254 ENDOSPOREAE [PERICHAENA 



but but( ly on insufficient grounds. The type of Licea reticulata Berk. 

 & Br., from Ceylon (B.M. slide) is also the present species ; the sporangia 

 list of minute pale umber net-like plasmodiocarps, some of which 

 have very scanty capillitium, but in others it is more abundant and of 

 the usual minutely warted typo ; the spores are closely and minutely 

 war ted and measure 11 to 15 /i.. In all the specimens enumerated above, 

 the inner layer of the sporangium-wall is minutely papillose, a character 

 by which this species of Pcrichaena is distinguished from all others. 

 The var. pedata is a somewhat doubtful form of the present species. 

 It has firmer, less irregular capillitium than the type, and the sporan- 

 gium-wall is less distinctly papillose : in these respects it approaches 

 P. corticalis var. affinis. Two small gatherings only have so far been 

 recorded, viz., one on an ivy-leaf from Lyme Regis, Dorset, obtained 

 by Miss M. J. Lloyd, and one on bark, from Chestnut Hill, Philadelphia, 

 found by Mr. Hugo Bilgram. 



Hab. On dead leaves, herbaceous stems, bark, etc. — Lyme Regis, 

 Dorset (B.M. 1530) ; Batheaston, Somerset (B.M. 310) ; Luton, Beds. 

 (B.M. 3143); Worcester (B.M. 3144); Yorks. (B.M. 3145); Aberdeen 

 (B.M. 3140) ; Sweden (B.M. 3147) ; Ceylon (B.M. slide) ; Java (Herb. 

 Buitenzore) ; New Jersey (K. 990) ; Philadelphia (B.M. 1532) : North 

 Carolina (K. 1671); South Carolina (B.M. 953): var. pedata— Lyme 

 Regis (B.M. slide). 



6. P. microspora Penzig & Lister in Penzig Myx. Buit., 76 



(1898). Plasmodium ? Sporangia forming slender, short, 

 elongated, or net-like plasmodiocarps, 0-25 to 0-35 mm. diani., 

 salmon-pink, glossy ; sporangium -wall membranous, single, 

 yellowish, smooth, thickened with deposits of granular matter 

 towards the base only. Capillitium a loose network of slender 

 fragile yellowish-pink threads, 1-5 to 2 jx diam., marked with 

 minute spines and with shallow constrictions at intervals of 1 to 

 2^, more or less attached to the sporangium-wall. Spores in 

 mass pinkish-yellow, when magnified pale yellowish, closely 

 and minutely spinulose, 6 to 8 fx diam.— Petch in Ann. Perad., 

 iv. 369. 



PI. 185. — (7. plasmodiocarps ; b. capillitium and spores with fragment of sporansium- 

 wall ; (Java). 



Hob. On dead leaves and twigs. — Ceylon (B.M. 3142) ; Java (B.M. 

 slide). 



It is probable from the description of Perichaena ? pscitdaecidium 

 Speg. (in Ann. Soc. Cient. Argent., xxii. 187, 1886) that this species 

 should be excluded from the Mycetozoa. 



Order III. — aIargaritaceae. 



Sporangia usually sessile ; sporangium-wall single, rarely 

 of two layers in Dianema, smooth, usually translucent ; 

 capillitium consisting of solid threads, either coiled and hair- 

 like, or nearly straight and attached to the sporangium- 

 walls, simple or branching at an acute angle. 



