MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 611 
Prate LXXXIII. 
Polypodium cyrtolobum, J. Smith, from a Sikkim example ; rhizome with one frond, nat. size. 
Prare LXXXIV. 
Fig. 1. Lycopodium lucidulum, Michx., from a Sikkim example ; fruiting branch, nat. size. 
Fig. 2. Acrostichum crispatulum, Wall., from Sikkim examples.—B. Fragment from the middle of a 
barren frond of Wallich’s type, 6 pinnæ shown, nat. size. D. A part of one of the pinnæ of 
B, magn. 14 diam. A. Fragment from the middle of a barren frond of var. contaminans 
(sp. Wall.), 7 pinnæ shown, nat. size. C. A part of one of the pinnæ of A, magn. 1} diam. 
Fig. 3. Vittaria Sikkimensis, Kuhn, from a Sikkim example; transverse section of a fruiting frond, 
magn. 10 diam. 
ERRORS. 
On page 444, line 18 from top, dele “ Cystopteris dimidiata, Dene.” ; which is correctly referred to D. BULLATA on 
p. 445. 
On page 512, bottom line, for * F. cusrIpatUm " read N. cusprpatum. 
