1 84 



The Ohio Naturalist. 



[Vol. X, No. 8, 



Strophitus edentulus (Lea, Anodonta) ? No specimen in mv 



collection, but listed in my notes. 

 Anodontoides ferussacianus subcylindraceus Lea.?, one speci- 

 men . 

 Anodonta grandis Say, one specimen. 



What appeared to be a white specimen of Ouadrula coccineus 

 Conrad, was found near the Lake Laboratory, and probably 

 came from the Sandusky Bay. The Ijalance of these shells 

 were picked iip on the shore of Lake Erie between Cedar Point 

 and the Laboratory. The list is by no means complete, probablv 

 but simply shows what can be gathered in one season. Several 

 species were taken alive. 



XEROPHYTIC ADAPTATIONS OF APOCYNUM 

 HYPERICIFOLIUM. 



John H. Schaffner. 



In the January, 1905, Ohio Naturalist, the writer presented 

 some observations on the occurrence and development of mat 

 plants, showing that some plants which are erect in an ordinary 

 environment become prostrate, with radiating branches, when 

 growing in exposed situations as on a sandbar or newly plowed 

 prairie. While studying the xerophytic vegetation of Cedar 

 Point, at vSandusky, Ohio, my attention was called to the pros- 



FiG. 1. .Vpoeyiiiim hypericifoliiini growing on a sand l)lo\v-out 

 on Cedar Point. 



