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first discovered habitat, across the broad Xuuanii Valley, the 

 most important dividing valley of the range. 



Hitherto its food-plant has remained nndetermined. It had 

 been originally taken only in small numbers sweeping over the 

 staghorn fern ((rlcicJieiiia) and othei- vegetation along the old 

 native trail on the er(>st of Kanmiiohoiia ridge. ^Mr. Timber- 

 lake and I had each taken a single mah> on Piftosponim on the 

 Lanihuli ridge at about the same ek'vation as its original 

 habitat. 



On April 2.'>, while collecting with ]\Ir. Tindjerlake along 

 the Castle trail, in returning we separated and I proceeded 

 along the old ridge trail back to the Cooke trail descending 

 into N'nnanu Valley, hoping to secure further material of this 

 species of which even as yet only a few specimens had been 

 taken, and ])('rha])s to solve the problem of its food-plant. 

 After a few sti-okes of the sweep-net over ferns and other low 

 vegetation, four adults were seen in the net. For some time 

 this process was continued, kee])ing in mind the plants swept 

 over, and it soon Ix'came evident that aside from the common 

 ferns aud Mclrosidcros, the only possible food-plant among 

 those s\vej)t wouhl be Eupliorhia clusiaefolia. The first plant 

 examined disclosed one adult, aud repeated examinations others 

 both adults and nymphs. In one case a single leaf bore on its 

 under side about a dozen iudividuals, iuehuliug tAvo or three 

 nymphs. This leaf was placed in a glass tube and carried 

 home. Dui-iug the succeeding wec'k oue of the nymphs com- 

 pleted its Irausforuuitions and the greater ])art of the individ- 

 mds remaiue<l iu a living conditiou until the leaf withered. 

 ]n all about ."■)() iudividuals of the s])ecies were taken, being all 

 found iu tlie I'egiou where the host-])lant was ])resent. 



/'Jiipliorhld cliisidcfdiid thus appears to be the proper host- 

 plant for the species. This ])laut ;!])pears to l)e generally dis- 

 tributed along Ihe hileral ridges back of IIouolulu, though in 

 no other ])hice have I ha])])eued to find it so al)undant as on 

 this particidai- ridge. We uiay ])erliaps hope to (wteud our 

 knowledge of the distribution of the s])ecies by a careful exam- 

 ination of the plant iu other ])arts of its range. 



