Mann.] 164 [Nov. 26, 



When I examined the pinned specimen, although it was still 

 alive, the right hind wing was turned so that it pointed forward, and 

 every time that I tried to push it into its proper position it sprang 

 back. All the other wings point backwards, but could be moved. 

 The wings could not have been of any use for flight. 



The antennae are fully 6 mm. long, possibly a little more. I 

 counted in the left antenna fifty-one joints. Each of the joints 

 bears upon each side a tuft of fine hairs 0.4 to 0.£ mm. long. 



To make sure that this was a female, I pressed the body so as to 

 cause the terminal segments of the abdomen to protrude. The anal 

 opening was protected on each side by a narrow chitinous band, with 

 regular outline, as in other females. There -was no semblance of 

 clasping organs, so far precluding the idea of hermaphroditism. On 

 pressing the abdomen more forcibly I burst it, and dislodged some 

 eggs. Other eggs which were forced out remain attached to the mass 

 of viscera, and can be seen now on the specimen. These eggs are 

 clearly similar to the well-known eggs of the species. I carried the 

 fresh and living female to Mr. S. H. Scudder, who acknowledged 

 that my observations were correct. The specimen is preserved in 

 my collection (Written No. 3035). 



On page 465 of Harris' " Treatise on Some of the Insects Injuri- 

 ous to Vegetation," edition of 1862 (page 335, 1841 ; page 362, 1852), 

 Harris says that the chrysalis of the female of A. pomeiar la is "desti- 

 tute of a covering for wings, which is found in the chrysalis of the 

 males." I find a like statement in Riley's Second Missouri Report 

 (1870), page 97, probably a quotation, although the main subject of 

 Mr. Riley's article seems to be A. vernata. 



On the 17th of June, 1872,1 collected two or three varieties of 

 larvae descending from elm and apple trees, and undertook to raise 

 one hundred and fifty of these larvae to the imago state. I paid little 

 attention to them for more than a year, at the end of which time I 

 found in my jars one hundred and forty earthen cocoons and twelve 

 excluded female imagos of A. pometarla, then erroneously called A. 

 vernata. 



I opened about 30 cocoons from one of the jars into which I had 

 put larvae of a certain description, marked in my collection No. 3057, 

 and found among them but ten well-formed and undeveloped pupae, 

 for n most of them the imagos were out of the pupa-skin and dead. 

 All the developed imagos which I determined were females. A few 

 of the undeveloped pupae were entirely misshapen, or partially de- 



