AUTHOR 3 ABSTRACT OF THIS PAPER ISSUED 

 BY THE BIBLIOGRAPHIC SERVICE, SEPTEMBER 11 



THE CASTES OF TERMOPSIS^ 



CAROLINE BURLING THOMPSON 



Department of Zoologij, Wellesley College 



NINE TEXT FIGURES AND TWO PLATES 



CONTENTS 



Introduction 495 



Material and methods 496 



The castes 497 



Termopsis angusticoUis Hagen 497 



Development 499 



The first form of T. angusticoUis 500 



The nymph of the first form 500 



The winged adult of the first form 509 



The enlarged adults of the first form 510 



The second form of T. angusticoUis 512 



The nymph of the second form 513 



The young adult of the second form 514 



The enlarged adult of the second form 515 



The third form of T. angusticoUis 516 



The soldier of T. angusticoUis 519 



Discussion 525 



Summary 529 



Bibliography , 530 



INTRODUCTION 



Termopsis angusticoUis and T. nevadensis are found along the 

 Pacific slope of the United States and in British Columbia, and 

 the latter species extends into Montana (Banks and Snyder, '20) . 

 The two species frequently occur in the same locality and in 

 close proximity; at Pacific Grove, California, the writer has found 

 several colonies of the two species, less than a foot apart,, in one 

 log. Termopsis is the largest North American termite and also 

 the least injurious. The nests or galleries are found in partly 

 decayed wood in forests, usually just beneath the bark, and not in 



1 Owing to the death of the author, proof of this article has been read by the 

 editor and Dr. T. E. Snyder. 



495 



