44 Frogs of the Okefinokee Swamp 



extend under the end of the third lower 

 row; tail musculature in tail depth 

 1 . 6-2 .3, average 1.85; internasal space 

 1 . 5-2 . 16 in interorbital space, average 

 1.86; spiracle i . 2 5-1 . 7 nearer eye than 

 vent or base of hind legs, average i . 45. 

 Egg mass long file, no inner tube, some- 

 times two rows of eggs. Michigan — New 

 England — Florida — Texas Buf of owleri. 

 cc. Anus dextral; spiracle distinctly lateral on or near body axis; 



d. Papillary border on side with an emargination ; tadpoles 50- 

 149 mm. in length; papillary fringe on upper labium extends 

 not at all inward beyond the end of the upper fringe of teeth 

 or only 1/8 to 1/16 of the length of the fringe; length of 

 horny beak in upper fringe of teeth i . o to 1.5 times; labial 



teeth 2/3 or 3/3 or 3/4 or more Ranidae. 



e. Labial teeth 2/3 occasionally 3/3 rarely 1/3; tadpoles 

 74-150 mm. in length; dorsal crest not extending to 

 vertical of the spiracle, but usually just ahead of the buds 

 of the hind legs; tail always elliptical not spathulate; 

 upper fringe of teeth equal to or slightly larger (never 

 1 . 5 times) the horny beak. 



f . Tadpoles 74-84 mm. ; tadpoles usually transform the 

 same season they are born; transformation sizes 18 

 to 30 mm. average 24 mm. (except R. aesopus); 

 tadpoles (except in R. aesopus) not strongly pigment- 

 ed on belly, viscera plainly showing through skin (in 

 spirit specimens.) Egg globular or plinthlike be- 

 neath surface of water, 

 g . Body in tail 2 . 1 5-2 .85, average 2.6; depth of 

 tail in length of tail 2.6-3.5, average 3.0; 

 nostril i .0-1 . 5. nearer eye than snout, average 

 1.25; eye i. 0-1.3 nearer spiracle than snout, 

 average i . 1 2 ; median space between the second 

 upper labial row i . 0-2 . o times the length of 

 either lateral part of this row; third lower row 

 .33-. 66 shorter than the first or second rows; 

 tail covered with large prominent dark spots; 

 belly strongly pigmented, in spirits it looks 

 white; viscera not visible. South Carolina — 

 Florida — Louisiana. (Viosca) . Rana aesopus. 

 gg. Body in tail i .3-2 . 2, averages (i . 53, 16, 1.7); 

 depth of tail in length of tail 2 . 3-3 . 4, averages 

 2.7, 2.65,3.0; belly not strongly pigmented, in 

 spirits dark, viscera show through the skin. 



