Descriptions of new species of North American Formicidae, 

 by S. B. Buckley, (commencement in No. 1.) . . 153 



Notes on the Zygeenidee of Cuba, Part 1, by Aug. B. Grote. 173 



Descriptions of some new species of Pselapkidae,, by Emil 



Brendel, M. D 189 



On certain North American species of Satyrus, by William 



H. Edwards * . 195 



Description of certain Diurnal Lepidoptera found within the 

 limits of the United States and British America, No. 5, by 

 William H. Edwards. . . . • . . 200 



Description of a new species of Clirysophanus, by H. Behr, 

 M. D. . . 208 



On certain Entomological Speculations. — A Beview, by A. S. 

 Packard, Jr., M. D 209 



Description of two new North American Cecidomyiee, by 

 Baron B. Osten Sacken. ....... 219 



Notes on Thyridopteryx ephemerseformis, by Brackenridge 

 Clemens, M. D .221 



On the Insects, Coleopterous, Ilymenopterous and Dipterous, 

 inhabiting the Galls of certain species of Willow, Part 2nd. and 

 last, by Benj. D. Walsh, M. A., (conclusion in No. 3.) . .223 



NOTICE. 



On the cover of the first number of this volume, we stated that 

 " hereafter, subscribers will receive the ' Proceedings ' in sheets, with- 

 out covers, about once a month," but we afterwards found so much op- 

 position, on the part of the subscribers, to this plan, that it was aban- 

 doned. The concluding number (3) of this volume will soon follow 

 this, and will include all Papers presented to and adopted by the So- 

 ciety up to April 1st. 18G7. 



PUBLICATION COMMITTEE. 



