108 THE CANADIAN ENTOMOLOGIST 



The web is, however, in large part confined to the half of the leaf 

 upon which the tube opens. The tube is of but little greater 

 density than the web and is chiefly defined by the frass which 

 collects along its sides. 



The cocoon is a thin oval silken afTair, spun between two 

 leaves or on the ground, and is very similar to that of the species 

 of Chrysopeleia. 



The larvae from which the above notes were made were col- 

 lected July 3 near Cincinnati; one imago appeared July 30. A 

 later generation of larvae produces the images which appear in 

 May of the following year. 



Psacaphora engelella Busck. 



Psacaphora terminella Westw. 



? Syn. Mompha engelella Busck, Can. Ent., XXXVIII, 123, 

 1906; Proc. Ent. Soc. Wash., XI, 96, 1909. 



At the time of describing Psacaphora (Mompha) engelella, 

 Mr. Busck noted its very close resemblance to Psacaphora {Mompha) 

 terminella Westw. of Europe. I have succeeded in rearing a 

 number of specimens, and the life history is identical with that 

 of the European P. terminella. The larva mines leaves of Circaea 

 lutctiana L. The earliest mine is a narrow thread-like, sometimes 

 spiral, tract, which abruptly enlarges into a small blotch. Several 

 successive blotches are formed, the last occupying almost half of 

 one of the larger leaves. The mines were collected July 3. At 

 this time many of the larva^ were full grown and ready to leave 

 the mines preparatory to pupation. The cocoon is yellowish, 

 flattened, tapering at the posterior end, broadly rounded at the 

 anterior end where the two sides form a lip-like opening to admit 

 of the emergence of the adult. Images emerged July 22-27. 



These bred specimens agree in all respects w4th a number of 

 flown specimens in my collection from one of the type locaUties 

 (Pittsburg). As would be expected, the golden colour of the bred 

 specimens is a little deeper — more orange — and the metallic 

 margining of the basal black blotch is more conspicuous. 



Although I have no specimens of the European P. terminella 

 for comparison, the fact that the descriptions are practically the 

 same, and that the food plant is native both to Europe and North 

 America, strongly support the synonymy suggested above. 



