ANNETTE F. BRAUN. 335 



The species occurs probably throughout the entire eastern half of 

 the United States upon various species of oak. The mine is a flat 

 blotch upon the upperside of the leaf, similar to that of L. conglom- 

 eratella Zell. 



Quercivorella is closely related to ulmella and conglomeratella but 

 may be distinguished from both by the fact that the dorso basal 

 white streak extends only a short distance beyond the middle. The 

 dorsal margin is of the ground color from here to the oblique streak, 

 which occupies the same position as the deflexed portion of the 

 dorso-basal streak in conglomeratella and ulmella. 



Lithocolletis mediodorsella sp. nov. 

 Plate XXIII, Fig. 19. 



Antennae whitish, spotted above with brown. Face and palpi white. Tuft 

 whitish, ocherous toward the sides. 



Thorax and forewings reddish ocherous. At the basal third is an oblique 

 white costal streak, black margined externally. A broad white stripe through 

 the middle of the thorax is continuous with a dorso-basal white stripe extending 

 to beyond the middle of the dorsal margin. From its end a white dorsal streak 

 extends obliquely upward uniting in the middle of the wing with a similar cos- 

 tal streak to form a somewhat interrupted angulated fascia of which the external 

 dark dusting at the angle is produced backwards on a white ground for a short 

 distance. At the apical third is a white costal spot, with a few dark scales exter- 

 nally, and opposite it is a long, oblique dorsal streak, dark margined externally 

 and uniting with a curved streak, concave toward the costa, which often extends 

 through the cilia, and forms the internal border to the dusting of the apex, 

 which is black upon a white ground. Cilia ocherous, becoming gray toward the 

 tornus, with a dark ocherous line through their middle. Expanse 7-8.5 mm. 



Hindwings and cilia grayish ocherous. Abdomen grayish ocherous, with pale 

 anal tuft. Legs whitish, shaded with brown ; hind tarsi very faintly tipped 

 with black. 



Type. No. 12006, U. S. N. M. 



Sonoma County, California. Described from two specimens, one 

 bred on oak by Mr. A. Koebele, the other collected by Lord Wals- 

 ingham, May 22-23, 1871. 



Closely related to quercivorella Cham., from which it differs, how- 

 ever, by the presence of the oblique dorsal streak at the end of the 

 dorso-basal streak. It is also of somewhat greater expanse. 



Lithocolletis australisella Chambers. 



Plate XXIII, Fig. 20. 



Lithocolletis australisella Chambers, Bull. Geol. Surv. Terr., iv, 103, 1878. Dyar, 

 Bull. 52, U. S. Nat. Mus. 1902, No. 6297. 



TRANS. AM. KNT. SOC., XXXIV. OCTOBER, 1908. 



