AMFJbllBiAJNS. 51 



the shallow water of ponds in large masses which may float freely in 

 the water but are usually attached to sticks or plants. Hankinson 

 (1908) found unsegmented eggs, which had evidently been recently 

 deposited, in Oakland County, April 8, 1907. The time of hatching 

 varies according to temperature, but under ordinary conditions the 

 tadpole will appear in about ten days. The metamorphosis is com- 

 ])leted in July or August and it is for this reason that this species 

 is more apt to be raised than RaiUi cateshcana by dealers. Its legs 

 are esteemed as an article of food, and it is also reared or collected 

 in considerable numbers to su])ply biological laboratories. 



Distrihntion: Common in North America, east of Sierra Nevada 

 Mountains. (Dickerson, 190G.) 



Michigan : Specimens in the University Museum from Houghton, 

 Ontonagon, Iron, Dickinson, Cheboygan, Crawford, Iosco, Arenac 

 (Charity Island), Huron, Oceana, Barry, Oakland, Livingston, 

 Washtenaw, Allegan, Calhoun, Kalamazoo, Cass and St. Joseph 

 Counties. The writers have also examined specimens from Gratiot 

 (Jounty. Reported from Eaton County (Clark, 1902) ; St. Clair 

 County (Cope, 1889) ; Eaton, Van Buren, St. Joseph, Montcalm. 

 Kent, Ottawa, Antrim, Kalamazoo and Barry Counties (Gibbs. 

 Notestein and Clark, 1905) ; Oakland County (Hankinson, 1908) ; 

 Ontonagon County (Ruthven, 1901a) ; Ontonagon, Houghton and 

 Marquette Counties (Ruthven, 1906) ; Cheboygan County (Ruthven, 

 1911) ; Huron County (Ruthven, 1911a) : Cass County (Thompson, 

 1911). 



KANA PAL.USTRIS Le Coute. 



PICKEREL FROG. 

 (PI. IV b.) 



Descnpiion: Body slender. Lateral fold very broad but not 

 elevated. Skin more or less smooth. Lender surface of thighs 



slightly granular. Eyes prominent. Glandular fold from eve to 

 shoulder. No external vocal i)Ouch. 



Ground color always some shade of brown, with two rows of 

 more or less square spots of dark brown between the lateral folds, 

 and two lows of smaller brown spots beneath. Lateral folds 

 lighter than ground color. L'nder surface white anteriorly, bright 

 yellow posteriorly. The yelloAV may extend along the sides and out 

 under the fore arms. A consj)icu()us light line from eye to shoulder. 

 Upper surface of limbs barred with brown. Jaws marked as in it. 

 pipiens. A brown spot on the snout and one above each eye. 



