UBYTHEA. 
mon species And yet the late Mr. D. B. Walsh, in a letter to me dated April. 
3 ’ , "Y S ’ t latthe month 01 June preceding, he had found this species “ in 
swarms near Jonesborough, in Southern Illinois, “along the travelled road.” 
Mr Scudder gives Dr. Harris as authority for its having been found in Massachu- 
“ me that it has also been found so far north as the neighborhood 
ol the White Mountains, in New Hampshire. Mr. Saunders mentions its occur¬ 
rence in Ontario, Canada. In West Virginia I have seen a few individuals every 
season, but have regarded the species as one of the rarest. On 1st August, 1872 
1 noticed a female fluttering about a small tree of Celtis occidentalis, in my »ar- 
den at Goalburgh, alighting frequently on the ends of the branches, an*d evi¬ 
dent i ovo-positing. She made, perhaps, a dozen descents for this purpose before 
Ind oTthT' , l he eg f T ": ere laid sin sl v “ the immature leaves at extreme 
S ol the branches, and I found, on examination, that nearly every branch had 
its egg. On the 5th, several of these eggs had hatched in the glass to which I 
nul transferred them. But the larvm were exceedingly delicate, and one after 
another dropped ofl the leaves till all ivere dead. I have since experienced the 
"tl w! U ? 111 Sta f mg th6Se krV£e in eonfin ement, though those of most 
°, lei mtterflies can be reared from the egg with great certainty. But I was 
<o e to replenish the stock from the tree when the larvm had become a few davs 
old and thenceforward had no difficulty whatever. It was easy to discover the 
feeding place of one of them from their habit of stripping the sides of the leaf 
at its extremity, leaving the midrib untouched. There is something in their 
attitude when at rest that distinguishes them from other butterfly larval. For 
lours t ley remain with the head and upper segments thrown back and arched 
alter the manner of the typical SphinguM. Or the anterior segments are raised 
swoTlen'and tT '"nf ^ S6C ° nd ’ third ’ and P osterior segments being 
. ollen, and the middle ones flattened dorsally, an odd habit I have not ob¬ 
served m any other species. In 1873, I again found eggs and larval upon the 
same 3 oung tree, but earlier m the season, making it certain that there were 
two or more broods of the imago. The first noticed were on 28th June, and 
ficsli eggs were found at intervals up to 1 st September. 
When about half grown, the larval in confinement might be seen slowly mak- 
ng their way up the side of the glass, by means of a zigzag ladder which they 
spun as they went, and the glass became well coated ivith this kind of web 
After the fourth moult, they began to fasten the leaves loosely together and 
fetched several threads across the top of the glass. These threads were quite 
strong enough singly to bear the weight of a caterpillar, and I have seen one 
cioss the diameter of the glass in this way, walking feet upward; in this case 
16 aveller pr0ceeded cautiously, stopping several times and throwing a thread 
