DECADES OF FUNGI. 239 



was sent me many years since from Bombay. The specimens bave 

 been seen by Fries, and are noticed in the place quoted above. The 

 description is necessarily imperfect, but is sufficient to indicate the 

 species. The habit is that of one of the large Mesopod Hydna. 



489. P. (Pleuropus) Thwaifem, n. s. ; candidus; pileo tenui flabel- 

 lato-reniformi subtiliter tomentoso ciebrizonato, margiue acuto ; poris 

 4-6-gonis mediis ; dissepimentis tenuibus, acie tenuissima sublacerata. 



Has. On dead wood. Ceylon. (G. H. K. Thwaites, Esq.) 

 Chalky-white. Pileus l-li inch across, flabellato-reniform, thin, 

 very obscurely tomentose, marked with numerous concentric zones ; 

 margin acute, slightly incurved when dry. Stem lateral, disciform, not 

 at all elongated. Hymenium slightly ochraceous when dry. Pores ^ 

 of an inch across, four- to six-sided ; dissepiments thin. Edge much 

 attenuated, slightly lacerated. 



A very beautiful species, allied to P. Sullivantii^ and remarkable for 

 its large angular pores. 



490. Hexagonia hrevis^ n. s. ; resupinatus; margine breviter reflexo 

 subtiliter strigoso demum sericeo pallido subzonato; poris latiusculis 

 cinereis. 



Hab. On dead wood. Ceylon. (G. H. K. Thwaites, Esq.) 

 Effused, forming elongated, resupinate patches, with the pale, ochra- 

 ceous, slightly strigose, at length silky, somewhat zoned border shortly 

 reflected. Hymenium pale cinereous. Pores -^ of an inch across, 

 hexagonal, irregular; dissepiments rigid. 



A very distinct species, though possibly the specimens may not be 

 quite perfect. It is perhaps nearest to P. cm-vino-plumbeus, Junghuhn. 



491. Favolus manipularis, n. s. ; fascicularis, tener, tenuis; pileo cen- 

 trali orbiculari glabro convexo; stipite centrali gracili; poris amplis 



alveolaribus. 



Hab. On dead wood. Ceylon. (G. H. K. Thwaites^ Esq.) 

 Caespitose, pallid. Pileus orbicular, convex, |-1 inch or more in dia- 

 meter, smooth, dimpled when dry, very tender and soft. Stems cen- 

 tral, above 1 inch high, not a line thick, smooth, connate below. Pores 

 ^^^S^i aV of an inch across, orbicular, hexagonal. 



This species approaches F. cycloporus, Mont., now referred to Laschia. 

 This at least does not seem to belong to that genus, but to be a true 



Favolus. 



492. F. multiplex, Lev., var. Thmilem; pileo subintcgro flabelli- 



