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once. It was from mines in Pipturus leaves in the Kohala Mts., 

 Hawaii. It is a larger species than the preceding, and makes 

 fewer mines per leaf. The larva emerges to pupate within an 

 oval coccoon made flat-wise on the surface of the leaf. 



Philodoria splendida Walsm. — The larvae of this species 

 mine the leaves of Metrosideros polymorpha. Thev are found 

 common on all the Islands. The larva emerges to form its oval 

 cocoon, which is made on the surface of the mine, the dead epi- 

 dermis being cut around a little distance from the cocoon so that 

 it readily falls away carrying the cocoon with it. The silk of 

 the cocoon is light brownish resembling the dead epidermis of 

 the mined leaf. 



Philodoria auromagnifica Walsm. — I have reared this beau- 

 tiful little moth from the leaves of Myrsine, in the mountains of 

 Oahu. The larvae emerge from the mines to pupate in oval co- 

 coons on the surface of the leaves. 



(Three other species of this genus have been described from 

 tliese Islands and are probably leaf -miners in some native trees ; 

 l)ut so far I have not reared them.) 



Gracilaria marginestrigata Walsm. — The larvae of this moth 

 mine the leaves of Sida on the lowlands. It is very abundant, 

 often a dozen mines in one leaf. Leaves of the cockle-bur (Xan- 

 tliium) and Ahutilon are also mined by them. The cocoon is 

 formed within the mine. 



(hacilaria duhautiella Sw. — The larvae mine the leaves of 

 Duhautia plantaginca. The mine is at first slender and more or 

 less straight, lengthwise in the leaf ; later, it becomes an irregular 

 blotch. The cocoon is made within the mine, its position being- 

 indicated by a little of its silk being visible through a slit that 

 was made in the epidermis for emergence. I have found this 

 very abundant generally in the mountains back of Honolulu. 



Gracilaria epihathra Walsm. — This mines the leaves of 

 Duhautia la.va. The mine is more of an irregular blotch than the 

 preceding. The larva usually pupates in cocoon within the mine 

 as in preceding species, but sometimes emerges to pupate in a 

 flat oval cocoon on the surface of the leaf. I have found it only 

 on Mt. Olympus, Oahu. 



Gracilaria mahaella Sw. — The larvae mine the leaves of 

 Maha sandiricensis and J/, liillebrandii. The mine is long and 

 slender, and often follows up near the margin of the leaf, grad- 

 ually widening, and then returns toward the base of the leaf as a 

 wide streak down tlie middle, which turns deep black Avith age. 

 The larva emerges to pupate in an oval cocoon on the surface of 



