644 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



ing to the end of second joint ; third joint about as long as second, rather blunt. 

 No thoracic feet. Prothoracic segment about one-third as long as broad, with a 

 roughened spur on the posterior half, the front edge quite hirsute. The markings or 

 callosities on the back are difficult to describe, but are as figured by Dr. Gissler. 



Length, 15™""; width of prothoracic segment, 4'"'"; length, 1.6'"'"; average 

 width of the body, 3.8'"'" ; length from tips of mandibles to base of head, 1.6™"'. 



Larva found under bark of sycamore tree in Brooklyn, N. Y. Received from Dr. 

 C. F. Gissler. 



Piq)a. — Plate XXIV, fig. 8, represents a Longicorn chrysalis, taken from under the 

 bark of the same sycamore tree as the larva above described, and which may possibly 

 belong to the same species. 



3. Halesidota tesaellaris Abbot-Smith. 

 Order Lepidoptera ; family Bombycid^. 



Found on the sycamore at Provideace, R. I., September 20 to 30. It 

 spun a cocoon the 26th, but died in confinement. Harris states that 

 the cocoon is oblong-oval, composed of the hairs interwoven with a 

 very little silk. The moth appears after the middle of June. 



Larva. — Body of the shape usual in Halesidota, hairs of the body delicate buff- 

 yellow ; four dorsal pencils in front light sienna brown, with two pairs of shorter 

 lateral white tufts ; a pair of whitish tufts near the end of the body. Head yellow- 

 ish brown. A row of lateral black spots above the base of the abdominal legs. 

 Length, 30"'". 



4. Heterocampa unieolor (Pack.,). 



Mr. Pilot has bred this moth from the sycamore m Ohio. He says 

 the larvae are common on the sycamore, but hard to rear. (Papilio,^ 

 li, p. 67.) Professor Riley has also raised it from the sycamore. 



5. Nepticula plataneUa Clem. 



From the beginning to the middle of July the blotches produced by 

 these larvffi may be found on the leaves of the button- wood tree or 

 sycamore. The blotch is often extended over the early portion of the 

 mine, so as to obliterate it, and again the early portion is present, being 

 a slender line from which the blotch is formed. Imago during the lat- 

 ter part of July. 



Larva. — The larva is pale green and the head pale brown, and it weaves a cocoon 

 of a reddish-brown color during the latter days of July. 



Moth. — AntenntB dark fuscous, eye-caps large, silvery. Head reddish-ocherous. 

 Forewings dark brown, with a small white, slightly silvery spot on the middle of the 

 inner margin and a very short costal streak of the same hue opposite to it. The cilia 

 very pale yellowish, and the scales behind the cilia of the same hue, tipped with 

 dark brown. Hind wings yellowish-fuscous; cilia fuscous. 



The following account is taken from Clemens' Tiueina : 



I ascertained, during the fall of 1861, that there is more than one species of NejHictda 

 that mines the leaves of the sycamore tree, and that all of them are double-brooded. 

 The first brood may be taken early in June and July, and the second during the latter 

 part of September and early in October. 



The mine and larva of one species are described in the November and December 

 number of the present work for 1861, page 83, and the imago in the January and 



