346 Frogs of the Okefinokee Sivanip 



supraorbital branch far past the nostril to snout and an infraorbital branch 

 also to the snout and quite far below the nostril in its course. Below the 

 principal lateral series is a lower one on side around the spiracle but forward it 

 is not very distinct. 



Mouth parts. Teeth 2/3. Edge of upper labium slightly larger than beak 

 and fringed with teeth. In either corner a row of teeth about 1/3-1/4 of the 

 upper fringe. The outer end of this lateral row usually (abnormal in figure in 

 this regard) does not extend beyond the end of the upper fringe. The median 

 space between lateral rows is one to two times either row, nearer the condition 

 in R. pipiens. The third lower row about equal to or slightly larger than 

 single row of lower labial papillae, 1/3-2/7 shorter than first or second rows 

 which are equal and larger than the beak. The tadpole is clearly of the H. 

 pipiens or R. sphenocephala type. 



Measurements. Length of body (28-33.5 mm.) in tail (74-81 mm.) 2.15- 

 2.85, average 2.62. Width 13. 5-19 mm. of body in its own length 1.6-2.07, 

 average 1.8. Depth (12-15 mm.) of body .88-1.7 in body width, average 1.14. 

 Depth of body 1.5-2.4 in body length, average 2.01. Depth (10-18. 5 mm.) 

 of tail in length of tail 2.6-3.5, average 3.05. Muscular part (6-9 mm.) 

 1. 45-1. 9 in depth of tail, average 1.75. Spiracle 1.1-1.7 nearer base of hind 

 legs or vent region (14-16. 5 mm.) than the tip of the snout, average 1.36. 

 Spiracle 1.4-2.0 nearer eye than base of hind legs or vent, average 1.55. Eye 

 1. 0-1.3 nearer to spiracle (5.0-7.0 mm.) than tip of snout (6-9 mm.), average 

 1. 12. Nostril 1-1.5 nearer eye (2.5-5.0 mm.) than snout (3.0-6.0 mm.), 

 average 1.25. Mouth (3.0-5.0 mm.) usually .84-1.26 larger than internasal 

 space (2.8-5.0 mm.), average 1.06. Mouth contained i. 25-1. 66 (average 1.5) 

 in interorbital distance (4.5-8.0 mm.). Internasal space contained in inter- 

 orbital space 1. 3 -1. 9, average 1.57. 



The dimensions of the largest tadpole are: 



General remarks. For a long time there were two forms R. aesopus and 

 R. virgaiipes whose tadpoles we did not know positively. At that time there 

 were two tadpoles we were collecting we had not placed; one was not placed 

 until late in the season and proved to be the larva of R. heckscheri. The other 

 by elimination had to be R. aesopus or R. viigatipes. When these larvae began 

 to show four rows of spots on the back of the tadpole before hind legs were 

 well developed we were quite certain. But with the coming of the hind legs 

 and outpushing of the fore legs, the coloration of the dorsum of the adult 



