69 
the dead leaves, &c. We only have 4 out of 9 British 
recorded in our district. 
GENUS 88. ENERTHENEMA.* BOWM. LINN. TRANS. 
Peridium very delicate, simple, evanescent, except at the apex 
where it is adnate with the dilated top of the penetrating, dark 
stem. Capillitium dependent, attached to the dilated disk. 
Spores surrounded by a cyst. 
1.—Enerthenema elegans, Bowm. Linn. Tranns XVI. t 16 (plate 
1, fig 6c), on rotting boards. Batheaston. The only species. 
GENUS 89. DICTYDIUM. fT SCHRAD. 
Peridium simple, very Sarat reticulated or veined from the 
innate capillitium. 
1.—Dictydium umbilicatum Schrad. Grev. t 153. Rudlow. The 
only British species. 
GENUS 90. CRIBRARIA. + SCHRAD. 
Peridium simple, persistent below, vanishing above. Flocci 
innate, forming a free network in the upper half of the peridium. 
Out of 4 species recorded as British in Cooke’s handbook none has 
occurred here, they grow chiefly on fir stumps which do not 
abound here. 
GENUS 91. ARCYRIA.§ HILL. 
Peridium simple, upper part very fugacious. Capillitium elastic. 
Flocci, not spiral. 
1.—Arcyria punicea. P, Sow. t 49. Grey.t 130. Very common 
on rotten wood. 
2a.—Arcyria incarnata P. Observ. I. t 5, fig. 4, 5. Common. 
34.—Arcyria cinerea Schum. Burl t 477, f. 3. Common. 
* Enerthenema from enerthe below, and nema a thread. 
+ Dictydium from dictyon a net, and eidos a resemblance. 
+t Cribraria from cribrum a sieve. 
§ Arcyria, from Arcus, a net, 
