Y 



CONTENTS. 



Seyffarth, G. — The Hieroglyphic Tablet of Pompeium 

 grammatically translated and commented on 193 



Riley, C. V. — Notes on North American Microgasters, 

 with descriptions of New Species 296 



Riley, C. V. — Descriptions of some New Tortricidce 



(Leaf-rollers) 3^6 



NiPHER, F. E. — On Certain Problems in Refraction 325 



NiPHER, F. E. — Magnetic Determinations in Missouri dur- 

 ing the Summer of 18S0 333 



Todd, C. A.— "Reversion of Type" in the Digastric Muscle 

 of the Human Being 351 



Pritchett, H. S. — Ephemeris of the Satellites of Mars for 

 the Opposition of i88[ .' 353 



Engelmann, G. — The Genus Isoetes in North America 358 



Engler, E. A. — Auroral Phenomena, Sept. 12, 1881 391 



Journal of Proceedings xlix 



Publications donated. 



" received in exchange. 



