534 



Hab.— Two specimens Alt. Olympus, Oahu, January 19th, 



1919 (Swe-:ey); bred from mines in leaves of Pelea eUiptica. 

 The mines have been found also in leaves of P. clusiaefolia 

 and some other undetermined species at Waialae, Palolo, Kona- 

 huanui, Wahiawa, and Punaluu, Oahu, and from P. sapotaefoUa 

 on Kauai. 



The mine of this species (Fig. C) is made at first along 

 the margin of the leaf. As it enlarges it becomes very ser- 

 pentine, and finally has quite long back-and-forth loops nearly 

 half across the width of the leaf. The cocoon is similar to 

 that of callosa. Moths issued from cocoons twenty days after 

 cocoons were formed. 



Opostega filiforma n. sp. 



Head creamy white between antennae, purplish grey on occiput. Eye- 

 caps white, remainder of antennae missing. Thorax purplish grey. Fore- 

 wings purplish grey, dorsum fuscous brown except near base, at one-fourth 

 of dorsum a fuscous brown streak extends obliquely to end of cell, at 

 two-thirds of costa a fuscous brown patch with an outwardly oblique 

 extension, costa white before and beyond this patch, a fuscous apical spot 

 preceded by fuscous streak at base of cilia; cilia greyish with a fuscous 

 line about middle, some at apex shorter and fuscous tipped, a few in 

 front of this longer and light fuscous. Expanse 9 mm. Hindwings and 

 cilia purplish grey. Abdomen purplish grey above, creamy below. Legs 

 greyish, front legs outwardly fuscous. 



Hab. — One specimen Alt. Kaala, Oahu. September 26th, 



1920 (Su'ccey ) : caught on Pelca clussiacfoUa tree, whose leaves 

 were very much mined by the mine shown in Fig. D. As no 

 other kinds of mines were present, I feel certain that this is 

 the mine of this species of Opostega. This same mine is found 

 abundantly in Pclea clliptica, where it occurs on Alt. Kona- 

 huanui and the other ridges near Honolulu. I have also found 

 them in undetermined species of Pelca at Wahiawa. It is a 

 very slender thread-like mine, wandering without any special 

 order throughout the leaf, at the last going down into the 

 petiole and mining in the cambium layer. 



Opostega peleana "• sp. 



Head white, a creamy tinge on crown. Eye-caps white, the remainder 

 of antennae creamy white. Thorax pale ochreous brown. Forewings pale 



