184 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lie 



and P. griseiceps (Aurivillius), have been confirmed by the additional 

 nine species from Central Chile examined by the present author. 

 Only in the description of the wing venation are some modifications 

 necessary. In the original diagnosis of Proeulia, the veins R and Mi of 

 the hindwing were described as stalked, and they are similar in most of 

 the species treated in the present paper. In the new species Proeulia 

 triguetra, however, these veins are either variously long-stalked, or 

 originating connate, or even slightly separate, although closely ap- 

 proximated to each other in the basal portions. Also, veins M3 and 

 Cui of the hindwing are either connate (as in P. robinsoni and P. 

 griseiceps) or slightly separate at origin. In view of the observed 

 individual variation of these characters in one and the same species, 

 it seems to be expedient to extend the diagnosis of the genus to include 

 all these modifications. 



The study of the nine additional species assigned to this genus has 

 demonstrated some important specific modifications in the shapes of 

 certain parts of the genitalia, as is seen from the descriptions and 

 photographs in this paper. The most unusual is the process that 

 projects from the ventral surface of the bursa copulatrix, exhibiting a 

 greater reduction in Proeulia griseiceps than in P. robinsoni. In P. 

 auraria (Clarke), P. chrysopteris (Butler), and P. apospasta, new 

 species, this process is very short. It is quite possible that in some 

 species not yet known this reduction may appear to be even more com- 

 plete. In P. leonina (Butler) and P. aethalea, new species, the above 

 process is especially well developed. The location of this process close 

 to the inception of the ductus seminalis and its connection with the sur- 

 rounding sclerotization supports the identification of this structure as 

 a cestum, developed in the present case as an external protrusion. The 

 area around the ostium oviductus generally is sclerotized somewhat in 

 all species of Proeulia. The corresponding sclerite is reversely sub- 

 cordate as a rule and probably represents a modification of the papillae 

 genitales known in some other families of the Lepidoptera (Kusnezov, 

 1916). This structure still is studied poorly in the Tortricidae and 

 probably will be found in other genera of this family. 



It is a pleasure for the author to express his gratitude to Dr. J. F. 

 Gates Clarke of the U.S. National Museum and Mr. J. D. Bradley of 

 the British Museum (Natural History) for the materials placed at his 

 disposal and to Dr. J. G. Rozen and Dr. F. H. Rindge of the American 

 Museum of Natural History for providing the necessary working 

 facilities. The work on this paper was done under the auspices of the 

 National Science Foundation ; many of the specimens involved in the 

 study were collected by Dr. Clarke during field investigations sup- 

 ported by the National Science Foundation. 



