224 



ment made by him at the October meeting to the effect that 

 this Jassid egg-parasite had been introdnced to Hawaii by 

 ]VIr, Koebele. He had recently received a letter from Dr. 

 Perkins, in which it was stated that Mr. Koebele did not try 

 the introduction of any leaf hopper egg-parasites from Mexico 

 at the time mentioned, and that this species of Gonatocerus 

 must have come of itself, probably along with its host. 



Tyroglyplius longior infesting flour. — Prof. Illingworth 

 reported having recently received a package of flour that had 

 been standing for some time, and was swarming with these 

 mites. After keeping the flour for a few days in the labora- 

 tory the pest became noticeably less, and it was found that 

 one of the large predaceons species was rapidly devouring them. 

 Tnis pest has a great variety of food substances, such as dried 

 meats, cheese, cereals, drugs, dried fruits, bulbs, etc. They 

 are said to attack raw sugar, among other things, but Mr. 

 lilingworth had not observed them in this food in the Islands. 



The cadelle (Tcnehroides mauritanicus) destroying paper. 

 — Prof. Illingwortli reported having recently had his atten- 

 tion called to the work of the larvae of this beetle on botanical 

 drying blotters, by Mr. J. F. Rock. 



The blotters had been piled up for some time and the 

 larvae had w^orked their way in around the edges, in some 

 cases three or four inches. Apparently their main object in 

 entering the paper was to find a suitable place to pupate. In 

 constructing the pupating cell the larvae chewed up the paper, 

 forming cocoon-like nests, which fastened the sheets together. 

 In many cases the borings had extended right through the 

 sheets. 



This is a widely distributed grain beetle, though the larvae 

 are often predaceons. Their habit of boring into the wooden 

 walls of the grain bins, to pupate, suggests a reason for them 

 selecting the stack of paper for this purpose, 



]^o grain of any kind was in the room where the beetles 

 wore found, though they possibly were feeding on some of 

 the nuts or seeds of the botanical collection. He had p7'e- 

 vi')usly reared this species from Brazil nuts. 



