314 



cles of the twelfth segment are two very minute ones. 1 Stigmata black. 

 Feet and ten prolegs purple brown. Posture like the larva of Eudryas gra- 

 ta. 2 Length, when extended, over one inch. 



Cocoon of silk interwoven with fragments of wood from the box in which 

 it was kept, Aug. 7. 



Found the same larva on a fence, Sept. 6, 1841. It made a cocoon of 

 folded leaf lined with a thin tissue of silk, against bottom of box, Sept. 8, 

 1841. This larva was destroyed by a parasite, which threw off the larva 

 skin and disclosed a dark brown chrysalis pod, from which there came the 

 perfect Anojnalon, June 10, 1842. 



Sept. 7, 1849. On plum tree. Body laterally compressed, that is, higher 

 than wide, green. Head white, banded at the sides with purple, and 

 spotted or dotted with black; a triangular brown spot edged at sides with 

 white on top of first segment; an oval brown spot edged with white on top 

 of second segment; two slender, blackish lines thence to tail, approximated 

 on the third, fourth, fifth and sixth segments, separated on the seventh and 

 eighth segments, and enclosing there on each a lozenge shaped, brown spot, 

 gradually approximated again on the ninth and tenth, and proceeding close 

 together to the anal prolegs. 



Two minute, reddish, setiferous tubercles on each of the segments except 

 the first and twelfth segments; those on the second being elongated ; and 

 those on the eleventh being situated on the top of an elongated conical pro- 

 jection. 



The same larva on mountain ash, winged June 14; another June 6. 



Acronycta salicis Harr. MSS. 



Caterpillars found on various plants in meadows, and on the Rosa Caro- 

 lina, Aug. 1, 1838. Length one and one half inches. 



Black; head, posterior half of the last segment, prolegs, body beneath 

 and on each segment in a transverse series ten tubercles, radiated" with 

 rusty spines, crimson ; thi'ee of the tubercles on each side are above the 

 spiracles and two below them, and contiguous to each other; on each side 

 between the first dorsal tubercles a longitudinal series of white spots; 

 and between the spiracles, which also are white, a series of ten large, yel- 

 low, reniforna spots, small before, and largest on the sixth, seventh and eighth 

 segments, and a smaller circular one on the eleventh segment. Lip and 



1 The tubercle on the last segment is bifid and setiferous, and longest of all. Those 

 on the second segment next in length. 



2 Sometimes rests with the first pair of prolegs elevated. Often rests with the head 

 bent down and turned sidewise below the plane of the legs. 



