Male European obstetrical = common midwife toad (Alytes obstetricans) (Fig.5) and the Ceylonese tree frog Rhacophorus reticulatus = reticulated-thigh shrub frog (Pseudophilautus reticulatus) (Fig.6)
Date 1901
Source Popular Science Monthly Volume 59; https://archive.org/details/popularsciencemo59newy/page/72/mode/2up
Author Unknown author
Source: https://commons.wikimedia.org/wiki/File:PSM_V59_D083_Male_european_obstetrical_and_the_ceylonese_tree_frog.png

Fig.5. Male European obstetrical = common midwife toad (Alytes obstetricans)
The common midwife toad (Alytes obstetricans) is a species of midwife frog in the family Alytidae (formerly Discoglossidae). It is found in Belgium, France, Germany, Luxembourg, the Netherlands, Portugal, Spain, Switzerland, and the United Kingdom (although, in the latter, only as an introduction). Like other members of its genus (Alytes), the male toad carries the eggs around entwined on his back and thighs until they are ready to hatch.

Fig.6. Ceylonese tree frog Rhacophorus reticulatus = reticulated-thigh shrub frog (Pseudophilautus reticulatus)
Pseudophilautus reticulatus, known as Reticulated-thigh Shrub Frog, is a species of frog in the family Rhacophoridae. It is endemic to Sri Lanka. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.