NATURAL HISTORY, TORONTO REGION 



Family Streptomatidae. 



Goniobasis livescens, Menke. (L). Etobicoke Creek, 



Humber River, 

 virginica, Gmelin. ? Toronto Bay. 



PELYCYPODA. 



Family Unionidae. 

 Lampsilis luteolis, Lamarck. (B). 

 radiatus, Gmelin. (B). 

 ellipsiformis, Conrad. (B). 

 ochraceus, Say. ? 



Anodonta grandis, Say. (B), (L). Centre Island. 

 " grandis, var. benedictensis, Lea. (B). 

 cataracta, Say. (L). Centre Island. 

 Anodontoides ferussacianus, Lea. (B). 



ferussaciamis, var. subcylindraceus 

 Lea. (L). Don River. 

 Symphynota compressa, Lea. (B), (L). 

 TJnio complanatus, Solander. (B). 

 " crassidens, Lamarck. ? 

 " gibbosus, Barnes. (B). 

 " nasutus, Say. (L). 

 " rectus, Lamarck. (L). 



Family Sphaeriidae. 



Sphaerium simile, Say. (B), (L). Grenadier Pond. 

 " striatinum, Lamarck. (L). 

 " stamineum, Conrad. (L). 

 " (Musculium) securis, Prime. Don River, 



Centre Island, High Park. 

 292 



