Title
Taxonomic studies on the hydras of North America 6 Description of Hydra hymanae, new species
Title Variants
Alternative:
Description of Hydra hymanae
Alternative:
Hydras of North America
Related Titles
Series:
American Museum novitates, no. 1423
By
Hadley, Charles Elmer, 1893-
Forrest, Helen, zoologist.
Type
Book
Material
Published material
Publication info
New York, American Museum of Natural History, [1949]
Notes
Title from caption.
"July 31, 1949."
"Hydra hymanae, new species, is a hydra of medium size, with short tentacles. It is usually found in very rapidly moving water. Its identifying characters are: column 7 to 12 mm. in length, not differentiated into body and stalk but with base bent in the form of a hook; habit of standing partly contracted, with the main portion of the column approximately parallel with the substratum; tentacles usually six in number, about one-half the length of the column, extended in drooping positions; broadly oval, large glutinants with a beak-like projection at the pointed end; unusually large penetrants and volvents; hermaphroditic; testes few, roughly hemispherical, with or without nipples; season of sexual activity October, Novemeber, December; embryo flattened and enclosed in a plano-convex, spined theca attached to the substratum; habitat occasionally still water, more often rapidly moving water. The type locality is Little Falls, New Jersey. Other localities are Verona, Delawanna, Lake Valhalla, all in New Jersey"--P. 13.
Subjects
59.37,1H(7)
,
Classification
,
Cnidaria
,
Hydra
,
Hydra hymanae
,
New Jersey
Call Number
QL1 .A436 no.1423, 1949
Language
English
Identifiers
OCLC:
31838914
Find in a local library
Download MODS