66 THE VICTORIAN NATURALIST. 



it becomes a deep yellow from exposure of the chrysogonimic 

 layer. 



24. Coniocyhe rhodocephala. Wilson, spec. nov. 



Thallus scanty, obscurely virescent, leprose, or none. Apothecia 

 on stipe fuscous or black pruinose (to "2 mm. high, '2 mm. thick), 

 sometimes forked, or two partly coalescent. Capitulum globose, 

 pale rose or pale flesh, rarely whitish. Spores very numerous, 

 massed together, colourless, ellipsoid or oblongo-ellipsoid, oo3-"oo6 

 mm. long, "0015 mm. broad, bilocular or placodine or uniseptate. 

 Paries thick. Paraphyses numerous, distinct. Habitat on dead 

 bark of decaying trees in thick scrub. This species is remarkable 

 for the form of its spores. All the species of this genus hitherto 

 described have spherical spores without septa. 



25. Coniocybe citriocephela. Wilson, spec. nov. 



Thallus white, thin. Apothecia minute. Stipe black, slender, 

 to "I mm. high, "06 mm. thick. Capitulum greenish yellow, 

 turbinate, at length globose, to 2 mm. diameter. When denuded 

 of the sporal mass it is fuscous and turbinate. Spores colourless 

 or dilutely yellow, briefly oblongo-ellipsoid or spheroidal (-02-04 

 mm. long, •02-"03 mm. thick). Habitat on decaying tree and on 

 dead bark of tree near permanent water. 



26. Trachylia lecanorina. Wilson, spec. nov. 

 Thallus cinerascent, verruculose, passim verruco sorediate. 

 Apothecia to '5 mm. wide, crowded, elevated in thalline verrucse, 

 sporal mass abundant, often much protruded, and conjoining with 

 that from neighbouring apothecia. Spores fusco nigricant or 

 nigrescent or nearly colourless ; ellipsoid, uniseptate (•oi-'o2 mm. 

 long, •oo6-'oi mm. broad). Gonidia numerous and of moderate 

 size. Habitat on old eucalyptus rails and posts. This plant 

 bears at first sight a great resemblance to Lecanora atra, for a 

 rubbed specimen of which it was at first mistaken. It is more 

 lecanoroid than the rest of the genus. 



27. Trachylia vh-idiloadaris. Wilson, spec. nov. 



Thallus obscurely cinerascent. Apothecia wholly black, slightly 

 elevated, '3 mm. high, "3 mm. broad. Sporal mass abundant. 

 Spores nigricant or virescenti-nigricant, or when immature fuscous, 

 irregularly illipsoid, uniseptate, one or occasionally two locules in 

 each cell, locule often bottle-green. Gonidia round or ellipsoid, 

 with or without paries (■oo2--oi mm. diam.) Habitat on old sawn 

 eucalyptus rails, associated with Caliciiini nigrum, var. mimchim, 

 the Calicium on the more decayed horizontal face of the squared 

 rail and the Trachylia on the perpendicular face. 



28. Trachylia etnergens. Wilson, spec. nov. 



Thallus white or whitish or cinerascent, thin, smooth, almost 

 shining. Apothecia, when young, apparently emerging from 



