208 



past jear found their nests in rotten sugar canes at the Experi- 

 ment Station in Honolulu and at Aiea, Oahu. This was fol- 

 lowed by a general discussion of several of our species of ants. 

 Mr. Ehrhorn related an interesting experiment in which he 

 sprinkled pulverized Cyanide of Potassium on the surface of 

 the ground around the entrance of a nest of Solenopsis geminata, 

 and then by stamping on the ground, the ants were disturbed, 

 and many came forth and were very quickly overcome as they 

 crawled over the Cyanide. 



Mr. Giffard called attention to the spread of the introduced 

 fern weevil (Syagriiis fulvitarsis Pasc), on the mountain 

 ridges near Honolulu. It was first known on Pacific Heights 

 Ridge as early as 1903. By 1900, it was common on the Pauoa 

 side of Tantalus ; and has now spread to the Manoa side of Tan- 

 talus. It is attacking and killing off nearly all the ferns of the 

 species Sadleria cyatheoides, and is causing some concern lest 

 it later on attack some other species of tree ferns of the region, 

 none of which so far have been observed to be attacked by it. 

 During all this time, several of the florists in Honolulu were 

 having their maidenhair ferns attacked by this weevil. In the 

 latter fern, it is the underground rhizome that is attacked, 

 while in the Sadleria, the weevils attack the stem of the frond, 

 the larvae burrowing all through it. 



Moths from Olinda, Maui. 



BY OTTO n. SWEZEY. 



The following is a list of moths collected by Mr. J. F. Rock 

 as they came to lights at night, at Olinda, Maui. Among them 

 are a few that I have never collected, and are somewhat rare, one 

 of them being Hymenia exodias, which was only collected once 

 before and that by Dr. Perkins on Molokai. 



FAMILY CAKADKINIDAE. 



2 — Cirj)his unipuncta (Haw.) 

 3 — Lycophotia saucia (Hub.) 

 1 — Agrotis cinciipennis (Butl.) 



FAMILY PLUSIADAE. 



2 — Nesamiptis ohsolcta (Butl.) 

 6 — Cosmopliila noctivolans (Butl.) 

 27 — Cosmopliila sahidifera (Guen.) 



