AMPHIBIANS. 53 



it is almost impossible to distin^nish tlie froo- from its siiiTomid- 

 iiigs. When frightened it makes several long leaps in quick suc- 

 'tession. The food probably consist of insects, small Crustacea and 

 snails. The common name "pickerel frog" is due to the fact that 

 the species is frequently used as bait in pickerel fishing. It is of 

 no food value because of the disagreeable odor. 



The breeding season of Rana pahistris is April and May. The 

 croaking of the males is said to resemble the sound made by the 

 tearing of coarse cloth. The eggs are laid during May and the 

 early development is rapid. The metamorphosis usually takes place 

 in ,July or August, but under adverse conditions transformation 

 may be delaved until the next vear. 



Distrihutioa: Eastern North America, north to Hudson's Bav 

 and west to the Great Plains. (Dickerson, 190G.) 



Michigan : Specimens in the University Museum from Washte- 

 naw, Barry, Calhoun, Kalamazoo, Livingston and Cass Counties, 

 lieported from W^ayne County (Cope, 1889) ; Wayne, Kalamazoo, 

 Montcalm and Van Buren Counties (Gibbs, Xotestein and Clark, 

 1905) ; Ontonagon County (Kuthven, 1904a) ; Washtenaw County 

 (Smith, 1879) ; Cass County (Thompson, 1911). 



This species has been reported from Michigan by several writers, 

 but until this ^^ear there were, with the exception of one from Liv- 

 ingston Count}', no specimens in the University Museiun. The 

 writers have found it to be rather common in the vicinitv of Ann 

 Arbor, and have taken it in Kalamazoo and Calhoun Counties and 

 in large numbers in Cass County (Thompson, 1911), and have re- 

 ceived two specimens collected by Miss Jessie McNall in Barry 

 County, so that the species is without doubt quite common through- 

 out the southern part of the southern peninsula. The Ontonagon 

 record is erroneous and the other records need to be verified for the 

 species is easily confused Avith 7?. plpiens. 



KANA CLAMITANS Latreille. 



GREEN FROG. 



(PI. y.) 



Description: Body stout. Head thick, muzzle pointed. Eyes 

 large and close together. Skin of back rough. Back of femur 

 granulated. Lateral folds conspicuous. Toes broadly Avebbed, 

 leaving last two joints of fourth toe free. Tubercles on joints of 

 toes and inner sole tubercles distinct. Ear of male larger 

 than eye. A^omerine teeth in tAvo patches between or behind the 

 internal nares. 



