218 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. 9 



being taken to erect a fourteen-car fumigation house at Nogales, Arizona. 

 7,772 cars were fumigated as a condition of entry from October 1, 1919, to 

 June 30, 1920. In addition to the fumigation houses, sterilization plants 

 have been erected by private concerns at three of the principal ports of entry 

 for the purpose of sterilizing, by the use of heat, com arriving from Mexico. 

 The arrival of com fouled with cotton seed made it necessary to adopt this 

 safeguard before permitting the entry of Mexican corn. 



Reference was made to the inspection work conducted at the foot-bridges 

 of the various ports, and it was indicated that living larvae of the Pink Boll- 

 worm had been intercepted on several occasions in cotton seed found in suit- 

 cases and in pillows. Other injurious insects not known to occur in the United 

 vStates have been repeatedly intercepted. During the first six months of this 

 inspection work there were no less than 1018 interceptions of contraband 

 material. Various phases of the work on the border were illustrated with 

 lantern slides. 



Notes and exhibition of specimens 



Mr. R. C. Shannon recorded the collection by himself on Moscow Mt., 

 Idaho, of specimens of the peculiar fly, Ambopogon hyperboreus Greene, 

 originally described and hitherto known only from Alaska near the Arctic 

 Circle. 



Dr. J. M. Aldrich discussed the use of caterpillars for food by the Pahute 

 Indians of Mono Lake, California. The species used is found to be Color adia 

 pandoria. The eggs are deposited on the bark of pine trees in the spring and 

 hatch in midsummer. The larvae feed on pine needles until cold weather 

 and hibernate in the clusters of needles as small larvae. They finish feeding 

 the following summer, pupate, and emerge the next spring. The life cycle, 

 therefore, requires two yeais. The larvae are collected in very large numbers 

 by means of trenches, placed on hot earth for about an hour, and dried in the 

 sun. They are used in the making of soup. Other insects used as human 

 food were cited by various members: the pupae of the dipterous genus 

 Ephydra, eggs of the hemipterous genus Corixa, etc. Other cases of two- 

 year life-cycles in Lepidoptera were cited by Mr. Busck and Mr. Heinrich, 

 the latter attributing it in many cases to climatic conditions. Mr. Rohwer 

 spoke of the suspended development in a portion of the brood in certain saw- 

 flies. He cited especially Neodiprion lecontei, which has two periods of emer- 

 gence of adults from the same batch of eggs, one period in the spring and one 

 in the fall from eggs the previous fall, and one in fall and one in spring from 

 eggs laid the previous spring. Mr. Caudell stated that certain katydids and 

 walking-sticks have two periods of hatching. Mr. Morrison cited the case 

 of the Coccid genus Margarodes in which life-cycles of 15-17 years are known. 



336th meeting 



The 336th meeting of the Society was held January 6, 1921, in Room 43 

 of the new building of the National Museum. President Walton was in 

 the chair and there were present 32 members and 3 visitors. The Editor, 

 Dr. A. C. Baker, reported that the contract for the printing of the Proceedings 

 for 1921 had been awarded to the McQueen Co., of Washington. As chairman 

 of the Auditing Committee, Mr. Caudell reported the accounts of the trea- 

 surer correct. 



The Corresponding Secretary-Treasurer, Mr. S. A. Rohwer, presented his 

 report for 1920, the tenth year of his tenure of office, including his report as 



