126 PAPERS BY DR. B. CLEMENS. 



and one near the apex. Thorax yellowish, dusted with fuscous. 

 Antennae fuscous, slightly annulated with yellowish. Fore- 

 wings fuscous, tinted with yellowish, with a small ochreous- 

 yellow patch on base of costa, one of the same hue on the 

 middle of inner margin, extended to the middle of the wing, 

 and a band of the same hue near the tip, much angulated or 

 nearly interrupted in the middle of the wing. Hind-wings 

 fuscous. 



The generic characters of this insect approach those of 

 Evagora. The larva lives within a silken web woven on the 

 under surface of the leaves of chestnut oak. It feeds on the 

 cuticles and parenchyma of both sides of the leaf, gaining the 

 upper side by round holes eaten through its substance, and 

 just large enough to admit the body; of these there were 

 three at various points of the eaten surface. If alarmed the 

 larva immediately retreats through the opening last made to 

 the web on the under surface. The pupa is robust, almost 

 ovoid, and is contained in a slight cocoon woven on the leaf 

 on which the larvae feed. It was taken July 22nd, became 

 a pupa on the 27th, and an imago on August 8th. 



BUTALIS, Treitschke. 



B. fuscicomella. Head, face, labial palpi and thorax 

 yellowish-fuscous ; antennae purplish-fuscous. Fore-wings 

 purplish-fuscous, tinted somewhat with yellowish; cilia 

 purplish-fuscous. Hind-wings dark fuscous. 



Taken on wing in June. The egg is ellipsoidal; dirty 

 white ; investing membrane thin and covered with punctures, 

 variolate. 



Fore-wings with three subcosto-marginal branches, the apical 



simp le : apex po in ted. 



B.flavifrontella.* Head and face pale brownish-ochreous. 

 Labial palpi dark fuscous. Thorax and antennae purplish- 



* Of this I received one specimen from Dr. Clemens ; it is perhaps identical 

 with B. lasilaris, Zeller (Linn. Ent. x. 230). The exp. al. is 5 lines. 

 H. T. S. 



