31G 



regions are also the ones upon which the native " lowland 

 vegetation has persisted it is natural that the native insects 

 should survive here, if at all. 



On the Island of Oaliu, these arid regions are found at 

 the extreme southeastern end in the vicinity of Makapuu 

 point, and again on the western side of the island from 

 Kaena point along the Waianae coast to Barber's point, and 

 thence eastwaixl to near the Pearl River Inlet, hi general 

 these regions are difficult of access, without good roads and 

 without \vater, so as to make camping difficult, and the sur- 

 face is irregular and diffi.cult of passage for pedestrians, owing 

 to the growth of the glue (Acacia farnesimm) and algaroba 

 { Prosopis i^iiJifJora) vhicli cover their surface. The native 

 vegetation is scattered and as a i-ulc there is l)ut little to I'epay 

 the insect collector for his trouble in working there. Such 

 conditions have led to a very general neglect by entomologists 

 of these regions iuid they have been but little investigated 

 excepting the Waianae coast and the vicinity of Koko Head. 



In lOlG, Mr. (\ X. Forbes, the botanist of the IJishop 

 JNTuseum, called my attention to the region to the south of 

 Ewa Mill and Sisal as a region where some of the endemic 

 lowland plants have survived, and in November of that year 

 the writer acom])anied him on a collecting trip there. 



He was rewarded by finding there an undescribed Jassid of 

 the genus Nesoplirosyne attached to a form of Euphoi'hia 

 multiformis growing there, and rediscovered the endemic 

 PhdeUa albovenosa Walsingham, discovering the feeding habits 

 of its larva. It is attached to the endemic caper, Capparh 

 sanchvicliiana, the young larva mining under the cuticle of the 

 green fruits, while the older larva burrows in its fleshy walls, 

 emerging to spin a characteristic J^hifella cocoon. 



In 1918 ::\rr. O. II. Swezey and Mr. P. H. Timberlake 

 visited the same region, finding there the Conoiopterygid, 

 Coniocampsa vesiculigera, which has rarely been taken. The 

 ^vriter again visited the region on Tune 8 and 10. 1919, finding 

 a new Plagithmysine Cerambycid, described on a later page 



