Hyla femoralis 285 



Gravid females: April 25, April 26, June 3, June 4 (3), June 9 (2), July 3. 

 This gives a period beginning before April- July 3. In 1922 we have spent 

 females from July 3-August 7 and gravid females June 29, July 2, July 3 (3), 

 July 6, July 11, July 12. This gives a restricted period of June 29- July 12. 



On the basis of mated pairs we have the first date May 20, 192 1, followed 

 by records on May 21, 1921, June 4, 1921, July 3, 192 1, July 2, 1922, July 3, 

 1922 (2), July II, 1922 (4), or a period from May 20- July 11. On the basis of 

 recorded field eggs we have eggs taken May 21, 192 1, May 22, 192 1, May 26, 

 1921, May 27, 1921, June 4, 1921, June 5, 1921, June 6, 1921, July 3, 1921. 

 In 1922 we have field eggs July 3, July 4, July 11, July 13, July 27, August 9, 

 August 17. In 1922, the last chorus was recorded August 20, though some 

 called until mid-September. 



Viewed from records of spent or unspent females, choruses, field egg rec- 

 ords, mated pairs and transformation dates (June i6-August 9) the ovulation 

 begins as early as April 20 or 25 and extends to late August or September i. 



Temperature and humidity. In 192 1 the temperature of ovulation periods 

 were 82-95 maxima and minima 61-74°. Either before, during or after these 

 periods rains of 1.22, 1.60, 2.80, 1.76, i.oo, 2.88, 2.27 and 1.60 inches prevailed 

 in stations around the swamp. In 1922 the maxima were 81-96°, the minima 

 64-74°, the rains before, during or after breeding were 2.00, .80, .48, 1.80, 1.60 

 and 3.47 inches in stations about the swamp. With this species, like other 

 southeastern species, humidity is the greatest factor. Temperature is sec- 

 ondary if it be above a certain essential minimum. 



Egg-laying process. The films are so like those of Hyla versicolor they must 

 lay their eggs in the same fashion. We often found groups of films 3-8 in 

 number. These groups doubtless represented the 500-768 complement of one 

 female. In the first captive pair the one film had 5 centers. The large films 

 of 200, 150, 125 or 100 would not yield more than 3 or 4 films for a complement 

 (500 eggs) if each film of the complement were large. 



EGGS 



Attachment, egg mass. The first mass identified positively came the night 

 of May 20-21, 192 1, for a pair captured that evening. This was laid in cap- 

 tivity. "The mass is 15-16 inches long. All connected, this is partially 

 floating and partially resting on the bottom of the tray. The water is 3/4 of 

 an inch deep. This floating mass suggests the same of Hyla versicolor. There 

 are five centers of oviposition apparent." Our first field notes at the same 

 time are: "Found egg band attached to stems of grasses. It is 2-3 inches long 

 and 1/2 inch in width, brown above and yellowish or cream below. Now it is 

 1/4-1/2 or I inch below surface of the water. Was it at surface before today's 

 rain or laid beneath surface? This pond is out in the open. Another comple- 

 ment of three bands; one 3-4 inches long; another 6 inches; the third 4-5 inches, 

 brown and yellowish. This is in water below the surface slightly and amongst 

 grass where two small pine top branches had faflen in the water. Find another 

 complement of four masses one 2x2 inches; one 1x1/2 inches in diameter; 

 one bandlike. Probably close to surface before today's rain. Place where 



