OF WASHINGTON, VOLUME XV, 1913. 15 



balsam, labeled ''Burnharn Beeches, Eng. 2.6.08, 23.7.08 (male); 

 C. Waterhouse. Polynema psecas Girault Three females (from 

 Illinois, U. S. A., Urbana, April 22, 1909, J. D. Hood; Mattoon, 

 July 16, 1910; from United States National Museum collection, 

 no labels); one male, Mattoon, Illinois, U. S. A., July 16, 1910. 

 Polynema reduvioli Perkins two males, one female remounted 

 from cards in xylol balsam, received from Mr. 0. H. Swezey and 

 labeled "Honolulu, Oahu, 7.22.07/' males, and "Pahala, Hawaii, 

 12.2.05," the female. Also a female captured in North Queensland 

 as above noted. 



2. Polynema rubriventre Perkins. 



Mr. Swezey sent me two females of this species collected 

 December 5, 1907 (12-5-07) at Kaumuchona, Oahu, Sandwich 

 Islands, by himself. The specimens were mounted on cards. In 

 order to remount them, these latter were removed from the pin 

 and placed into a vial containing ordinary water. After a short 

 while they had become dissolved from the cards and by gently 

 shaking the vial were made to float freely upon the water. With 

 a camel's-hair brush they were removed and placed upon a slide, 

 upon which, after draining them, they were run through absolute 

 alcohol and chloroform in succession, draining after each operation. 

 Then being floated in chloroform, they were without difficulty 

 removed to a central drop of xylol-balsam, merely by transferring 

 them on the end of an insect pin dipped into the balsam; the 

 balsam was then covered with a cover-glass. Gentle heat was 

 then applied, placing the cover in its place and removing air and 

 the mount was complete. This operation has been described 

 because of the ease and rapidity with which it is performed and 

 also because the mounts are sufficient for the purposes for which 

 intended and no injury is done to the specimens. 



Perkins described this species from Oahu from an elevation of 

 1,500 feet and upward. It is not known to occur elsewhere than 

 Oahu. Its original description agrees with the specimens before 

 me. The characteristic black of the head and thorax and the 

 ferruginous of the abdomen contrast; the legs are intense orange 

 yellow; the valves of the ovipositor are exserted for a distance equal 

 to the length of the distal funicle joint or about somewhat less 

 than a fifth of the length of the abdomen and they are concolorous 

 with the abdomen. The species is a large one, robust, with broad 

 fore wings whose discal ciliation is dense and moderately long, 

 not fine. The longest marginal cilia are only about a fourth the 

 wings' greatest width; the fore wings are somewhat larger than 

 those in the Sibylla Girault and has distinctly shorter marginal 

 cilia; the fore wings also are distinctly fumated along the distal 

 half of that portion of the blade which is distad of the venation 



