CONTENTS 



On a Collection of Myriapoda from Costa Rica. By Ralph V. 



Chamberlin 185 



(Issued June 20, 1914) 



Studies in the Genus Thanaos. By Henry Skinner . .195 



(Issued August 3, 1914) 



On a Collection of Crane-flies from British Guiana (Tipulidae, 



Diptera). By Charles P. Alexander . . . .223 

 (Issued September 25, 1914) 



