12 OTTO V. DARBISHIRE. [SEC.ARCT.EXP.FRAM 



tundalis, hyalinae, 1~> 20 ; 7 10 mi. magnae. Spermogonia nun visa. 

 Habitat ail saxa. terrain nudnin et supra muscos Americae Arcticae. 



Notes: The new plant before us is very striking in appearance, 

 and I think there ran he m> doubt that it is nearly allied to Placodiiun 

 i'l<'!l<mx. thus it resembles "Lecanora elegans (Acn.) f. viuscicola. in 

 H. I AUK. A. Lichenes Regni Hungarici Exsiccali. Fasciculus 3. (1882). 

 n. 120." Hut the latter lias smaller spores (up to 14 mi. in length only) 

 and the margin of the apothccia is more marked. Our new species 

 often becomes almost Eruticulose. Portions of the thallns stand up like 

 the upright podetia of Dactylina arctica. Hut they are much smaller, 

 about I cm. in height, and they are always dorsiventral in structure. 

 Apotlircia seem to be rare, some specimens being quite devoid of such. 

 The complete absence of rhizines at once separates this species from 

 any kind of Xauthoriu. 



Aspicilia lesleyann. (Tab. 2, fig. 2). 



Diagnosis: Crusta tennis vel crassiuscula, albo-cinerascen.s ant 

 dilute roseola, rimoso-areolata vel rimoso-diffracta, margine quasi effi- 

 gnrato. frequenter non-contigua. hypothallo nigro veil pallido. Apothecia 

 ad 1 mm. lata. primum immersa, urceolata, dein emersa, semper mar- 

 gine dislincto cincta, atra. pruinosa; epithecium nigrum; sporae octonae, 

 hyalinae, 15 X 7.5 mi. magnae. Habitat ad sa.xa. 



Notes: The species of Aspicilia are common enough in the 

 "Fram"-material, but they have given me a great deal of trouble. I consider 

 however this to be a new species, though not unlike Aspicilia caharea, 

 (L.) SMRFT. The latter however has fewer, 1ml larger spores in it> asci. 

 Tin- fltallns of our new species is distinctly areolate and near the mar- 

 gin il breaks up almost into long thin laciniae, still distinctly areolate. 

 The HiUns often consists of only one fertile wart. The hi/potl/aUus is 

 as often clearly marked as not present. 



Aspiciliu nikrnpensis. (Tab. 2, fig. 3). 



l)iagn<.> i>: (Iru.Ma tennis ant crassiusctda, tartarea, albo-ciner- 

 aacens, '-milimia. centro inter apotheria matura distincte rimoso-areolata, 

 marline lenui, quasi effigurato, hypothallo nigro ant nullo dislincto. 

 Apolheria primnm immersa, demum emer>a. disco planiusculo, pruinoso, 



mar-uif di-tincto instructa; sporae oclonae. KJ 2<> \ 1 8 ii)i. magnae. 

 llahital ad saxa. 



