‘REVISION OF THE KERGUELEN LICHENS. 101 
an inch long, and is rather thicker towards its apex; the cotyledons 
are oval, membranous-foliaceous, and broader and rather longer than 
the radicle. 
As regards fossils, since my ai notes, Bide species have bee 
Seared by Professor Heer in a paper titled ** Deber fossile 
iichte der Oase Chargeh,” extracted from enkschriften der 
Buhweiseriecken Naturforschenden Gencllecbafe! " cof: xxvii, (1876). 
These fossils were collected in the interior of Africa in the winter of 
1874 by Dr. George Schweinfurth in the oasis of Chargeh, about 
25° north latitude, in the Libyan Desert; the geological age is 
Upper Cretaceous, and a palm-fruit was found i in a same e beds. The 
— given by Professor Heer are as follows: — 
et os ScuweinFurtui, Heer, Foss. FI. om Chargeh, p. 6, 
g. 1-10.—D., fruetibus depresso- glubosis, subcostatis, 18-22 mm 
latic siloeularibus loculis monospermis, marginem attingentibus. 
Hab.—¥1 Chargeh, at the foot of Gebel Rennihma and of - Gebel 
Taruan, under ‘ie white chalk of Ananchytes ovatus. 
OYENA DESERTORUM, Heer, Fl. Oase Chargeh, p. 10, n. 2, 
fig. 11-16.—R. fructibus depresso- -globosis, dehiscentibus, 14- 15mm, 
_ latis, sexlocularibus, set monos 
Ha —_ argeh, a 
A clk fossil me “is fon cmabel by Professor Heer as 
follow. 
his tospykos Propromus, Heer, Flora Foss. Arctica i iii , Kreide- Flora 
der Arstische Zone, p. 112, t. xxviii. » f. 6 ¢, t. XXXil., f. 8-7 (1874).— 
D. foliis ovato-ellipticis, summa basi paululo in petiolum attenuatis 
integerrimis; nervis secundariis pe capties valde camptodromis, 
sig a a Kes, are remotis ; calyce 3 
tane- et rane Novth Greenland ; Cenomanian 
ioe ‘Greenaand). 
ExpiaNnation oF Tas. 186. 
The principal figure a natural size, the — portion of a —— of 
Maba er alae 2 with leaves persistent above and fruits below. Fig. 1 shows, 
| size, the on er portion of a detached fruit cut across ratte the 
; there are two unequal ce the sete cell contain two 
seeds, and the smaller cell only one seed ; at t soos Gk the fie ie ach gant ol 
pata ued recurving calyx, Fig. 2 shows bg entire seed removed from the 
? 
REVISION OF THE KERGUELEN LICHENS COLLECTED 
BY DR. HOOKER. 
By rae Rev. J. M. Cronus, F.L.S., &c. 
In my ‘‘ Enumeration ee the Kerguelen coma collected during 
se, bate Venus Transit Expedition, in . Linn. Soc. Bot., 
y., pp. 180-193, I stated that I based & giving a revision of 
thoed collected need Dr. Hooker during the voyage of H.M. y- 
are ee error, and now deposited in the a ium 
ere frat armel recorded and described | agp 
