317 



as Xeoclytarlus eupliovhlac and ProferTtiniis deceptor Per- 

 kins which had previonsly been taken by Mr. Tiniberlakc 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 

 brought in from which a second endemic species of PhdcUa 

 attached to Capparis sandivichiana described elsewhere in 

 these Proceedings as F. capparidls by ]\Ir. Swezey, and a new 

 Bethylid representing a new genus, described in another paper 

 as Nesepyris ewa. 



On June 30, 1919, Mr. O. II. Swezey, ^Ir. E. II. Bryan, 

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

 train to Gilbert and walking by one road to the lighthouse 

 at Barber's Point, returning by another route to Gilbert, find- 

 ing some endemic Delphacids, a Jassid attached to JSLyoporum 

 and an Oliarus which had previously been taken by Mr. 

 Swezey at Ewa Mill and the only lowland species of the 

 genus known from these islands. Here also was taken a 

 second species of Proterhinus {P. excnicians Perkins). 



Tlie Avriter visited the region near Sisal again on July 

 0, 1919, and many times subsequently during 1919. 



These are apparently the only entomological investigations 

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

 any comprehensive name the writer has called the Ewa Coral 

 Plain. The results of these visits have beei^ so interesting 

 and since the region promises to furnish further members of 

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

 tions there somewhat fully. 



The Ewa Coral Plain is made up of an old coral reef 

 which extends from the Pearl Harbor Lochs and the inlet 

 <>onnecting 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. ISTearly parallel to the 

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

 solid barrier reef in which are the characteristic pits such 



