IV BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



considerable work to put it into form suitable for Museum publication, 

 and this was undertaken by Mr. Busck, who was thoroughly acquainted 

 with Mr. Engelhardt's intentions, scheme of classification, and method of 

 description. He completed this task for his friend and colleague shortly 

 before his own death on March 7, 1944. Since no one but the author 

 could have supplied the proper introduction, no attempt was made to 

 prepare one. 



Thanks to the generous support of Edith F. B. Engelhardt, wife of 

 George P. Engelhardt, and of George Bliss Engelhardt, his son, it has 

 been possible to publish the 16 plates of colored figures which Mr. Engel- 

 hardt had hoped to have included with his text. Mrs. Engelhardt and her 

 son have borne the entire cost of engraving and printing these colored 

 plates. The drawings for them were done for Mr. Engelhardt by Mrs. 

 William Beutenmiiller and Mrs. Mary F. Benson, Mrs. Beutenmiiller 

 drawing figures 127, 128, 129, 142, 143, 144, 145, 146, 148, 150, 151, 155, 

 156, 160, 161, 162, 166, 171, 177, 180, and 186 and Mrs. Benson the 

 remainder. 



The publication of the manuscript is timely and appropriate. The family 

 contains more than a dozen American species of considerable economic 

 importance, these being known to the orchardist, gardener, and forester 

 under the names peachtree borer, persimmon borer, strawberry crown 

 moth, grapevine root borer, maple bark borer, ash tree borer, hornet moth, 

 squash borer, etc. Their food plants include many kinds of cultivated 

 fruits, shade and forest trees, as well as wild species, and the widespread 

 damage inflicted by their larvae has long been the serious concern of eco- 

 nomic entomologists. As a group these moths have for some time stood in 

 need of the revision and nomenclatorial clarification that this work sup- 

 plies. The paper will be equally useful to the student, the collector, the 

 field naturalist, the economic entomologist, and the systematic lepi- 

 dopterist. 



Carl Heinrich. 



