2 U.S. NATIONAL MUSEUM BULLETIN 27 7 



national Commission on Zoological Nomenclature (ICZN, 1963b) and 

 the species described in this genus revert to Scenopinus. Lepidomphrale 

 Krober (1913), with the single species niveus Becker, is returned to 

 Scenopinus where it agrees in all respects with other members of the 

 Albincinctus group. Archiscenopinus Enderlein (1914), with the single 

 species niger DeGeer, is in all ways, except for the widely separated 

 eyes of the male, similar to other members of the genus Scenopinus in 

 the Fenestralis group. Paromphrale Krober (1937) containing the 

 species glabrifrons and antennatus show no genitalic characters that 

 would separate them from other members of the genus Scenopinus and 

 other members of the Fenestralis group. Omphralosoma Krober (1937) 

 cannot stand because squamosa and albifasciatus agree more closely 

 with the Albicinctus and Velutinus groups respectively, than with each 

 other, and the presence of scales on the body hardly warrants their 

 separation. Lucidomphrale Krober (1937), with the single species 

 lucidus, agrees with the members of the Albicinctus group except for 

 the long aedeagal parameres of the male. 



Acknowledgments 



This study has taken several years to accomplish and would have 

 been impossible without the cooperation and helpful suggestions of 

 many colleagues. I wish particularly to thank Dr. Willis W. Wirth 

 and Curtis Sabrosky of the U. S Department of Agriculture, Washing- 

 ton, D. C, for their enthusiastic encouragement of this study and for 

 their many helpful suggestions in the preparation of this manuscript; 

 Dr. George M. Worrilow, Dean, School of Agriculture, University of 

 Delaware, and Dr. Morris Cover, Director, Delaware Agricultural 

 Experiment Station, for their assistance in obtaining grants from the 

 General Faculty Research Funds and General Research Funds — 

 Agricultural Experiment Station, which made possible an opportunity 

 to visit museums in England, France and Belgium, to study the type 

 specimens not available on loan; Dr. Dale F. Bray, Chairman, Depart- 

 ment of Entomology and Applied Ecology, University of Delaware, 

 for his encouragement and support of this study. Publication No. 366 

 of the Department of Entomology and Applied Ecology. 



I also wish to express my appreciation to the following persons and 

 institutions for the unselfish loan of material, including types with 

 permission to dissect genitalia, which helped to make this study possi- 

 ble. The abbreviations listed below are used in parentheses throughout 

 this text. 



AMB Allan M. Barnes collection, State of California Department of Public 



Health, Berkeley, Calif. (A. M. Barnes). 

 AMNH American Museum of Natural History, New York, N. Y. (J. G. 



Rozen). 



