Freshwater Sponges, Hydroids & Polyzoa
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About this book
Freshwater Sponges, Hydroids & Polyzoa is a work by Nelson Annandale. A list headed Malabar Zone covers the Western Ghats from Tapti R. to Cape Comorin and eastwards to the sea, names, among others, the sponges Trochospongilla pennsylvanica and Corvospongilla lapidosa, and says of hydroids: None recorded. A further list covers the Indo-Gangetic Plain, from Sind to the Brahmaputra, and names sponges including Ephydatia meyeni and Trochospongilla latouchiana, each marked Lower Bengal.
A description of a sponge says the skeleton is extremely dense owing to the large number of spicules it contains, but almost structureless. A section headed Spicules says the skeleton-spicules are sausage-shaped and often a little swollen at the ends or constricted in the middle. The text says the common investment in living colonies is often as much as two inches thick and has a translucent dark greenish colour due to the presence in it of green cells. A figure of Pectinatella burmanica shows a polypide with the lophophore expanded, and its caption gives the specimen as from the Sur Lake, Orissa.
About the author
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Book facts
- Author
- Nelson Annandale
- Reading time
- About 7 hours
- Pages
- 255
- Language
- English
- Genre
- Biology
- Formats
- PDF, EPUB, Read online