Gasirophryne carolinensis 



463 



June 26 2 . 59 inches and .70 the day before. 



28 .57 



" 29 3.02 



" 30 2.08 



July I T 



2 .68 



3 3-47 

 " 4 I. 00 



6 4.56 



7 .89 

 " 26 1.32 

 " 29 2.84 



(For temperature of chorus records see Ovulation). 



MATING 



Male {From life, April 25, 1921) (Non Ridgway). Top of head and upper 

 eyelids mineral gray, pale smoke gray or with yellowish cast. June 5, 192 1. 

 Under parts dusky and bluish- white. White on throat, fine dots not blotches; 

 therefore throat looks blacker in male. All over back dusky with fine bluish- 

 white spots or dots. Pupil circular. Iris black with bluish-white. 



Female {From life, June 9, 1921). Lighter, larger. Practically no spots 

 on pectoral region. None on throat. Throat same color as belly. Practically 

 no rusty spots. Ground color of the dorsum more greenish, i.e., olive gray 

 or mineral gray or grayish olive. Sometimes at breeding season males and 

 females may be alike in color, e.g., on April 24, 1921, several were thus, several 

 pairs reddish, one pair gray. Most of pairs however were diverse. 



Structural differences. From its first description authors have noted males 

 with a sub-gular vocal vesicle." Or put in the negative H. Garman (1892, 

 p. 330) has males with "no saccular dilations of the skin at the angles of the 

 mouth." His affirmative is "Males with an internal, sub-gular vocal sac." 



We found that in the Okefinokee frogs there were some males revealed 

 externally at 21 mm. and females at 22 mm., and our largest male was 29 

 mm. and largest female 30 mm. In the whole range of the species we found 

 males and females so indicated externally at 20 mm., the largest male 30 

 mm. and the largest females 31-36 mm. They apparently begin breeding 

 the second spring or summer after transformation. 



The male's throat in alcohol may look black, bluish-black, bluish-gray, 

 or in many cases darker than the rest of the underparts. The female has the 

 throat much as the other underparts though the light or bluish-white spots 

 on the throat are smaller than on the venter proper. The male's throat 

 seldom has the lighter spots. Frequently the males in alcohol have the lower 

 throat just ahead of pectoral region thrown into one or two transverse folds 

 or plaits, sometimes it appears as one or more ridges. The lower jaw of the 

 male often has light spots and is brownish-black like venter, but often it is 

 uniform self color like the throat. 



The actual measurements of several mated pairs show the males usually 

 smaller. For example one ovulating pair of July 4, 1922, caught at midnight 



