MEMOIRS 



OF THE 



BOSTON SOCIETY OF NATURAL HISTORY; 



VOLUME IV, NUMBER IX. 



NEW TYPES OF COCKROACHES FROM THE CARBONIFEROUS DEPOSITS OF THE 



UNITED STATES. 



NEW CARBONIFEROUS MYRIAPODA FROM ILLINOIS. 



ILLUSTRATIONS OF THE CARBONIFEROUS ARACHNIDA OF NORTH AMERICA, 

 OF THE ORDERS ANTHRACOMARTI AND PEDIPALPI. 



THE INSECTS OF THE TRIASSIC BEDS AT FAIRPLAY, COLORADO. 



WITH PLATES XXXI-XLIII. 



By SAMUEL II. .SCUDDER. 



BOSTON : 



published by tue society. 

 September, 1890. 



