Vol. xxix] ENTOMOLOGICAL NEWS. 37 



vi-6, and Dormer Lake, vii-6 (Dodge), California; jnrcnalis (not 

 propertius), Jemez Mountains, New Mexico, iv to vi, 25 (Woodgate, 

 and Louisiana, Missouri, v, 21 (Dodge); propertius, Salem, Oregon, 

 vi, 26 (Dodge); clitus, Garcia, Arizona, v (Biedermann ) ; tcrenthis, 

 Tampa, Florida, i, 30 (Williams): funcralis, Jemez Mountains, New 

 Mexico, viii, 30 to ix, 15 (Woodgate), and Woodward, Oklahoma, 

 vii, 20 (Dodge). He also called attention to Thanaos pacuvius God- 

 man-Salvin (Biol. Cent. Am. Rhop. T. 91 fig. 17) (not Lintner), 

 which is scudderi Skinner. 



Mr. Laurent explained an easy and satisfactory method of clean- 

 ing greasy Lepidoptera. White blotting paper is placed on each side 

 of the groove of a setting board: the specimen to be cleansed is then 

 placed in position with the under side of the wings resting on the 

 paper. Blotting paper is now placed over the upper surface of the 

 wings, and white twine is wrapped around board, paper and specimen 

 to keep every thing in place. Gasoline is gently poured over the 

 blotting paper, being careful that none gets on the body of the speci- 

 men. This specimen is then placed in a box until the gasoline has 

 evaporated, which takes but a few hours. At the end of this time if 

 the grease has not all been absorbed by the blotting paper, the opera- 

 tion should be repeated, using fresh paper. After the second operation, 

 if not the first, we will find our specimen as bright and clean as the 

 day it was captured. 



General.- Mr. Rehn spoke on the United States Government's publi- 

 cations on Life Zones, and especially referred to the recently pub- 

 lished valuable Report on Life Zones of Wyoming. He remarked 

 en the close affinity between insect forms on the costal strip of Cali- 

 fornia and those of the Sierra Nevada range in that State. Dr. Skin- 

 rier gave a talk, illustrated by lantern slides, on economic entomology, 

 particularly illustrating the local crusade against mosquitoes. R. C. 

 WILLIAMS, JR., Secretary. 



Entomological Section, The Academy of Natural Sciences of 



Philadelphia. 



Meeting of September 27, 1917, Vice Director R. C. Wilbams, Jr., 

 presiding, nine persons present. 



Odonata. Dr. Calvert spoke of the value of larval exuviae in the 

 study of geographical distribution as they furnish positive data that 

 the species breed where the exuviae are found and are often obtain- 

 able when the images are not visible. He illustrated these remarks 

 by exhibiting a small collection which he had made at a pond near the 

 ice-house, at an elevation of 3200 feet, on Mt. Greylock, Massachusetts, 

 July 27, 1917, between 2 and 4 p. m. The ima^os secured were of 7 

 species (Enallagma cbriuin, \\-halennia ircnc, Isclnnini rcrticalis, 



