360 



from a caterpillar on Stmussia from Mt. Tantalus. Oahn. Tan- 

 nary loth, 1916. 



Eristalis aeneus. — Mr, Bryan gave notes on the l)ibliog- 

 rapliv of this ily, and a general disensfeion of its extreme 

 abnndanee followed. This muck-breeding fly is now cons}»ieu- 

 ons by its entrance into houses, particularly in the lower .Ma- 

 Tioa, Punahou and Kalihi districts of Honolulu, and is also 

 found abundant on the Ewa Coral Plain. J^one of the mem- 

 bers had found its breeding places and none could suggest 

 any type of breeding place which would account for its general 

 abundance. Mr. Timberlake suggested that on account of its 

 strong powers of flight it might be distributing itself from 

 some centralized breeding places. Mr. Bridwell suggested that 

 from the known breeding places of its allies, YohKU'Ihi ohcm. 

 and Engtalis piinctulatus, it is probably breeding in the ])ine- 

 apple refuse at the canneries in Iwilei and in the sisal refuse 

 at the sisal mill. 



Xylehorus spp.- — Mr. Bridwell exhibited series of both sexes 

 of three species of Scolytidae belonging to or related to Xyle- 

 horus. These are all ambrosia beetles, the 1)ur rowing being 

 done ])y the adult beetles while the larvae feed cpon a fungous 

 growth in the tunnels. One of the species exhibited was from 

 the wiliwili tree (Erytliriiut monos'perma) on the Kwa Coral 

 Plain; another was taken from the branches of Dracaciid an- 

 rea in Xuuanu ; and the third was working in ohia ha (iSyzy- 

 gium sandiincoisc). Other species are known to attack Acacia 

 l-oa. Jloltca. t'^finussia. Perrottctia, and other native trees, and 

 it is ])r(tbable that when the group is thoroly collected that 

 uuiuv s]^ecies will be added to the few which have been de- 

 scrilted. 



(hlijnvrus [jsendocliroinas. — Mr. Bridwell exhibited s]ieci- 

 mens of what he considered an undescribed variety of this 

 species of wasp, recently bred by him from JSTuuanu Valley. 

 The female has round red spots on the second tergite and 



