1920] Proceedings of the Cambridge Enfomnlogicnl Club 87 



PROCEEDINGS OF THE CAMBRIDGE ENTOMOLOGICAL 



CLUB. 



At the meeting April 13, 19*20 a j^aper was read by S. M Dohan- 

 ian on the mosquito control of which he had charge at the army 

 flying station near San Antonio, Texas. By filling holes and 

 frequent oiling of all open water around the camp., it w^as kept 

 almost free from mosquitoes. Discussion followed on the effect of 

 petroleum on plants and several cases were mentioned where water 

 plants grew through a thick film of oil without apparent injury. 



R. Heber Howe, Jr., spoke of the Odonata in New England and 

 showed maps on which the distribution of each species is plotted 

 and his lately completed Manual of New England Odonata which 

 contains illustrations of the distinctive characters of the species 

 and pictorial tables explaining their classification. 



Mr. Varas, a student in Boston, gave an account of the physi- 

 ography and faunal conditions of Chile, his native country. 



Two meetings were held in May on the 11th and ^oth. W. M. 

 Wheeler gave an account of the feeding habits of ants, especially of 

 the larvse of Pseudomyrminse which have on the ventral side within 

 easy reach of the mouth a pouch in which the worker ants deposit 

 the waste pellets from their mouth. The mouths of the larvae are 

 provided with a triturating apparatus for chewing this food and 

 appear to get their whole nourishment from it. A full account of 

 this will be published in the Transactions of the American Philo- 

 sophical Society. 



D. J. Caffrey of the U. S. Bureau of Entomology gave an account 

 of recent studies of the European corn-borer in America for which 

 see recent bulletins of the II. S. Dept. of Agriculture and N. Y. 

 State Dept. of Farms and Markets. 



At the meeting of May 25 three recent publications by members 

 of the Club were shown. Revision of the Nearctic Termites by 

 Nathan Banks and T. E. Snyder in U. S. Nat. Museum Bulletin 

 108. Manual of the Orthoptera of New England by A. P. Morse 

 in Proc. Boston Soc. Nat. History. Catalogue of the Spiders of 

 Canada known to the year 1919 by J. H. Emerton in Trans. Cana- 

 dian Institute, Toronto 1920. 



C. A. Frost read a paper on the habits, distribution and sys- 

 tematic relations of several species of New England and Canadian 



