The difference in the number of eyes with which spiders are provided, proposed as the basis of their distribution into tribes
Subtitle: with descriptions of newly discovered species, and the characters of a new family and three new genera of spiders
By: by John Blackwall ; read June 18, 1839, and April 21, 1840.
Series: Landmarks of science II
Publisher: R. Taylor
Published: 1841
Place of publication: London
Language: eng
Format: Microform
Number of pages: 670
Subjects: Spiders -- Classification.
Genres: Classification.
Notes: Includes bibliographical references.

Microfiche. New York, N.Y. Readex Microprint Corporation, [1985?] (Landmarks II)

In Transactions of the Linnean Society of London (London, England : 1804), v. 18 (1841), p. 601-670.