ENTOMOLOGICA 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



THE ACADEMY OF NATURAL SCIENCES, PHI) 



VOL. XXXII 



NOVEMBER, 1921 



No. 9 



CONTENTS 



Crampton A Comparison of the Ter- 

 minal Abdominal Structures of In- 

 sects and Crustacea 257 



Kox Two Orthoptera New to New Jer- 

 sey, with Comments on their Local 

 Habitats 264 



Champlam and Knull Notes on Cole- 

 optera in Pennsylvania, New York 

 and Connecticut 270 



de la Torre-Bueno New Records of 

 Aquatic Hemiptera for the United 

 States, with Description of New 

 Species 273 



Skinner Atrytone kumskaka Scudder 



( Lep., Rhop. ) 276 



Editorial The Abstracting of Scienti 



fie Papers 278 



A New Entomological Publication 279 



Change of Address Haimbach 279 



The McPherson Scientific Expedition. 279 

 The Thread Worm Gpngylonema ho- 

 minis Introduced into Man by In- 

 sects? 280 



Hutchison The Mulford Biological 



Exploration of the Amason Basin.. 281 

 Leussler Gonepteryx clorinda in Neb. 



( Lep., Rhop. ) 281 



Entomological Literature 282 



Review Fernald's Applied Entomo- 

 logy 285 



Review of Oberthiir's Etudes 286 



Review Ealand's Insect Life 286 



Doings of Societies Ent. Sec. Acad. 

 Nat. Sci. (Col., Orth., Hem.) zSS 



A Comparison of the Terminal Abdominal Structures 

 of Insects and Crustacea. 



By G. C. CkAMi'Tnx, Ph.D., Massachusetts Agricultural 

 ( 'ollege, Amherst, Mass. 



(Plate Y I 



Other papers of this series, dealing with a comparison of the 

 external structures of insects with those of related arthropods 

 (from the standpoint of phylogeny), have been published in 

 Vol. 28 of Psyche, in Vol. 29 of the Journal of the X . V. Ent. 

 Socictv. and in the Transactions of the /:/. Society of London 

 for 1921 (also a restuiK in the 5O/z Rpt. I-'ut. Society of 

 Ontario for 1919). During the progress of these investigations, 

 it has become increasingly apparent that a knowledge of the 

 Crustacea is absolutely indispensable for determining the sig- 

 nificance of the parts in insects, since in every case it has been 

 the Crustacea, rather than the "Myriopoda" or other arthropods, 

 which have furnished the key to the interpretation of the 

 structures of insects; and it is indeed surprising thai ento 



257 



