Murrill: Agaricaceae of Tropical North America 21 



April and June, 19 12, /. R. Johnston 330, 420. This species re- 

 sembles A. mexicana and also species of Coprinus. Many of the 

 pilei have deliquesced or otherwise disappeared, leaving only 

 the stipes and the cottony patches of mycelium. 



7. Atylospora euthugramma (Berk. & Curt.) 



Agaricus euthugrammus Berk. & Curt. Jour. Linn. Soc. 10 : 290. 

 1868. 



Naucoria euthugramma Sacc. Syll. Fung. 5:835. 1887. 



Known only from minute specimens collected on decayed woo'd 

 in Cuba by Wright. It is said by the author to have the habit of 

 Agaricus disseminatus but to have spores quite different in color 

 and size. I find them to be broadly ellipsoid, smooth, pale- 

 purplish-brown under the microscope, 5 X 4 



8. Atylospora coprinoceps (Berk. & Curt.) 



Agaricus coprinoceps Berk. & Curt. Jour. Linn. Soc. to: 290. 

 1868. 



Naucoria coprinoceps (Berk & Curt.) Sacc. Syll. Fung. 5:835. 

 1887. 



Known only from specimens collected by Wright on logs in 

 Cuba. The spores are too dark fo'r Naucoria. 



9. Atylospora Musae (Earle) 



Gymnochilus Musae Earle, Inf. An. Estac. Centr. Agron. Cuba 

 1 : 239. 1906. 



This species occurs on fallen dead stems and leaves of banana 

 trees in Cuba, where it was found and described by Earle. Al- 

 though very near to species of Drosophila, it seems to me to be- 

 long rather in Atylospora. The stipe is very slender, only 2 mm. 

 thick, and the spores are ellipsoid or ovoid, smooth, 2-guttulate, 

 nearly opaque, decidedly purplish-brown under the microscope, 

 6-8X4-5/*- 



10. Atylospora mexicana Murrill, sp. nov. 



Pileus convex, not umbonate, not fully expanding, gregarious 

 to subcespitose, 1 cm. broad ; surface glabrous, smooth, some- 



