Social Patterns in the Leptodactylid Frogs Syrrhophus and Eleutherodactylus

Twenty-two of the females were examined for eggs. In nine specimens, ranging in size from 29 to 53 mm. in snout-vent length, immature egg masses were found. In the remaining 13, ranging from 55 to 69 mm., eggs were in varying stages of development. In three of these the eggs were poorly developed, while in two (55 and 68 mm.) the eggs were large with a gelatinous covering. It should be noted that, while the specimens considered here were collected in July and late September, immature as well as large eggs were found in both months. These findings suggest that the laying season is an extended one. Egg complements of seven specimens ranged from 64 to 137, the average being 94.7. Testes from six males collected in July were prepared for histological examination and carefully studied. In all specimens, the testes showed mature or nearly mature sperm.