Rana septentrionalis 399 



in third finger; second finger i. 3-1. 4-1. 33-1. 4-1. 6-1. 3 in third finger; second 

 finger 1.0-1.0-1.0-.95-1.0-.91 in first finger; third finger 1.66-1.3-.93-1.2- 

 1.05-1,0 in second toe; fourth finger 1.3-1.45-1.16-1.2-1.3-1.3 in third finger; 

 fourth finger 1.07-1.15-.70-.85-.8-.9 in first toe; internasal width 2.0-2.0- 

 1. 74-1. 9-1. 75-2. 2 in first finger; internasal width 2. 0-2.0-1. 9-1. 8-1. 83-2. 2 in 

 second finger; internasal width 2.6-2.87-2.5-2.5-2.9-2.9 in third finger; inter- 

 nasal width 2.0-2.0-2.05-2,1-2.25-2.2 in fourth finger. 



Hindlimh: length i. 64-1. 46-1. 45-1. 3 7-1. 45-1. 3 in hind limb; tibia 2.0- 

 2.0-2.0-2.2-2,2-2,2 inlength; tibia3. 2-2. 93-3. 0-3. 0-3. 2-3. 03 in hindlimb;tibia 

 1. 05-1. 07-1. 08-1. 03-1. 0-.93 in forelimb; tibia 1.08-1,13-1,08-1.1-1,03-1.03 

 in hind foot (without tarsus); first toe 1.3-1.55-1.53-1.55-1.63-1,45 in second 

 toe; first toe 2,0-1,9-2,6-2,1-2,04-2.3 in third toe; first toe 2.66-2.66-3.5- 

 3. 1-2.7-3. 1 ill fourth toe; first toe 1.9-2.0-2.3-2. 16-2.2-2. i in fifth toe; 

 second toe 1.5-1.2-1.7-1,4-1,25-1.6 in third toe; second toe 2.0-1,8-2.3-2,0- 

 1.7-2,1 in fourth toe; second toe 1,4-1,3-1,5-1,3-1,4-1,5 in fifth toe; third 

 toe 1,3-1,47-1.36-1.46-1.4-1.35 in fourth toe; third toe o,93-i,o5-,9-i,o3 

 i.i3-,93 in fifth toe; fourth toe 1,3-1,3-1,3-1.4-1.53-1.34 in hind foot (with 

 tarsus); fourth toe ,925-,9-,9i-,9i-.96-.96 in tibia; fourth toe ,95-94- 

 i.oi-.94-,96-,9 in forelimb; fifth toe 1,38-1.4-1,5-1,43-1,2-1.4 in fourth toe; 

 internasal width 2. 14-2. 25-1. 54-1. 80-1. 83-2.0 in first toe; internasal width 

 3.0-3.5-2.3-2.8-3.0-2.9 in second toe; internasal width 4.4-4.25-4.0-3.8- 

 3.75-4.6 in third toe; internasal width 5.7-6.25-5.4-5.6-5.1-6.2 in fourth toe; 

 internasal width 4.1-4.5-3.4-3.9-4.25-4.3 in fifth toe. 



HABITAT 



Garnier (p. 945) pronounces this species a river frog. "It inhabits spring 

 creeks and rivers, but in lakes and ponds of the purest water I have never seen 

 it nor captured a single specimen." "It is . , , emphatically a river frog. 

 It is never seen in fields nor woods lurking. ..." Pope (191 5, Copeia No 16) 

 records "one from a wood road, which passed through a sphagnum bog," 

 ''Rana septentrionalis common along the banks of Ciss Stream, which flows 

 from Round Pond into Caucmogomoc Lake, Piscataquis Co. (Me.) . , , , They 

 were found on the marshy banks of the stream where bull frogs {Rana cates- 

 heiana) were abundant," Mr, Arthur H. Norton (Pope, Copeia 1915, No, 

 16) observed it "in VanBuren and Caswell, (Me.), August 15-16, 1914. It 

 was found to be numerous in two dead water ponds in Caswell, locally called 

 Mud and Guard Ponds. They were more conspicuous than Rana clamata, 

 inhabiting similar places, i.e., tussocks of sedges on the edges and the beds 

 of lily pads near the shore. At Van Buren they were found in ditches by the 

 railroad track and were common," Pope concludes the mink frog is found in 

 the same localities as R. catesbeiana and R. clamitans, not tending to replace 

 either species. Later Pope (Copeia Dec. 31, 19 18, p. 96) "found it abundant 

 at Tim Pond, Eustis, Franklin Co., Me. It occurred all around the pond; 

 along rocky, wave-beaten shores, in marshes, and in the outlet close to the 

 lake, but never far from water." 



