? and 4^. 



Sporangium in scattered clusters, springing from a well- 

 developed but not continuous hypothailus, cylindric, short, 

 about 2.5 mm.; stipe about as long as the sporangium proper; 

 peridium evanescent; columella stout, rod-like, extending 

 nearly to the apex; capillitium formed of the rather stout, 

 sparingly divided branches of the columella, which only at the 

 periphery break into twigs to form the very narrow-meshed 

 net; meshes about equal to the spores in diameter; spores 

 pale, smooth 4-5 «. 



This species is allied to S. ferruginca R., from which it dif- 

 fers bv its minute stature, 5 mm.; from S. carlylei Mass., it is 

 distinguished by its much smaller spores. The present species 

 is the most delicate Stemonitis Lhave yet seen. 



19. STErkioNiTis CAS tillensis Macbvidc. n. s. Plate X, Figs. 



5, 5<7 and 5<5. 



Sporangia crowded, stipitate, springing from a well devel- 

 oped hypothailus, about 15-1S mm. including the stipe which 

 is about one-third; columella prominent, extending nearh' to 



