LIST OF PLANTS COLLECTED IN LONDON, C. wW. 219 
April. The young are then perfectly formed in every respect like the 
adults and undergo no metamorphosis, they remain attached to the 
parent till their first moult, which in some I kept in confinement did 
not take place till late in May, but I think it probably would have 
been earlier in a state of nature. The subject of the metamorphosis 
of the crustacea is one of great interest, and as yet of much uncer- 
tainty, though since the startling discovery ot Thompson much has 
been done ; yet how can we account for it, that some crustaceans as 
the genus now under consideration are hatched perfect, while accord- 
ing to M. Coste, the young of the nearly allied Palinuri constitute the 
old genus Phylopoma, and some have even asserted that the still 
more closely allied Homanus undergo change? 
I was much surprised at the length of time required for incubation, 
being a fact I had not been aware of, but 1 find on the authority of 
M. Coste, that this habit is quite normal. He says “All the crus- 
tacea carry their eggs under their tail or some other part of the body 
where incubation takes place, this incubation is very generally slow, 
it does not take less than five or six months in Lobsters and Palin- 
uri.” 
LIST OF PLANTS COLLECTED CHIEFLY IN THE IMME- 
DIATE NEIGHBOURHOOD OF LONDON, C. W. 
BY W. SAUNDERS 
A grateful acknowledgment is due Professor Hincks of University 
College, Toronto, for his unvarying kindness to the collector in deter- 
mining a large number of the plants in the following list which, for 
want of time could not be named, while in a fresh condition. The 
Professor, from his extensive knowledge of the Flora of our country, 
has been enabled to determine with cer tainty from the dried specimens 
nearly all that have been submitted to him. There are, however, afew 
rare and interesting ones, which had not previously come under his 
observation, and which could not well be positively determined without 
fresh specimens. These will be found questioned, although in nearly 
every place the evidence furnished by the dry plant has been almost 
positive as to the entire correctness of the name given. 
