82 PAPERS BY DR. B. CLEMENS. 



T. citrinipennella.* Antennae pale fuscous; head and 

 thorax yellowish, tinted with reddish-saffron. Fore-wings 

 bright yellow from the base nearly to the tip ; apical portion 

 reddish-ferruginous. Hind-wings dark grey, with a fuscous 

 patch near the base; cilia pale fuscous. The male de- 

 scribed. 



There is but little difference between this and the fore- 

 going species, either in the perfect or larval state. The 

 larva mines the upper surface of oak leaves, in September. 

 The head is dark brown; the body yellowish-green, with a 

 double dark-brown macula on the dorsum of the first ring ; 

 vascular line very narrow and dark green. A more careful 

 examination than I have given these insects may prove them 

 to be the same, or the latter a variation. I have but a few 

 of each of them. The imago appears early in May, and a 

 spring brood will be found in early summer. 



PHYLLOCNISTIS, Zeller. 



Head smooth, elongated above, and clothed with im- 

 bricated scales. Front with scales closely appressed, slightly 

 retreating and broad at the clipeus. Forehead or vertex 

 globosely rounded. Ocelli none. Eyes scarcely visible in 

 front, and partially covered with scales. Antennae simple, 

 one-third less long than the anterior wings ; basal joint 

 scarcely with an eye-cap, somewhat enlarged and flattened, 

 but smooth and squamose. Maxillary palpi none. Labial 

 palpi very slender, and drooping (in the living insect they 

 are ascending). Tongue very slender, naked and scarcely as 

 long as the anterior coxae. 



The anterior wings almost caudate, the posterior lanceolate. 

 In the anterior wings the discoidal cell is acute behind; the 



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

 tween our Complanella, Hub., and Margined, Haw. The description would 

 be improved by adding, " there is a faint gray spot at the anal angle of the 

 anterior wings." The exp. al. (omitted by Dr. Clemens) is 4 lin. H. T. S. 



