252 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loj 



melted paradichlorobenzene had been poured in the bottoms of the 

 pill boxes to afford protection against molds and museum pests, and 

 the insects were placed in thin layers between padded filter cotton. 

 The boxed specimens were stored in heated cabinets until the insects 

 could be sorted. The insects of medical importance were determined 

 in the laboratory or sent to specialists, and the residue of insects or 

 trash was packed and labeled and sent to the U. S. National Museum 

 in Washington, where many new and valuable insects were recovered 

 and added to the National Collection. 



For mounting on microscope slides, dry specimens were placed 

 overnight in a warm saturated solution of phenol in absolute alcohol. 

 By the next day the specimens were well cleared and were then 

 transferred to a solution containing equal parts of Canada balsam and 

 the liquefied phenol. After a few minutes they could be transferred 

 to slides for dissection. Dissection consisted in cutting off the wings 

 and mounting them in a separate drop of the mixture on one end of 

 the slide under a separate cover glass, cutting off the head and orienting 

 it anterior side up, and cutting off the abdomen and orienting it 

 ventral side up. It was necessary to cut off the male genitalia between 

 the eighth and ninth segments in order always to orient the specimen 

 ventral side up. A small piece of broken cover glass was added to 

 prevent undue flattening and the cover glass applied. After labeling, 

 the slides were placed in a warm drying oven for about two weeks, and 

 extra balsam was added from time to time to replace the mixture lost 

 by evaporation of the phenol. 



The types of the new species and most of the material studied are 

 deposited in the U. S. National Museum. Paratypes and determined 

 series of as many of the Panama species as available will be deposited 

 in the following collections: British Museum (Natural History), 

 London, England; Gorgas Memorial Laboratory, Anc6n, Canal Zone; 

 Instituto Nacional de Higiene, Caracas, Venezuela; Instituto Oswaldo 

 Cruz, Rio de Janeiro, Brazil; Musee Royal d'Histoire Naturelle, 

 Brussels, Belgium; Universidade de Sao Paulo, Sao Paulo, Brazil; 

 and the University of Puerto Rico, San Juan, Puerto Rico. 



In the distribution records, the first country given is that of the 

 type locality and the remaining countries are listed alphabetically. 

 The Panama localities are listed alphabetically by province; these 

 localities are given according to the Esso Standard Oil highway map 

 of Panama and the American Geographical Society's "Map of Hispanic 

 America, 1:1,000,000." Some new distribution records for certain 

 countries are given, based on specimens in the U. S. National Museum 

 collection; for these the names of the towns or other data are added 

 in parentheses. Unless otherwise indicated, all Panama records are 

 based on specimens collected by the junior author in light traps. The 



