(-iuartzste, sray, schistose North Bay (ieneral. 



■' reddish, coarse Eau Claire " 



" red Algoina Onaping " 



" very dark ■' " " 



Slate, argillite? '• Onaping, Sudy " 



Oranite, porphyritic, red " '• " 



hornblende, dark " '■ X. Bay " 



Diorites. etc " " •• " ' . 



Gneiss. Muscovite, light NorthBay " 



Miotite, dark " " 



' llornlilende, light Algoina, North Bay " 



" " dark North Bay. " 



" ' biotiie, dark " " 



Abstracts of Papers 



Presented at the Second Annual Meeting of the 



Ohio State Academy of Science, held 



IN Columbus, December 



28, AND 29, 1893. 



On Certain Marine Infusoria Observed at Woods 

 HoLL, AIass., by D. S. Kellicott, Columbus. 



After general remarks regarding the richness of 

 Vinyard Sound in minute life, the writer described three 

 species of Vorticellidre regarded as new, as follows : 



1. Lagenophrys eupagurus. On the gills of the 

 smaller "hermit crab" there were found numerous 

 hemispherical, perfectly transparent capsules, 1-600 of 

 an inch in diameter; in these were the carefully pro- 

 tected infusorian which secured its food by protruding 

 the anterior part of its body through an aperture near 

 one edge ; this aperture has about its edge four thick- 

 ened pieces each a quadrent of a circle and which may 

 be closed by the contraction of the animal since the 

 surrounding walls are flexible. This character, it is 

 claimed, distinguishes this species from an3' other of its 

 genus heretofore described. 



2. Thuricola fimbriate. The handsome protecting 

 sheaths of this species, brownish in older specimens, 

 transparent as glass in younger, occurred on sea-weeds 

 especially in tide-pools. Below the lorica is constricted, 



10 



