366 Frogs of the Okefinokee Sivamp 



or bars. On the hind Hmbs of the younger forms and in the ohve colored group 

 there may be three cross bars on the front half of the femur, three or four 

 bands across the tibia, and three or four on the tarsus and foot. In the rich 

 or deep brown specimens the dark spots obscurely show. Occasionally in 

 these specimens the black body color or sometimes a black color almost 

 wholly covers the upper two-thirds of the posterior faces of the thighs. In 

 all the specimens the body color covers one-half to two-thirds of the posterior 

 faces of the thighs. Occasionallj'' the body color is replaced by black. Beneath 

 this area of body color comes a longitudinal yellowish white or yellowish stripe 

 followed by a prominent dark, black or brown band. Sometimes this is 

 succeeded by another yellowish line followed by a wonderfully brilliant 

 mottling of brown and yellow. In almost all of the largest forms where 

 mottling on under surface of the legs is prominent these yellowish lines are 

 yet indicated by two broken up longitudinal rows of yellow spots. In some 

 the second yellow line is absent. The smaller specimens of females have the 

 underparts except the thighs immaculate. One large male has the whole 

 under parts the most striking black or brown and yellow we have seen in a 

 North American frog. On the posterior face of the tarsus and foot is a 

 prominent dark band with a yellowish line below it on the tarsus. This colora- 

 tion shows best in young forms. These specimens have the forearms unicolor 

 above. The sides of some of the specimens are unspotted while others have 

 some mottling of black chocolate brown and yellow like the venter. Three 

 large males have the under surface of the leg speckled, mottled or reticulated. 

 On either side of the breast and in front of the arm insertion, the dark body 

 color, gray or brown extends as a special area almost or actually to the middle 

 line. Most of the specimens have the whole upper head unstriped or un- 

 spotted. The tip of the snout is more or less white. The web is dusky, in 

 adults very clouded; in young, clear with numerous spots or mottlings. 



STRUCTURAL CHARACTERS (WRITTEN IN 1 91 2) 

 Head smooth, other parts minutely mammillate and pitted, sometimes 

 round on the sides, throat, and lower belly; snout more pointed than in Rana 

 catesbeiana; eyes elevated, large; eyelid rough; nostrils equidistant from eye 

 to tip of snout or slightly nearer the snout ; a prominent fold of skin from the 

 eye over the tympanum to above the shoulders; no lateral fold; groove down 

 middle of back halfway to the vent or sometimes absent; first, second and 

 fourth fingers about equal, long; inner metatarsal tubercle small; no outer 

 tubercle; subarticular tubercles very small; Stejneger ('02) found the per- 

 centages of toes measurements in Rana grijlio and Rana catesbeiana to be as 

 follows: in Rana grylio the third toe in the length of the fourth toe is .81-.84; 

 second toe in the fourth toe, .55-.61; first toe, .34-.39; in Rana catesbeiana, 

 third toe, .70-.76; second toe, .47-.51; first toe, .27-.33. In some of our 

 specimens of Rana grylio the proportional length of the third toe in the fourth 

 is even greater than Stejneger found, being sometimes .85 or .86 while the 

 second toe may be as much as .65 and the first toe .43. The head measured 

 at the tympanum is perceptibly narrower than R. catesbeiana; vomerine teeth 



