I20 Frogs of the Okefinokee Swamp 



Iris cream color, rim around pupil and eye napthalene yellow; rest largely 

 black with some cartridge buff or ivory yellow. 



Male with lower throat between angles of mouth dark olive gray, more or 

 less puffed out, pleated or wrinkled. All of throat darker than rest of ventral 

 parts but lower half darker than mental part. Female with throat same as rest 

 of venter. Slight dark spot in anterior posterior region. 



Structural differences. Neither Holbrook nor LeConte indicated the sexual 

 differences. Miss Dickerson was the first to indicate that the throat of the 

 male is dusky. Deckert (1914b, No. 9, p. 2) says "The throat of the male is 

 black, and when the pouch is distended, forms a small elongate bladder, 

 slanting upward, and about 3/4 inch long and 1/4 inch in diameter". 



In 191 2 we made these notes on the males and females. "These four females 

 are the lightest colored of the twenty-four, the upper parts being grayish- 

 brown and the spots being most distinct. In one of the spent females the 

 underparts are pure white and the other gravid female has only a few faint 

 spot's but the males are the darker specimens. In all of these a gular fold or 

 flap extends acrosss the lower throat connecting the posterior ends of each 

 ramus of the lower jaw. In the larger males when the vocal sac is not dis- 

 tended it lies behind this gular line, and looks like a triangular apron on the 

 pectoral region the apex pointing backward and the base being on the gular 

 line. On the females this gular barely shows. In the males we could discover 

 no excrescences on the first two fingers. This breeding evidence is one of the 

 strongest arguments to prove that this little animal is not a spinose young B. 

 terrestris or americanus as Boulenger thought, and is corroborative of Hol- 

 brook's third reason for its establishment (Holbrook, 1842, V, p. 15)." 



A study of our 191 2, 192 1 and 1922 specimens and such other Bufo 

 quercicus material which has come under our observation resolve our data in 

 the following categories: 



1. The range of our males from Okefinokee is from 19-30 mm., of males from 

 widespread parts of its range (U. S. N. material) 20-29 mm, 



2. The range of our females from Okefinokee is from 20.5-32 mm.; of other 

 females from U. S. Mus. collections (26 lots) elsewhere 22-28 mm. 



3. The grand average of all females measured is 25 mm., mode, 26 mm. The 69 

 females measured were as follows: i at 20.5 mm.; 3 at 21 mm.; 7, 22 mm.; 9, 

 23 mm.; 4, 24 mm.; 12, 25 mm.; 13, 26 mm.; 8, 27 mm.; 6, 28 mm.; 2, 29 mm.; 

 2, 30 mm.; i, 31 mm.; i, 32 mm. 



4. The grand average of all males measured is 23.6 mm., mode 25 mm. The 89 

 males measured were as follows: 5 at 19 mm.; 4, 20 mm.; 3, 21 mm.; 11, 22 

 mm.; 7, 23 mm.; 11, 24 mm.; 22, 25 mm.; 12, 26 mm.; 5, 27 mm.; 5, 28 mm.; 

 I, 29 mm.; and i, 30 mm. 



5. The measurements of 11 actual pairs are somewhat as follows: 



June 4, 1921 22cf X 259 ; 26cf X 30.59 ; 



July 3, 1921 25cf X 26.59 ; 23cf X 24.59 ; 24cf X 269 ■.2sd' X 269 . 



July 3, 1922 25.50^ X269;26cr X 289 24cf X319. 



July 26, 1922 26.5cf X 279 ; 



July 27, 1922 25.5cf X 25.59 . 

 In no instance was female smaller; but the average is no more than i 1/2 mm. 

 greater in the females, the greatest range of difference 7 mm., the least o mm. 



