1921] Proceedings of the Cambridge Entomological Club 29 



PEOCEEDINGS OF THE CAMBRIDGE ENTOMOLOGICAL 



CLUB. 



At the meeting November 9th, Mr. L. R. Eejmolds spoke of his 

 insect collecting aronnd the City of Mexico, where he spent the 

 last winter. Many of the insects were similar to those of Arizona 

 and southern California, but with them were others of more trop- 

 ical kinds, as the Heliconid butterflies, which came in large num- 

 bers to the garden flowers. Many flying insects were caught in the 

 evening by holding a fine net from a moving street-car. A large 

 beetle larva from cactus is sold in the markets for food. Mr. Rey- 

 nolds met several local entomologists and visited the collection at 

 the National Museum. 



Mr. C. W. Johnson told of a visit last summer to Mt. Desert 

 on the coast of Maine, where he took part in the preparation of a 

 catalogue of the animals of the island. Thus far about 1,400 spe- 

 cies of insects have been found at Mt. Desert. 



At the meeting of December 14th, Prof. C. T. Brues read a paper 

 on microorganisms living within the bodies of Coccidae, on which 

 he and Dr. Glaser have lately made some new observations. Some 

 can be cultivated in suitable media outside the body of the insect. 

 Experiments suggest that the growth of these plants modifies the 

 fluids around them in such a way as to promote the digestion of 

 plant juices eaten by the insect and to aid in the rapid changes 



Mr. J. H. Emerton spoke of the unusually small amount of 

 which take place during the growth of the eggs, 

 flying of spiders during the autumn just passed, although there was 

 much pleasant weather. 



Mr. L. R. Reynolds demonstrated a method wliich he uses for 

 mounting small Coleoptera between two pieces of thin glass. 



