THE COMPARATIVE MORPHOLOGY OF THE ORDER 

 STREPSIPTERA TOGETHER WITH RECORDS AND 

 DESCRIPTIONS OF INSECTS. 



By W. DwiGHT Pierce, 



Of the Bureau of Entomology, United States Department of Agriculture. 



INTRODUCTION. 



Since publishing in 1911 ^ a number of additional species and new 

 records of the Strepsiptera as a supplement to the Monographic Re- 

 vision in Bulletin 66 of the United States National Museum, enough 

 new material has been accumulated to occasion this second supple- 

 ment. It is the expectation of the writer from time to time to con- 

 tinue this series of papers summarizing all the known material on 

 this interesting order of parasitic insects. 



Material has been received from T. L. Jones (Porto Rico), N. 

 Kourdumoff (Russia), T. B. Fletcher (India), F. Muir (Hawaii), 

 H. G. Champion (England), J. P. Kryger (Denmark), S. E. Crumb 

 (Tennessee), and H. F. Loomis, R. C. Shannon, and J. C. Crawford 

 (Maryland), and much of interest has been recently found in the 

 new acquisitions of the United States National Museum. Determi- 

 nations of hosts have very kindly been made by Messrs. Crawford, 

 Rohwer, Viereck, and the late Mr. Heidemann. 



A large number of errata and corrections are noted herein. The 

 writer is under obligations to Dr. Karl Hofeneder (Austria) for cor- 

 rections of many of the errors, specially the bibliographic. The most 

 serious errors occur in the Genera Insectorum in the reference to 

 figures and were due to a recasting of the plates by the editors and 

 the addition of many small figures after the page proofs had been 

 seen. No mention of these figures was made in the text or explana- 

 tion of plates. 



The same headings and letterings of paragraphs are used as in 

 Bulletin 66. 



1 Proc. U. S. Nat. Mus., vol. 40, No. 1834, May 17, 1911, pp. 487-511. 



Proceedings U. S. National Museum. Vol. 54— No. 2242. 



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