Fig. 4. 

 Fig. 3. 



Fig. 3, enlarged. Fig. 4, type specimen in herbarium of Professor Patouillard. 

 TYLOSTOMA MONTANUM. 



Fig. 5. Fig. 6. 



Fig. 5, specimens from W. H. Long, Jr., Texas. Fig. 6, enlarged. 

 TYLOSTOMA ALBICANS. 



