1868.] 189 ^ [Allen. 



years. We should take into account, also, the little attention this 

 class of animals ordinarily receives, observers likely to detect it being 

 almost as few and as scattered as the localities at which the species is 

 thus far known to exist. Hence I see no reason for sujiposing it may 

 not occur with nearly the same generality as other species, its habits 

 only preventing it from being as commonly observed. 



3. Hyla versicolor LeConte. (Storer's Rep., p. 241.) Tree 

 Frog. " Tree Toad." Very common. For several days past (Sept. 

 18th), I have heard four or five individuals piping within hearing of 

 where I am writing. Their notes are commonly first heard in spring, 

 about May 1st. During the second and third weeks of May, I have 

 frequently heard them at evening from trees in the vicinity of ponds, 

 but have never been able to find them in the water, to which they 

 must repair to spawn. Tliey seem very sedentary in their habits, one 

 having lived several months the past summer in an apple-tree near my 

 window. From the same tree I have heard one in former years, fi'om 

 early in May till late in September, though it stands at quite a distance 

 from water. Whether it is the same individual that I have heard 

 so long, and where its place of hibernation is, I have as yet been una- 

 ble to ascertain. 



4. Hyla squirella Bosc. (Storer's Rep., p. 242. Hyla Rich- 

 ard'd Baird.) Green Tree Frog. Apparently not rare in the proper 

 localities. Its small size and green color, combined with its habits, 

 render it difficult to discover. I foiuul my first specimen on a fence 

 rail, the last week in August, 1862. Up to the present year I had found 

 but one other, also on a fence. I have now before me eight fine speci- 

 mens, five or six of which were taken in a single afternoon from grass. 

 There are also several specimens in the Springfield Museum, collected 

 by Mr. C. W. Bennett at Holyoke. They are undoubtedly the Hyla 

 squirella of Holbrook, the northern limit of distribution of which he 

 thought Avas the thirty-fourth parallel, and the species exclusively 

 southern. Dr. Storer, having but a single dried specimen from Rox- 

 bury, copied Holbrook's excellent description in full. Dr. DeKay 

 found specimens near New York, which Dr. LeConte pronounced 

 identical with the //. squirella of tlie south. Respecting its habits 

 Dr. Holbrook observes: " This animal is found on trees, often seeking 

 shelter under the bark of such as are decaying; it frequently chooses 

 old logs for its place of hibernation. In fine weather, and after 

 showers, it climbs even the highest trees in search of insects." I have 

 observed it on low bushes, coarse plants and grass, and on fence rails, 



