Bd. IV: ı1) THE LICHENS. 13 
with that of Anzza co/podes which has many spores in its ascus, I found that they 
were of quite different structure. In the case of Anzza colpodes the hypothallus 
consists of anastomosing filaments which are made up of single rows of cells. Each 
filament is never more than one cell thick. In our new species the filaments making 
up the hypothallus are many cells thick in section. Thus the hypothallus is a very 
much firmer and stronger structure. I examined Anzia (subgenus Pannoparmelia) 
angustata as regards its hypothallus and found that it agreed in every way with 
that of the new species dismissa. For theses two reasons I have removed the two 
species angustata MÜLL.-ArG. and anzzordes DARBISH., which now would constitute 
the subgenus Pannoparmelia of Anzia, into a separate genus Pannoparmelia (MÜLL.- 
ARG.) DARBISH. The distinguishing features of Pannoparmelia are that it has a 
very distinect hypothallus made up of threads which are multicellular in section. It 
furthermore has eight spores only in each ascus. These points will also separate 
this genus from Parmelia. HUE places Pannoparmelia as a section of Anzia, and 
the latter as a subgenus of Parmelia. 
Pannoparmelia angustata MÜLL.-ARG. is very like ?. anzioides. But the nar- 
rower endings of the thallus of the former are constrieted in a characteristic manner. 
For this reason BABINGTON gave it the specific name »monzliformis». It is known 
from New Zealand and Tasmania only. 
Parmelia cruenta nov. spec. 
(Plate 2, fig. 23.) 
Thallus foliaceus, adpressus, superne albidus vel pallide flavido-aibidus, lacinia- 
tus, laciniis instructus subimbricatis apieibus rotundatis irregulariter dichotome 
divisis, 2—5 mm latis, axillis rotundatis, superne reticulato-rugulosis, K intense fla- 
vescens et dein rubescens, subtus niger sed margine castaneus; rhizinis instructus ad 
ı mm longis; interne K rubescens; marginibus saepius soralibus instructus; apothecia 
nulla visa; habitat ad corticem arborum, 7Zerra del Fuego, Navarin Island. 
Notes: The determination of this species has caused me no little trouble as the 
specimen before us has no apothecia. It is clearly related most nearly to Parmelia 
laevigata (ACH.) NyYL. It is however separated from this plant by the uneven sur- 
face which is not unlike that of Parmelia saxatilis (L.) FR., but the reticulations 
are more regular in this species than in our new one. 
Rinodina crassa nov. spec. 
(Plate 2, fig. 24.) 
Thallus crassus ad 3 mm, albido-flavescens, inaequalis, rimoso-diffractus et areo- 
latus, quasi ambitu lobatus, squamulosus, K intense lutescens; hypothallus nigricans 
