80 PAPERS BY DR. B. CLEMENS. 



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 and moniliform, with the an- 

 terior rings slightly dilated, with the segments rounded and 

 distinct at the sides ; with three * thoracic feet, four* ab- 

 dominal and one terminal 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 epidermis 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 through- 

 out 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 

 autenna? 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. 



* " Pairs of" is of course understood in each case. II. T. S. 

 \ I received one specimen of this from Dr. Clemens ; it is intermediate be- 

 tween our Complanella, Hub., and Margined, Haw. H. T. S. 



