Dec, 1908.1 Proceedings of the Society. 47 



In consideration of the great variety of galls and the comparative sameness of larval 

 anatomy, it is difficult to understand what are the factors which produce variation of 

 structure, size and color of galls that occur on the same parts of the different plants or 

 different parts of the same plant. 



Mr. Harris exhibited a collection of about 200 specimens of Cicindela formosa- 

 gonerosa and made some remarks regarding the possible derivation of the species and 

 its dispersal in the United States and northward. 'Y\\& formosa form, which is appa- 

 rently a development from the oXAtx generosa, occupies the ground roughly described 

 as lying between the Missouri River and the Rocky Mountains, or westward, speci- 

 mens in the collection appearing from Idaho, and as far south as Texas. Gene7-osa 

 is reported from most of the states north of about 35° latitude. In this section it is 

 abundant in the pine-belt of New Jersey, more sparingly at the western end of Long 

 Island. It is also found in abundance on the Connecticut River flats near Windsor, 

 on high sand hills in Litchfield Co. in the same state, and on similar ground in 

 Saratoga Co., N. Y., on the divide between the Hudson River basin and Lake 

 George, and in the valley of the Bouquet River west of Lake Champlain. Every- 

 where there is practically no variation in the markings, but a great difference in size 

 and color. In the Dominion of Canada a most interesting development has taken 

 place, described by Mr. Leng as var. inanitoba. The white markings are much 

 broadened, in extreme cases being nearly confluent. In sharp contrast to this form, 

 specimens from New Jersey were shown in which the middle band is interrupted, and 

 the other markings much abbreviated. Beautiful specimens of intergrades between 

 generosa and /or/nosa were shown from Kansas and Iowa, illustrating the close rela- 

 tion between the two forms of the species. 



Mr. William T. Davis exhibited a living specimen of A/eziitm, which showed 

 rows of stiff bristles on the elytra. These bristles fall off when the insect is dead and 

 roughly handled, and lead to the insect being sometimes described as having smooth 

 elytra. Mezium and Gibbium both occur in the tower of the New York Produce Ex- 

 change. Mezinm has been found in April and November, and Gibbium, which is 

 more common, in March, April, June, July and September. 



Mr. Davis also exhibited a living larva of the 17-year cicada of the 1911 brood 

 on Staten Island. 



Mr. Engelhardt exhibited two boxes of Coleoptera collected in Guatemala on his 

 recent visit there. He spoke concerning the difficulties under which collecting was 

 carried on, and explained that such material as he gathered was collected rather 

 incidentally. 



Society adjourned. 



Meeting of December 15, 1908. 



Held at the American Museum of Natural History, President C. W. Leng in the 

 chair, with sixteen members present. 



Mr. Roberts, delegate to the Council of the New York Academy of Sciences, 

 reported that Professor J. B. Smith had brought up the matter of a proposed lecture 

 by Professor E. B. Poulton, of England, to be given under the auspices of the New 

 York and Brooklyn Entomological Societies, and received the endorsement of the 

 Council. 



The president appointed the following committee to nominate officers for the 

 coming year : Messis. E. B. Southwick, J. L. Zabriskie and E. G. Love. 



