198 Frogs of the Okefinokee Swamp 



to beyond the middle of the body. Beneath whitish, sometimes tinged with 

 yellow with a few black spots irregularly assembled in groups, cancellately 

 reticualate . . ., arms and legs spotted and barred with black .... Chin 

 often dusky. 



(We will not undertake to describe coloration in spirits. See coloration 

 from life under mating). 



STRUCTURAL CHARACTERS 

 (See General Appearance) 



Cope (1889) held that the skin was warty, above the head acuminate, the 

 width entering the total three times; heel reaching anterior to orbit; size 

 larger. All these characters are contrasted with C. feriarum and C. triseriatus. 

 Hay in 1892 follows the same general characterization of C. nigritus nigritus. 



Baird (1854, p. 60) when he separates Chorophilus nigritus from Helo- 

 caetes triseriatus, H. clarkii and H. feriarum he said it was "smooth above, 

 granulated beneath. Extremities of limbs simple not dilated at tip. Hands 

 free; feet with a slight basal web, which is entirely wanting between the two 

 other toes. Tongue orbicular; emarginate behind. Teeth posterior to the 

 nares. Tympanum distinct. Transverse apophyses of sacral vertebrae 

 dilated into triangular pallets." 



MEASUREMENTS 



(Recent Material) 



Head to angle of mouth 1.15 (25 mm.cf)-i.o, (28 mm.9) in width of 

 head; head to rear of tympanum 1.0-.9 in width of head; head to angle of 

 mouth 3.37-3.1 in length of body; head to rear of tympanum 2.95-2.8 in 

 length of body; snout .52-.87 in first finger; snout .74-.87 in fourth finger; 

 snout .60-.76 in first toe; eye i. 50-1. 2 in snout; eye .60-54 in tympanum; 

 eye .8-.87 in first finger; tympanum 3.4-3.4 in intertympanic width; tym- 

 panum 2.5-1.84 in snout; internasal width .80-.83 in upper eyehd width; 

 interorbital width .80-.83 in upper eyelid width; interorbital width i. 0-1.2 in 

 internasal width; interorbital width 2.8-3.4 in intertympanic width. 



Forelwib. Fore hmb — 1.92-2.0 in length of body; fore limb 3.0-3.0 in 

 hind limb; first finger 2.0-1.75 in third finger; second finger 1.7-1.4 in third 

 finger; second finger .85-.8 in first finger; third finger .70-. 71 in second toe; 

 fourth finger i. 4-1. 7 5 in third finger; fourth finger .70-1.0 in first finger; 

 internasal width 1.1-1.33 in first finger; internasal width i. 27-1. 66 in second 

 finger; internasal width 2.18-2.33 in third finger; internasal width 1.5- 1.3 3 

 in fourth finger. 



Hindlimh. Length 1.5 6- 1.5 in hind limb; tibia 2.0-2.0 in length; tibia 

 3.1-3.0 in hind limb; tibia i. 03-1.0 in fore limb; tibia .9-. 95 in hind foot 

 without tarsus; first toe 1.2 1- 1.4 in second toe; first toe 2.57-2.4 in third toe; 

 first toe 2.71-3.6 in fourth toe; first toe 2.64-2.6 in fifth toe; second toe 2.1 -1.9 

 in third toe; second toe 2.2-2.6 in fourth toe; second toe 2.1 -1.8 in fifth toe; 

 third toe 1.05- 1.3 5 in fourth toe; third toe 1.02 -.9 5 in fifth toe; fourth toe 

 1. 5-1.0 in hind foot; fourth toe i. 65-1. 06 in tibia; fourth toe 1.71-1.06 in fore 



