1588 THE BUTTERFLIES OF NEW ENGLAND. 



When at rest, the fore wings diverge at an angle of from 20° to 25°, the 

 inner margin resting on the upper surface of the more expanded hind 

 wings, which diverge at an angle of about 120° ; the antennae, viewed 

 from above, spread at an angle of from 120° to 130°, and are perfectly 

 straight ; viewed laterally, they are on a line with the plane of the body, 

 which itself is elevated antei'ioi'ly about 30° above the surface of rest ; the 

 tip of the club is bent at right angles backward. When feeding on a flower 

 it rests with all its wings raised perpendicularly but not closed. It has the 

 habit, when at rest, of giving its antennae, each independently, a sort of 

 circular motion, mainly fi'om above, downward and forward, and reversely. 

 Desiderata. The geographical distribution of this butterfly is still in- 

 sufficiently known ; especially should the inland states of the Alleghanian 

 fauna and the central parts of New England be searched for localities. It 

 is plain that its range is much more extended than we know, for a glance at 

 our map shows it. Although all the early stages are known, our informa- 

 tion regarding its periods are at fault and some of the data conflicting. 

 Has any one ever captured a specimen of a second brood in the open coun- 

 try ? Observation of the natural habits of the caterpillar out of doors is 

 desirable to explain the exceptional flocculence of the body, and the cater- 

 pillar's custom of partially open life. Since its postures show some interesting 

 affinities to those of Ancyloxipha, a description of its peculiarities of 

 flight is more than usually desirable ; no parasites are known. 



LIST OF ILLUSTJiATIONS.—AMBLYSClETES VIALIS. 



General. Chrysalis. 



PI. 29, fig. 6. Distribution in North America. p]. §5, fig. 40. Chrysalis. 



^99- Imago. 



P1.66, fig. 17. Outline. 

 1..J 69:7. Micropyle, 



PI. 10, fig. 4. Male, both surfaces. 

 _ ^ .„ 37: 3. Male abdominal appendages. 



Caterpillar. ^.^_ Neuration. 



PI. 77, fig. 24. Mature caterpillar. 



58 : 7. Side view of head and appendages 



80:46-50. Front views of head, in all the , , •.,, i . •, < .r, » . ^^-^ 



enlarged, with details of the structure of the 

 stages. ,g^g_ 



53. Head of citerpillar in egg as seen ai ki t^ * •• ^ . -^u ■„ 



, ,, , ,, 61:57. Extremity of tongue with papillae 



through the egg she . ^ ^ ^ 



