. Bulletin - United States National Museum. Science. 122 NATIONAL MUSEUM BULLETIN 292 Ecological notes.—Undoubtedly this small anomuran crab is much more abundant on Dominica than indicated by our single record on the south side of the isthmus that adjoins Scotts Head to the mainland (pi. 3a). Here, above the high-tide line on February 27,. Figure 32.—Petrolisthes quadratus, male (carapace length mm) from Dominica station 110. 1966, Dr. R. B. Manning and Hobbs were collecting along the cobble beach searching for Geograpsus lividus and Cyclograpsiis integer. In this area, the rocks, 1
. Bulletin - United States National Museum. Science. 122 NATIONAL MUSEUM BULLETIN 292 Ecological notes.—Undoubtedly this small anomuran crab is much more abundant on Dominica than indicated by our single record on the south side of the isthmus that adjoins Scotts Head to the mainland (pi. 3a). Here, above the high-tide line on February 27,. Figure 32.—Petrolisthes quadratus, male (carapace length mm) from Dominica station 110. 1966, Dr. R. B. Manning and Hobbs were collecting along the cobble beach searching for Geograpsus lividus and Cyclograpsiis integer. In this area, the rocks, 1 to 10 inches in diameter, are pUed upon one another to a depth of one foot. In the splash zone, near and at the sand level, Petrolisthes quadratus was common, outnumbering Geograpsus by far and as abundant as Cyclograpsus, if not more so. A foot or so up the beach from where Petrolisthes was most numerous, Cyclograpsus. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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