326 PROCEEDINGS OF THE ACADEMY OF 



The head of the larva is circular in outline, thin, flat and nearly as broad as 

 the first ring. The body tapers much posteriorly, is subcylindrical andmonili- 

 form, with the anterior rings slightly dilated, with the segments rounded and 

 distinct at the sides ; with three thoracic feet, four abdominal and one ter- 

 minal pair, all of which are extremely short and are scarcely more than cup- 

 like depressions. 



The mine is usually made, if not always, near the margin of the leaf which, 

 in this case is folded and curled so as almost to conceal the separated epider- 

 mis when completed, although in the beginning it is nearly flat. It contains 

 no "frass," and an examination of the under surface reveals the presence of 

 minute, round holes, through which the larva ejects its excrement. The 

 pupa is contained within the mine, generally not in a cocoon, but the mine is 

 carpeted throughout with silk, thus closing Up the holes in the lower surface. 

 The pupa case is thrust from the mine at maturity. 



The imago reposes with its head elevated and the tips of the wings touching 

 the surface on which it rests. The antennae are thrown back beneath the 

 wings, the anterior legs folded on the breast, the insect sustaining itself by 

 means of the middle and posterior legs. 



Table of Species. 



Fore wings with isolated black atoms. 

 Solidagonifoliella; yellowish, slightly tinted with fuscous. 

 Fore wings immaculate. 

 Hind wings concolorous. 

 Zelleriella, yellowish, with reddish saffron at the tip. 

 Female ? the entire insect reddish ferruginous. 



Hind wings with a fuscous patch near the base. 

 Citrinipennella, bright yellow, reddish ferruginous at tip. 



T. solidagonifoliella . Head, thorax and antennae pale yellowish. 

 Fore wings yellowish, somewhat tinted with fuscous, with a short line of 

 black atoms along the middle of the inner margin, two small patches or much 

 scattered, isolated black atoms toward the base of the wing, a patch near the 

 tip on the inner margin, with a minute patch or a few isolated atoms on the 

 costa between the line and patch on inner margin ; at the tip are a few 

 isolated atoms. Hind wings very pale yellowish, cilia the same. The male 

 described. 



Found in the pupa state August 1st in the leaf of a species of Solidago. The 

 mine was on the upper surface and the leaf not folded. The pupa was con- 

 tained in a slight circular cocoon, attached to the upper cuticle, which formed 

 its upper walls. On August 9th the imago appeared, the pupa case having 

 been thrust through the under side of the leaf. 



T. Zelleriella . Antennae, head and thorax pale yellow. Fore wings 

 yellowish, with reddish saffron along the middle and toward the tip ; cilia red- 

 dish saffron, pale yellow on the inner margin. Hind wings bluish gray, tinted 

 with yellow externally toward the tip, cilia yellow on the exterior margin toward 

 the tip, internally pale yellowish gray. 



Female ? The head, thorax and fore wings yellowish, suffused with reddish 

 ferruginous, darkest toward the tip. Hind wings dark gray. 



The larva mines the leaves of oaks- in September, making at first a white 

 blotch on the upper surface, but subsequently the upper epidermis becomes 

 brown and the margin of the leaf curled. The head is dark brown ; the body 

 yellowish, with the dorsum of the first segment blackish, with two lateral 

 minute pale spots; a vascular dark green line. The imago appears early 

 in May, and there is, therefore, a spring brood. 



T. citrinipennella . Antennae pale fuscous : head and thorax yel- 

 lowish, tinted with reddish saffron. Fore wings bright yellow from the base 



[Nov. 



