34 Journal New York Entomological Society. [Voi. viir. 



Pupa in a leaf, very dark brown. 



Thermecia paucula Jfa//c. A light green semi-looper, a narrow 

 band of pinkish white along each side, in the center of which is a fine 

 line of pink ; a yellowish line between each segment. Tubercles 

 minute, white, with whitish hairs. Head green, shining. When 

 young the larva is entirely light yellowish green. 



Pupa chestnut brown. 



Food-plant. — Wild creeper growing on rocks. 



Hypena obditalis Walk. A green semi-looper with a whitish 

 line down each side ; a pale yellowish line between each segment. 

 Setae very fine, black. 



Pupa very dark brown. 



PRELIMINARY NOTES ON THE LARV^ OF THE 

 GENUS ARCTIA. 



By Harrison G. Dyar.* 



I think it would be very appropriate if the members of this society 

 should attempt to find out what is still unknown about the life histories 

 of our species oi Arctia or Euprcpia, as the genus is now called. It 

 is a specially interesting one as we have a number of closely allied 

 forms, the exact limits of which are still imperfectly known. The 

 larvae resemble each other closely, yet present some well marked 

 points of difference. As the species are all rather common and so 

 many of them live in our usual collecting grounds, it ought to be 

 comparatively easy to find them and work the matter up. As a prelim- 

 inary to this w'ork, I will briefly review for you how our knowledge 

 of these larvfe stands at present. You will be able thus to avoid du- 

 plication of work, and also to correct the previous work, where it has 

 been erroneous. As some of you may receive eggs of larvae from cor- 

 respondents in different states, I will review all the matter that is ac- 

 cessible concerning the North American species. Some of this, 

 gathered from the material in the National Museum and the notes of 

 the Department of Agriculture, has not been published. 



*Read before the New York Entomological Society, December 20, 1898. 



