317 



as Kcofh/f'irliis ciiphoi-hhic and I'rofcrli nni.s dcrcpivr Per- 

 kins which had previously been taken by Mr. Tiniberlake on 

 Diamond Head. Both belong to particularly characteristic en- 

 demic Hawaiian groups of beetles and are the first species of 

 these groups to be discovered on the lowlands. Material was 

 lii-oiiiihr iiL from which a second (MKh-niic species of PJideUa 

 attached to Capparis sandwich i a lut described elsewhere in 

 tliese Proceedings as F. capparidis by Mv. Swezey, and a new 

 Bethylid representing a new genus, described in anothei- paper 

 as Nesepyris ewa. 



Oil June 30, 1010, Mr. O. H. Swezey, :\rr. E. TT. Bryan, 

 Jr., and tiie writer visited the same general region, going by 

 train to Gilbert and walking by one road to the lighthouse 

 at llai'ber''s Point, i-cturning l)y anurhcr route to (lili)ert, find- 

 ing some endemic Delphacids, a Jassid attached to Myoporwm 

 and an Olkirus which had previously been taken by Mr. 

 Swezey at Ewa Mill and the only lowland species of the 

 genus known fi-oui these islands. Here also was taken a 

 second species of Froterliinus (I\ c.rcnicians Perkins). 



I'he writer visited the region near Sisal again on -luly 

 <■). lino, and many times subse([U(Mitly during lOlO. 



Phese are apparently the only entomological investigations- 

 which have been made in this region, which for the want of 

 any comprehensive name the writer has called the Ewa (/'oral 

 Plain. The results of these visits have been so interesting 

 and since the region promises to furnish further members of 

 the old lowland fauna, it is worth while to discuss the condi- 

 tions there som.ewhat fully. 



The Ewa Coral Plain is made \\\) of an old coral reef 

 which extends from the Pearl Harbor Lochs and the inlet 

 connecting them with the sea to Barber's Point for a dis- 

 tance of about eight miles, extending inward from the sea 

 for a mile and a half to two miles. Nearly parallel to the 

 southern shore and about a mile from it. extends an old 

 solid barrier reef in wliich are the characteristic ])its such 



