6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



papulosis instructum. Endostomium ? Calyptram operculumque 

 haud vidi. 



Hab. : Tree trunk in forest, Kipayo, alt. 4,000 ft., March, 1914, 

 Diimmer 721. 



The first member of this beautiful genus to be found in Africa. 

 Of a dozen or so stems none show any tendency to the gemmiparous, 

 flagelliform attenuation of most of the section Cyathophorella 

 (raised by Fleischer to the position of a genus) ; but the peristome 

 undoubtedly belongs there. This is, however, of a very puzzling 

 nature. Only two capsules ahow it in at all good condition. In the 

 one case the teeth are all densely and coarsely papillose from top to 

 bottom, very unequal in width, and somewhat irregular in form; 

 and there appears to be no endostome. In the other the teeth, while 

 approximately of the same build, equally irregular or more so, are 

 absolutely smooth and pellucid ; and again there is no indication of a 

 second row. At first I supposed these to be the endostome ; but if so, 

 there is absolutely no trace of outer peristome left, which would be 

 remarkable considering that the inner (if it so be) is fairly, if not 

 altogether intact ; and still more so as in that case we are to con- 

 sider that in the first capsule described the outer peristome has 

 remained more or less perfect while the inner has altogether disap- 

 peared. I am strongly inclined to suppose, therefore, that here too 

 it is the outer peristome present, but entirely free from the dense 

 coating of papillae shown in the former. 



RHACOPILACEAE 

 RHACOPILUM SPELUNCAE C. M. 



On trees, Chiko Forest, Busoga, alt. 3,500 ft., 1916, Snowden 3. 



This agrees with Schweinfurth's plant in the Kew Herbarium. 

 The leaves, convolute and often rigidly spreading when dry, not at 

 all connivent, and the large stipular leaves, almost similar in form to 

 the lateral leaves, seem to be features of this species. 



RHACOPILUM MARGINATUM Dixon, sp. nov. 

 Species valde notatum, praecipue foliorum areolatione, e cellulis 

 magnis, elliptico-hexagonis, 20-30 /x longis, 12-15 /jl latis instructa, 

 marginalibus 1-2 seriebus perangustis, linearibus vel rhomboideo- 

 linearibus, limbum sat notatum instruentibus ; basilaribus multo 

 laxioribus, oblongis, superioribus plus minusve papillosis. Folia 

 lateralia valde asymmetrica, majuscula, 2.5-3 mm - l° n g a > obtusius- 

 cula, supra medium sat argute denticulata ; costa in cuspidem 



