SATYRIXAE: OENEIS JLTTA. 155 



O. aello of the EiiroiJcan Al[)s is more nearly allied to this species than 

 to any other Em-opcan form or to O. semidea. Indeed the two species 

 discussed in this work belong to distinct sections of the genus. 



Habits, flight, and posture. I have only once seen jutta in flight, 

 and then only for a second as one flew to my feet and was captured. Mr. 

 Braun tells me that it has rather a quick flight, is hard to catch, rarely 

 rises above the tops of the kalmia iuid other low bushes of the swamp, 

 seldom alights, and is fond of circling around the clumps of juniper which 

 occur here and there. AMien it alights it is generally upon the tree trunks, 

 and in the [)airing season, the female, according to Holmgren, usually 

 rests high up on the tree, and it is in this search after females that the 

 males fly around and up the trees. 



It is easily startled ; when it walks, it moves by little starts, with each 

 movement advancing less than a fourth of its length, the wings parted from 

 each other either less than 45° or about 100° : and if blown upon when at rest 

 it at once tucks its fore wings between its closed hind pair to reduce the 

 surface affected : but seems hardly to be disturbed when the antennal tips 

 arc tickled with a hair. 



AVhon at rest for the night, hanging from the muslin roof of the enclosure 

 in which it was placed, I noticed that its legs were sprawled widely apart, 

 the wings hung back to back, the costal edge of the front pair a little below 

 that of the hind pair, and the antennae, arched about equally at the two 

 ends, the main stalk at an angle of about 100° with the costal edge of the 

 fore wings, were raised above the plane of the body by 45°, and divari- 

 cated about 100°. Resting during the day it assumes much the same posi- 

 tion, but the fore wings are then brought forward so that the costal edge 

 is at right angles to the axis of the body and the antennae are parted at 

 rio-ht angles. 



Enemies. We know nothing as yet of any parasites of this insect ; but 

 Fyles states that he once lost a specimen through a kingbird, Tyrannus 

 tyrannus, which "gave chase to the butterfly, and, after much doublinii' 

 and twisting, caught it and disposed of it effectually." 



Desiderata. Our main need is a better knowledofc of the later stao-es 

 of the caterpillar and of the chrysalis, and the characteristics of its pupation 

 with the habits of the caterpillar in the spring : the existing descriptions 

 are quite insufficient. AA'here in a morass, mostly under water, can the 

 half grown lar\a find a suitable place to hibernate ; and where in the still 

 higher waters of spring can the caterpillar securely pupate ? jNIr. Edwards 

 found that caterpillars hatched from June eggs sent to West Virginia from 

 Montreal would eat nothing, but seemed disposed to hibernate at once. Is 

 this ever the case in their home ? The difference between the observations 

 of Holmgren and Fyles also needs explanation. Do the differing accounts 

 indicate that the insect is sometimes one year and sometimes two years in 



