378 



Frogs of the Okefinokee Sivamp 



Muciferous crypts present but rather indistinct, this species easily sepa- 

 rated from R. damitans in this regard. 



Mouth -parts: Teeth 2 '3. Edge of upper labium about equal or slightly 

 longer than the length of the upper horny beak, and fringed by a continuous 

 row of teeth. In either corner, beneath this fringe is only one very short row 

 about one-sixth to one-eighth of the length of the upper fringe. Median 

 space between these two short rows is two and one-half to four and one-half 

 times the length of either of these rows. The outer end of the second upper 

 row does not extend be3^ond the end of the upper fringe of teeth. The third 

 lower labial row of teeth much shorter than the single separate row of papillae, 

 much more than length of horny beak (contained i| times in it) and 13 

 shorter than the second or first lower rows of teeth. These two rows about 

 equal to horny beak in length and equal to each other. The first row may be 

 continuous or interrupted in the middle. In mouth parts it is distinctly of 

 the R. damitans type and nearer this species than R. catesbeiana. 



Measurements. Length of body (31.0-35.6 mm.) in tail (55.0-70.5 mm.) 

 1.7-2.4, average 1.84; width (17-22 mm.) of body in its own length 1.5-2. 15, 

 average 1.8. Depth (14-20 mm.) of body equal to (i.o) or shghtly less (.S-.g) 

 than body width. Depth of body 1.5-2.55 in body length, average 1.98. 

 Depth (17-23 mm.) of tail in length of tail, i. 45-1. 8, average 1.7. Depth of 

 tail 1. 05-1. 5 deeper than depth of body, average 1.2. Muscular part (9.5- 

 14.5 mm.) contained in depth of tail 1.3- 1.7, average 1.5; in smaller specimens 

 1.75-2. 1. Spiracle 1.1-1.6 nearer base of hind legs or vent region (13-19 mm.) 

 than the tip of the snout. Spiracle 1.2 5-1. 9 nearer eye than base of hind legs 

 or vent, average 1.56. Eye 1-1.35 nearer to tip of snout (7-10 mm.) than to 

 spiracle (8-12.5 mm.); in some younger tadpoles occasionally near (.88-95) 

 spiracle. Nostril i. 0-1.4 nearer snout than eye, rarely equidistant. Mouth 

 (4-6 mm.) usually 1.-1.6 larger than internasal space (3.6-5.5 mm.), average 

 1. 15. Mouth contained 1.5-2.37 (average 1.94) in interorbital distance (7- 

 12.0 mm.). Internasal space contained in interorbital space 1.8-2.6, aver- 

 age 2.16. 



The dimensions of the largest tadpole are: 



mm. mm. 



Total length 

 Body length 

 Body depth 

 Body width 

 Tail length 

 Tail depth 

 Musculature of tail 

 Spiracle to snout 



100. o Spiracle to vent 19 



36.6 Spiracle to eye 10 



20. Eye to snout 9 



22.0 Eye to nostril 5 



64 . 4 Nostril to snout 3 

 23.0 Mouth 5 



13.5 Interorbital distance 1 1 

 21.5 Internasal distance 5 



General remarks. The large tadpoles are difficult of capture. Usually it 

 is impossible to haul a minnow seine where they occur. Occasionally when a 

 cypress pond dries up, they can be caught in the centrally cleared space, the 

 normal alligator hole of the pond. Rarely one catches them in the scoops of 



