The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. n.d. Abstract of Rolleston, Forms of Animal Life, etc. CUL-DAR81.115. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR80-86 contain material for Darwin's book Descent of man (1871).

George Rolleston. 1870. Forms of Animal Life: being outlines of zoological classification based upon anatomical investigation, etc. London.

[115]

XCVIII Brachiopoda said to be ordinary dioecious

XCIII. Gasteropods either dioecious or Hermaphrodite

XCIV. Pteropoda Hermaphrodite

Vermes - distinct class from Arthropoda

[115v]

Lower animals. Ch. II Sexual selection

Rolleston p. CLVI speaks of Anthozoa & Hydrozoa as ordinarily dioecious. - The Echinodermata do not differ externally sexually at all (except the true sexual gland) & are (p. cxlv) with the exception of Synaptidae dioecious.

Ascidians are Hermaphrodite; so are Polyzoa

p XCVII. Lamellibranchiata with a few exceptions are dioecious

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)