533 



A proliferation of tissue is produced and the upper epidermis 

 thickened up, and the larva feeds beneath it till fully grown, 

 when it escapes for pupation. The cocoon is probably made 

 amongst moss or debris on the ground, and is lenticular in 

 shape, of a pale reddish brown silk. I have never found them 

 in the open. The description is from those made in the moss 

 at bottom of breeding" jar in insectary. 



Besides rotnndifoVia, I have found the mines of this species 

 in the leaves of lydi^atci and several undetermined species of 

 Pelea. They have been found occurring on all of the ridges 

 of the Koolau Range, Oahu, that I have visited, from Kuliouou 

 to Ilauula. 



Opostega msculata Walsm. 



W'alsingham. b^auna I lawaiiensis, I, Part \', ]). 711, PI. 

 XXV, fig. 12 (1907). 



I have reared two specimens of this species from Pclea 

 ohlongifolia, Palolo, Oahu, Sei)tember 18th, 1915. I have found 

 the mines also in rotitndifolia and several other undetermined 

 species of Pclca, at Waialae Nui, Manoa, Alt. Olympus, Alt. 

 Tantalus, Pacific Heights, Wahiawa, and Punaluu, Oahu. 



The mine of this species (Fig. !> ) is a close spiral produced 

 outwardly from the center where the eg'g was laid on the upper 

 surface of the leaf. The spiral may turn to the right or to 

 the left. Just before issuing, the larva tunnels a short distance 

 from the spiral. X^o proliferation of plant tissue takes place 

 in connection with this mine as docs with the mine of callosa, 

 in fact that is the only species ha\ing a proliferation of ])lant 

 tissue in connection with its mine. 



Opostega serpentina n. s^p. 



TTi-ail Aviiite. Eye-caps white, remainder of antennae ]ial(» brown. 

 Thorax creamy white. Forewings creamy wliite, a faint hrown snfTusion 

 on bapal third; from one-third of (]()rsum a hrownisli streak extends 

 obliquely to near a l)rownisii jiatcii jnst l)eyon(l middle of costa ; some 

 faint brownish sufl'nsion in ajjical thii-d ; a small fnscous spot at ajiex 

 within a brownish line at base of cilia; cilia whitish with a faint brownish 

 line near tips, at apex some are sliorter and fuscous tipjted while just at 

 each side of these are some longer and fuscous tipped. Expanse fi.5 mm. 

 Hindwings and cilia greyish. Abdomen grey above, tawny hnlT bidow. 

 Legs tawny buff, front legs outwardly fuscous. 



