NOVEMBER 1st, 1906. 



The twenty-second regular meeting was held at the usual 

 place, Dr. R. C. L. Perkins in the chair. 



Notes and Exhibitions. 



Mr. 0. H. SwEZEY exhibited a collection of eleven species of 

 Odynerus collected by him in lao Valley, Maui, July 29th, 1906, 

 consisting of 0. nigripennis (numerous), 0. insulicola (7), 0. 

 molokaiensis (4), 0. purpurijer (3), O.instahilis {3),0.konanus (3), 

 0. ecostatus (3), 0. sandwichensis (1), 0. camelinus (1), 0. homoeo- 

 gaster (1), and 0. naiadum (1). Both he and Dr. Perkins com- 

 mented on the good luck that attended him on that day, to have 

 collected eleven out of the sixteen species known to occur in that 

 valley. Dr. Perkins further stated while he collected O. molo- 

 kaiensis on Molokai in 1892, he found none of it on Maui in 1893 

 and 1894. In 1902 however this species was found very abun- 

 dant in lao Valley, from which he concludes that it must have 

 been introduced there by the agency of man. Some of the 

 species collected by Mr. Swezey were not collected by himself 

 in that valley and some of them, as O. instabilis, were very rare 

 there. He further remarked that, by a careful study of the 

 habitus, mode of flight etc., of the different species, when in the 

 field, the most closely allied forms could be discriminated, even 

 where they are not easily separated in the study. Thus, four 

 examples of Odynerus recently collected on the wing amongst 

 swarms of 0. pseudochromus , but suspected of being different, 

 were found to include one peculiar variety of that species, one 

 O. pseudochromoides, and the two much rarer species 0. paliidi- 

 cola and O. leiodemas. To be able to pick out the choice species 

 from the very common ones which they resemble, is a great help 

 to the collector in these Islands, where large genera of closely 

 allied species are frequent. 



Mr. J. Kotinsky exhibited books recently purchased by the 

 Board of Agriculture and Forestry, among them a copy of Ruuss- 

 cher's "Histoire Naturelle de la Cochenille, Justifiee par les 

 Documens Authentiques," published in Amsterdam, 1729, the 

 even pages being in Dutch and the odd in French. The titles 

 quoted above indicate the method of investigation pursued by 

 the author. 



