June, I9I7-] PROCEEDINGS OF THE SoCIETY, 139 



extensive swamps, from those of the vicinity of New York City. He read 

 a paper in which comparison was made with Dr. Wm. L. Bray's " Develop- 

 ment oif the Vegetation of New York State," in which he emphasized the 

 necessity of considering several factors other than temperature in grouping 

 the beetle species of the state, among which are certainly the local environ- 

 ment and post-glacial dispersion. 



Mr. Davis exhibited a large number of insects of other orders caught on 

 the same trip, and read the following memo. 



"On June 22, 19 16, the dragon flies of interest taken at Portage were 

 Tachopteryx tlioreyi, found on an open, sunny road instead of on a tree 

 trunk as usual ; Libellula quadrimacitlata, Tetragoneuria spinegera, Zanthus 

 parvulus and Aeshna umbrosa. This last mentioned species has a long 

 period of appearance, as it has been found on Staten Island as late in the 

 fall as October 21. 



" On June 23, on the westerly side of Conesus Lake near Long Point, the 

 dragon fly Tetragoneuria cynosura with the variety siniulans was in great 

 abundance and many were resting on dead bushes and the dead branches 

 of trees that were near the ground. Mr. Harry H. Knight collected 31 indi- 

 viduals by sweeping his net about one of the bushes on which the insects had 

 settled. While we were looking at the dragon flies we heard the songs of 

 numerous seventeen-year cicadas and so went up the hill to the woods. The 

 cicadas were sufficiently numerous to keep up a continuous singing, but later 

 they were silent when the day became cloudy. The species was expected to 

 appear in Central New York in 19 16. 



"In June, 191S, the butterfly Pliyciodes batesii was collected at Rock City, 

 in Catteraugus County, N. Y., in considerable numbers and a single female at 

 Portage, N. Y., on the 13th of the month. On June 22, 1916, a male was 

 taken at Portage. It has also been taken at Ithaca, N. Y., so the species' is 

 certainly not uncommon in central and western New York." 



Mr. Davis exhibited a number of photographs of the localities that had 

 been referred to, including Indian Falls, where he found the " woods of the 

 midday night " as he expressed it. 



Mr. Comstock exhibited Lyccena sonorensis, pinned specimens, pupa and 

 living adult freshly emerged, saying that eastern collectors seldom could see 

 this most beautiful California "species of the genus alive. 



Professor Wright described the capture of about 140 specimens by Mr. 

 Geo. Field and himself near Pt. Loma, Cal. The butterflies to escape the 

 strong sea breeze fly only 5 or 6 inches from ground among the shrubbery 

 on the lee side of the ridge. The food plant is a species of Cotoledon or 

 pencil plant of which the closely appressed leaves look like a green pencil 

 growing out of the ground. The larvae bore into the pencil and the pupa is 

 found in surrounding rubbish. March is the best month to find them. 



Mr. Leng spoke of the similar flight of Lyccena in Labrador, following 

 closely the contour of the rocky surface. 



