442 Frogs of the Okefinokee Swamp 



Same color with black on sides. Smaller stripe from angle of mouth halfway 

 on side Hght or pale ochraceous salmon. This stripe continued over angle of 

 mouth and on to upper jaw pale greenish yellow. Throat sulphur yellow with 

 indefinite brown spots. Rest of under parts cartridge buff to pale chalcedony 

 yellow with beautifully marked bone brown or almost black spots on venter 

 and sides. Back and fore parts of iris neva green. Iris inner rim green and 

 yellow. Iris proper spotted black and empire yellow. 



Female {From life, July 22 1922). Back stripe buffy brown and side stripe 

 also. Back color olive brown. Throat sulphur yellow, also inner edge of sur- 

 face of fore limb. This yellow also from angle of mouth to over arm insertion. 

 Spotting on under parts not so prominent as in male nor so clear cut yet it is 

 conspicuous. Under parts and sides with hardly any wash of yellowish as the 

 male sometimes has on his sides. Females in general on under part look white 

 while males have washes of yellow on throat, sides and slightly on other parts. 

 Front edge and back edge of eye bright green yellow as in the male (see male 

 of July 15, 192 1 ). This female smaller than the four males captured at the 

 same time. 



Female {From life, July 25, 1922). This gravid female has as dark a back 

 ground color as a male and in this respect unlike above specimen of July 

 22, 1922. 



Structural differences. In 1906 (1907, p. 121) Fowler notes the males have 

 "Vocal vesicles large and capable of considerable inflation" and presents a 

 striking plate of the distended sacs of the males and the venters of two males 

 and a female. Boulenger (1920, p. 430) says the male has "a large grayish or 

 blackish external vocal sac on each side between the mouth and shoulder; a 

 feeble pad on the inner side of the first finger." 



The males have the tympanum enlarged but not so strikingly as in Rana 

 grylio, Rana catesbeiana, Rana clamiians or Rana onca nor is the thumb quite 

 as large proportionally. I cannot, however, call it a "feeble" pad. 



The young males at 25-39 mm. have thumb Httle swollen, tympana not 

 very large and vocal sacs not well developed. About 40 mm. the thumb be- 

 gins to enlarge, vocal sacs begin developing and tympana may or may not 

 be large. Certainly by 45 mm. if not before, thumb, vocal sacs and tympana 

 are well developed in the males. However one male at even 38 mm. begins to 

 have thumb enlarging and vocal sacs developing and one male at 42 mm. is 

 almost a full male in tympana, sacs and thumbs. 



Duration. Probably of short duration normally. 



Night or day. Mainly by night, though by day in cloudy or rainy weather 

 when the climaxes come in breeding. 



Amplexation {normal, abnormal, cross). It must be pectoral in this species. 

 No mated pairs have been secured. This species is shy like Rana grylio and 

 Rana catesbeiana. Unlike toads and tree toads none of the males would seize 

 the gravid females we placed with them. 



