350 
On thallus of Evernia prunastri. Korber (Syst., 42) re- 
gards it, apparently, as a Fungus. 
Spores unknown. 
12. M. Solorinaria, Linds., Spermog., 17-5. 
On thallus of Solorina crocea. 
Pycnidia only. 
13. M. Collemaria, Linds., Spermog., 272. 
On thallus of Collema melee mm. 
Spores unknown. Perhaps a Fungus. 
Genus XXXIII. — Phymatopsis, Tul. Linds., N. 7. Lich. 
and Fungi, 442. 
Species 1. P. dubia, Linds., N. Z. Lich. and Fungi, 442, 
a. On apothecia of Usnea barbata, v. florida. 
Pycnidia only. 
b. On apothecia and thallus of U. barbata, v. ceratina. 
Spores undetermined. 
Genus XXXIV. — Endococcus, Nyl., Nouv. Classif., 193. 
Species 1. E. perpusillus, Nyl., Prod., 193; Pyren., 64. 
On thallus of Lecanora cinerea and Lecidea tenebrosa. 
Spores oblong, 2-locular, brown. Possesses spermogonia. 
Nylander places Microthelia rugulosa , Tichothecium gem- 
miferum, and T. erraticum, with E. perpusillus, in his genus 
Endococcus (Pyren., 64). There seems to me no reason for 
placing these parasites and their co-species in three different 
genera ! 
Genus XXXV. — Verrucaria. 
Species 1. V. innata, Nyl. (Flora, 1865). 
On thallus of Lecidea Hookeri, Schser., but also on earth, 
associated with V. nigrata, Nyl. ; both on Ben Lawers 
(Jones). 
2. V. superposita, Nyl. (Flora, 1865). 
On thallus and hypothallus of V. theleodes, Smrf. ; occur- 
ring also apparently with a proper thallus. Collected by 
Jones and Carroll, probably in Scotland ; but locality not 
given in Leighton’s “Not. Lich.,” ‘Ann. Nat. Hist.,’ 1866. 
3. V. allogena, Nyl. (Flora, 1865). 
On thallus of Lecidea excentrica, Ach., Carroll, 1864 ; but 
also — apparently with a proper thallus — on rocks on summit 
of Ben Lawers, Probably only a variety of V. epidermidis. 
