Botany and Zoology. 139 
grans, and spinulosum (including dilatatum). NW. Noveboracense, Goldi- 
eanum and marginale are exclusively American. - Noveboracense is 
strangely a subject of doubt, as to whether it is really distinct from WV. 
Thelypteris. Asp. Ludovicianum the author has not seen, but his WV. 
oridanum, figured in Filices Exotica, is referred to WN. filiz-mas, 
though somewhat doubtfully. The writer of this notice, who has seen 
the living Fern in Florida, is disposed rather to consider it a form of Asp. 
cristatum. (See Chapman’s Flora of the Southern States.) Good and abun- 
retained asa genus, though hardly distinct enough from Wephrodium. 
Struthiopleris is now known to ave involucrate sori, and is therefore 
very properly united with Onoclea, the oldest name. The species of 
Onoelea will be given in part XV. 
There occur here and there some typographical and other errors. On 
pee 60 the name draconopterum, which was given to a Fern from the 
hmus of Darien, is converted into dicranopterum, a good enough 
same, but not the original one, and not applicable to the plant referred 
So, on page 54, for Huasplenium, Euaspidium was intended. 
One who compares this Species Filicum with other systematic works 
on this extensive and difficult order will find that it is remarkable for 
~© ease with which it enables the student to identify an u 
ah. Many doubtful and little known species are omitted; but if a Fern 
described in the book, its name can almost invariably be found with 
5. On the classification of the Brachyura, and on the homologies of the 
in Decapod Ci . 
