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many styles of these cases are to be found on rocks, bark of trees, 

 boiieatli the bark of dead trees, and in dead and decaying stems 

 and trunks of trees. Some feed on lichens, others on bark and 

 wood, so far as known. There may be other habits by many of 

 them. I give the habits of the few that are known. 



H. discella Walsm. — ''Larvffi in an irregular case of silk and 

 grass encrusted with miscellaneous fragments (some of them 

 apparently insect remains). On Cheirodendron, Metrosidcros, 

 etc., probably lichenivorous" (Perkins). IJ. notabilis Walsm. — 

 Larva in a nearly smooth, subcylindrical case bulged in the mid- 

 dle. Among fibrous matter at base of palm leaves. //. partita 

 Walsm. — I bred a specimen from a pupa in a dead twig. There 

 was no case. //. ahjecia (Butl.) — Larvir in a regular elongate 

 oblong-oval, brown case covered with frass and bits of rotten 

 wood, in dead ieie vine and other sticks. H. hlackburnii Butl. — 

 "On more or less decayed koa trunks" (Perkins). "I think it is 

 connected with dead wood" (Blackburn). //. alii I c rata Walsm. 

 — Larvae in a broad flat, rounded-oval case coming to a point in 

 front. The case really is not so broad, but has a broad ex- 

 tension on sides and rear made of a single layer of round 

 bits of epidermis from the bark, forming a mosaic of the color- 

 ation of the bark of the tree on which it lives, and tlius not 

 seen by the casual observer. I have found tliem on the 

 trunks of living koa, kukui, Boclimeria and ceara rubber trees. 

 H. trimaculata Walsm.— Larva> in a short sulx-ylindrical case, 

 constricted near each end, covered with minute bits of lichen; 

 on and bouoath b:irk of koa trees. //. hacilldla Walsm. — "Larv^ 

 on Melrosidcros pol jjinorplia and other trees" (Perkins). H. 

 ranella Walsm. — "Larvte on rocks" (Perkins). //. saccophora 

 Walsm. — ''Larva in case on rocks, no doubt lichenivorous" (Per- 

 kins). //. virina Walsm. — 'T)n more or less decayed koa trees" 

 (Perkins). //. )iir/n)siderella Walsm. — '^Larvse on Metrosidcros" 

 (Perkins). //. }no)ilivolans (Butl.) — "Larva in case on rocks" 

 (Perkins). //. lilurala Walsm. — Larva in lichen-covered case 

 on rocks, lichenivorous. //. parda (P>utl.) — "Ap]iarently con- 

 nected with dead wood" (Blackburn). //. snhcitrella Walsm. — 

 "Larva in case on Cheirodendron, Metrosideros, etc." (licheniv- 

 orous?) (Perkins). H. chilonella Walsm. — Larva elongate, 

 white, boring in dead Pipturus stems ; without a case. " H. 

 el-nlia Sw. — Larva feeds on under surface of fronds of birds-nest 

 fern, in a silken frass-covered tunnel, also bores the rachi^. 



