122 DEVELOPMENT OF THE MONOTREMES AND CERATODUS. 
List of sists placed on the table see 
NOTREMATA, 
1. Series of early stages of "Gel us, from a ad hours afte 
fertilization to the newly laid vm “ata about the stage of a 36-hour hick: 
2. Series a arty stages of Echidna, from just before laying s the newly 
hatched foetus. 
3. Various stages of young Echidna, from hatching up to 5 inches long. 
DIpnot. 
1. Complete series of Ceratodus, from the seer egg to hatching. 
2. Gabe on of young Ceratodus after hatchin 
3. a e “rags ing live Ceratodus, aged ‘1 month and 10 days from 
ARSUPIALIA 
1, Series ic about thirty stages, from segmenting egg up to birth of 
Ei retos cinereus 
2 Di - almaturus ru 
Us. 
3. Specimens showing the arrangement of the embryonic membranes in 
Macropus major. 
