ARCTIC LICHENS. 277 
genus Limboria, judging from the description. Collected near Assist- 
ance Bay. 
No. # comprises the following lichens.— Parmelia elegans, a, Scher. ! 
Lecidea geographica, var. contigua, Fries. L. atroalba, Ach., Fries, (hy- 
pothallo predominante crasso, dendritico). LZ. lapicida ? Fries, ex descr. 
L. confluens, Fries et Auct. pr.p. Also another Lecidea, which appears 
to have changed colour, seemingly allied to Z. superficialis, Scher. 
Likewise other lichens in an imperfect state, one of which is perhaps 
Urceolaria scruposa, Ach. — Lecidea contigua, var. calcarea, Fries. Par- 
melia aurantiaca, y calva, Fries. Assistance Bay. 
No. *?. Parmelia aquila? Ach. (very imperfect and barren), mixed 
with P. elegans (as above), fertile. Prince Alfred’s Bay. 
No. 107. On a piece of bone, used as an implement by the Eski- 
maux, there are some fragments of lichens. P. aquila? barren; and 
apothecia of P. vitellina. Cornwallis Island. 
No. 89. Protococcus nivalis. Assistance Bay. 
No. %4, 74. Parmelia pulverulenta, Ach., var. Fries (P. pityrea, Ach.), 
on moss, barren. Also P. elegans, Ach., fertile. Also Dufourea ra- 
mulosa, Hook., I suppose, but have seen no specimens, 
No. *?. Very imperfect; possibly spoiled Lecidea geographica, Ach., 
in part. | 
No. 28. Umbilicaria hyperborea, Hoffm. U. proboscidea, a, Fries, 
two forms: one smooth below, and one hairy below. Parmelia stygia, 
var. lanata, Fries (Cornicularia lanata, Auctt.). 
No. 48 comprises the following lichens, collected near Cape York, 
Davis Straits.— Ævernia ochroleuca, Fries. Cetraria nivalis, Fries. Cla- 
donia rangiferina, Hoffm. C. pyxidata, Fries. Dufourea ramulosa, Hook.? 
young state. These grow on the ground, matted among each other; all 
barren. There is likewise a mere morsel of Ævernia divergens, Fries. 
Also Umbilicaria vellea, Fries, Summ. Veg. Scand. (U. vellea, a, ejusd. 
Lich. Eur.) var. lecidina, Bab. : apothecia at first resembling a Lecidea, — 
then tuberculated, never gyrated or much papillated in the present fine 
specimen ; margin rather thin, under side pale, blackish about the um- 
bilicus, with branched pale fibres, which become darker in age. Also 
Umbilicaria hyperborea, Hoffm.: two states, fertile. 
No. 92. Lecidea vesicularis, var. globosa, Fries, on earth, fertile. — 
Parmelia triptophylla, var. Schraderi, Fries; fertile. Both from Assist- — 
ance Bay. 
