INVERTEBRATES 
Hirudinea. 
The leeches or bloodsuckers are partly carnivor- 
ous and partly parasitic on our aquatic Vertebrates 
(principally fish and turtles). For the following 
list of Toronto species I am indebted to Miss ©. G. S. 
Ryerson. 
Glossiphonia stagnalis (L.)—shores and _ pools 
everywhere. (Harbour by Nichol- 
son as Clepsine submodesta.) 
complanata (L.)—Humber, Toronto 
Bay, Don. (Harbour by Nichol- 
son as Clepsine patelliformis). 
heteroclita (L.)—Sunnyside. 
Placobdella parasitica (Say)—Etobicoke, Weston. 
eS phalera (Graf)—Humber. 
Erpobdella punctata (Leidy)—shores and pools 
everywhere. (Harbour by Nichol- 
son as Nephelis lateralis.) 
Piscicola (?) milneri (Verrill)—Humber. 
Placobdella picta (Verrill)—Grenadier Pond. 
Haemopis marmoratus (Say)—Etobicoke. 
“ 
Bryozoa. 
These curious “ moss-animals” are sedentary. 
They are found growing in colonies as much as a foot 
in diameter, attached to all sorts of objects in the 
water. 
Paludicella articulata | (Ehrenberg)—-Georgian 
Bay.* 
Q07 
