18 OTTO VERNON DARBISHIRE, (Schwed. Südpolar-Exp. 
Verrucaria famelica nov. spec. 
(Plate 3, fig. 33.) 
Thallus nigrofuscus aut totus nigricans, tenuis, crustaceus aut nullus et apothe- 
ciis solis constans et interruptus; gonidia protococcoidea; superne corticatus strato 
tenui et nigricanti; apothecia pyrenoidea tota 0.25—0.; mm lata; ostiolum minutum, 
ad 20 u latum; parathecium et epithecium nigricans; hypothecium pallidum; asci 
60—70 u alti, 16—18 u lati; paraphyses gelatinosae; sporae octonae, polyseriatim 
dispositae, hyalinae, unicellulares, 13—20x6—8 u magnae; habitat ad saxa, South 
Shetland Islands, Nelson Island. 
Notes: This too is a rather small species but as the substratum is a light grey 
and the apothecia and thallus dark brown or almost black the plant is easily seen. 
The thallus consists either of small rounded patches of thin simple structure bearing 
apothecia or the apothecia are found to be solitary and not connected with any 
portion of the thallus. 
Verrucaria glaucoplacoides nov. spec. 
(Plate 3, fig. 34, 35). 
Thallus crassus. profunde rimoso-areolatus, areolis 2—3 mm latis (et nunquam 
majoribus), cinereo-fuscescens, interstitiis nigerrimis et profundis; gonidia protecoccoi- 
dea; hypothallus non bene visus, nigricans; apothecia pyrenoidcea, thallo semiimmersa, 
nigra, 0.1—0.18 mm lata; ostiolum minimum; epithecium nigrofuscum; parathecium 
et hypothecium pallidum; sporae octonae, hyalinae, unicellulares 10—14 x 6—8 u 
magnae; spermogonia nulla visa; habitat ad saxa, Falkland Islands, Port Louis. 
Notes: This plant is in general exterior view not unlike Verrucaria glaucoplaca 
WaAaın., especially when one compares the figure of this species in Waın. Beleg. 
(p. 37, pl. I, fig. 5). Our species may in fact possibly be simply a smaller form of 
this plant. The thallus of our plant has smaller areoles and the spores too seem 
to be smaller. The hypothallus of our plant is also generally black when it can be 
made out at all. The deep chinks between the areoles are well marked in both 
species. They soon almost completely close up when the plant is moistened. 
Chaetomium Bacidiae nov. spec. 
(This species is not included in any of the statistical notes). 
I have not been able to make very much out of this parasite. It is clearly a 
species of Chaetomium. The apothecia are either embedded more or less in the 
apothecia of the species of Bacidia or they project. They are covered with the 
characteristic hairs. I was unable to make out spores properly. The parasite oc- 
curred on Dacidia tuberculata, Falkland Islands, Port Louis. 
