10 OTTO VERNON DARBISH1RE, (Schwed. Südpolar-Exp. 



plana, margine instructa valde crasso, albido; epithecium parce pruinosum, dein 

 epruinosum; hypothecium fuscescens; sporae octonae. hyalinae, unicellulares, 12 — 

 14x4 — 5 ,» magnae; spermogonia nulla visa neque soralia; habitat ad saxa, South 

 Georgia, Cumberland Bay, Moraine Fiord. 



Notes: The very large and regular apothecia are the most striking points in the 

 appearance of this species. Another feature is the broad white margin of the apo- 

 thecium. This species seems to be not unlike Lecanora atrocaesia NYL. which is 

 found in abundance on Kerguelen but our plant is clearly more coarsely built and 

 the various parts are larger and better developed. 



Aspicilia lirellina nov. spec. 



(Plate 2, fig. lS, 19.) 



Thallus crassus ad 1.5 mm, albidus, continuus et laevis, parce rimosus ut limus 

 desiccatus, K flavens, margine tenuiori et erfluenti; hypothallus albus sed thallum 

 lichenis alieni tangens lineam nigram faciens; apothecia immersa, aspicilioidea, dif- 

 formia, saepius graphideoidea et lirellinea, nigra, ad 3 mm longa et 0.2 — 0.5 mm 

 lata; epithecium rufescens; parathecium et hypothecium quasi minime flavescens; 

 sporae octonae, hyalinae, uniseriatim dispositae, unicellulares, 12 — 14x8 /.i magnae; 

 spermogonia et soralia nulla visa; habitat ad saxa, Falkland Islands, Port Louis. 



Notes: This species is well separated from other species of this genus by the 

 peculiar apothecia which are not unlike those met with in the Graphidei. They are 

 in many cases distinctly lirelline and though occasionally round or more or less 

 round, the majority especially of the larger ones are of very varying shapes. This 

 new species seems to be very common in the locality where the specimens before 

 us were gathered. 



Aspicilia pullata nov. spec. 



(Plate 2, fig. 20.) 



Thallus tenuis, coeruleo-nigricans aut cinereo-nigricans, continuus, parce rimoso- 

 diffractus; hypothallus optime evolutus, nigricans, effusus et ad 4 mm excurrens, 

 laciniatus; apothecia immersa primitus plana deinde parce emergentia et convexula, 

 ad 1 mm lata, rotundata; epithecium nigricans; parathecium et hypothecium decolor; 

 sporae octonae, hyalinae, unicellulares, 15 — 16x5—6 ^1 magnae; spermogonia nulla 

 visa; habitat ad saxa, South Georgia, Cumberland Bay, Moraine Fiord. 



Notes: This species is characterised by a very remarkable hypothallus which ex- 

 tends for in some cases 4 mm from the thallus which itself is very thin. The hypo- 

 thallus consists of dark brown to black laciniae which are very much divided. The 

 specimen before us is quite small and the black searching hypothallus is a very 

 prominent feature. 



