REVISION OF THE OECOPHORIDAE — CLARKE 39 



lege,« for his keen interest, the identification of host plants, and the 

 coUection of very interesting material; to Dr. Harry F. Clements, of 

 the same department,^ who kindly arranged for greenliouse facilities 

 for rearing purposes; and to Miss Grace Val Sisler for much kmd 

 help in cataloging and recording. In addition Dr. Braun kindly sub- 

 mitted notes on specimens in her collection and material for study. I 

 wish also to express my thanks to Nathan Banks, of the Museum of 

 Comparative Zoology, Cambridge; to E. T. Cresson, Jr., and J. A. G. 

 Rehn, of the Academy of Natural Sciences of Philadelphia, for mak- 

 ing it possible for me to study types of Chambers and Clemens re- 

 spectively; and to the National Research Council for a grant-in-aid, 

 which enabled me to obtain needed equipment and supplies and to 

 take many field trips in Wasliington, Idaho, and Oregon. 



The drawings for this paper were made by the author. Whenever 

 possible the genitalia were figured from the type, either male or 

 female, and where the type was not available, from paratypes or 

 authentically determined specimens. I have been able to examine 

 the genitalia, both male and female, of all the genotypes and of either 

 male or female, or both, of all the species of Agonopterix and_ De- 

 pressaria except A. endryopa (Meyrick), A. murmumm (Meyrick), 

 D. nymphidia Meyrick, D. corystopa Meyrick, Borkhausenia axiiculata 

 Meyrick, and Paratheta astigmatica Meyrick. I am unable to recog- 

 nize these species. 



For most of the Canadian records no reference is made to the sex 



of the specimens. These records were sent to me by Dr. McDunnough. 



The following keys to the genera include all genera discussed by 



Busck (1908), with the addition of two old and six new genera 



described in this paper. 



ARTIFICIAL KEY TO THE GENERA 



1. Basal segment of antenna with pecten (figs. 3, 4, 6, 9, etc.) 2 



Basal segment of antenna without pecten (figs. 7, 10, 14, 18, etc.) 13 



2. Second segment of labial palpus long, straight, porrect (fig. 6) 



12. Pleurota (p. 230) 



Second segment of labial palpus otherwise (figs. 3, 4, 9) T" oox 



3. Antenna longer than fore wing 13- Carcina (p. 233) 



Antenna shorter than fore wing ','"," nA^\ 



4. Veins 7 and 8 of fore wing coincident (fig. 55) 16. Decantha (p. 241) 



Veins 7 and 8 of fore wing not coincident ^ 



5. Veins 2 and 3 of fore wing stalked (figs. 29, 44, 45) o 



Veins 2 and 3 of fore wing separate 



6. Costa of fore wing arched; costa of hind wing arched, veins 4 



and 5 well separated (figs. 29, 45) 



Costa of fore wing straight or slightly concave; costa of hind 

 wing concave, veins 4 and 5 closely approximate at bases 

 (f^g 44) 2. Martyrhilda (p. 12o) 



• Now at the Department of Botany, University of California, Berkeley. Calif. 



• Now at the Department of Botany, University of Hawaii, Honolulu. 



