. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SECONDARY SEXUAL CHARACTERS OF CRAYFISHES. 3 be in other species is not known, and not enough aberrant specimens have been collected to justify an opinion. The attempt has been made to study the relative proportion of aberrant and normal specimens in single localities in order to discover whether the aberrant cases are widely and uniformly distributed or whether they are concentrated in single localities. DESCRIPTION OF CASES. Case number one, a specimen of Cambarus propinquus, 52 mm. long, was collected from a small tributa
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SECONDARY SEXUAL CHARACTERS OF CRAYFISHES. 3 be in other species is not known, and not enough aberrant specimens have been collected to justify an opinion. The attempt has been made to study the relative proportion of aberrant and normal specimens in single localities in order to discover whether the aberrant cases are widely and uniformly distributed or whether they are concentrated in single localities. DESCRIPTION OF CASES. Case number one, a specimen of Cambarus propinquus, 52 mm. long, was collected from a small tributary of Turtle Creek at Carvers Rock, Wisconsin, on July 16, 1922. Normal genital apertures occur at the bases of the third walking legs, and in addition a fully developed genital aperture is found at the base of the left second walking leg. Upon dissection it appears that a normal oviduct occurs upon the right side but that two oviducts. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
