The Flora of Montreal Island 349 



and stout in proportion. The length of the chrysalis 

 (antiopa) is only 1^ in. and diameter at thickest part 

 f in., so one can easily imagine how crowded 130 maggots 

 would be in such a small space. A Montreal street car 

 at 6 in the evening will give the reader an idea how 

 tightly these grubs are packed together. 



The maggots change into chrysalides and the flies soon 

 emerge by piercing one or two holes, and are just in time 

 to destroy the larvae of the common white butterfly, while 



some hibernate. 



A. E. NoERis. 



2753 St. Catherine Street, 



Montreal, March 1, 1901. 



The Flora of Montreal Island.^ 



( Continued from Vol. VIII. , Number 1, p. S4- ) 

 By Rev. Robert Campbell, M.A., D.D. 



Now for the first time an attempt is made to collect and 

 classify the mosses of the district. Doubtless the local 

 species were noted' by Mr. D. A. P. Watt and others who 

 catalogued the Acrogens of Canada forty years ago, but no 

 distinction was made between those found near the city 

 and those collected elsewhere. The following mosses 

 were obtained during the summer and autumn of 1900 : 



SPHAGNACE^— Peat Mosses. 



SPHAGNUM Dill. 



Sphagnum acutifolium Eheh. — Peat Moss. — Savanne, 

 St. Michel. August. 



1 Being the substance of two paiiers read before the Natural Histoiy Society of 

 Montreal, session 1900-1901. 



