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 C. 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. 

 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 mannoratus (Say) Etobicoke. 



BEYOZOA. 



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 



I Bay.* 



277 



