The third Order, the Ctenophorae, are among the most beautiful of the Acalephs.
"Atlantic Monthly, Volume 10, Number 59, September, 1862" by Various
AGASSIZ, A.: 1874, Embryology of the Ctenophorae.
"The Nature of Animal Light" by E. Newton Harvey
The Ctenophorae differ from other Jelly-fishes in their mode of locomotion.
"Seaside Studies in Natural History" by Elizabeth Cabot Cary Agassiz
The Ctenophora developed later out of a branch of the latter.
"The History of Creation, Vol. II (of 2)" by Ernst Haeckel