. British fresh-water Copepoda. --. Copepoda; Crustacea. 208 BRITISH FRESH-WATER COPEPODA. 7. Swimming-legs more slender. 8. Egg-sac with few eggs. De Lint (1922b, p. 82) adds, as the most important distinction: 9. Greatest width in head region, instead of middle of thorax as in E. Taking these points in order : 1. So far as size is concerned there is every gradation, and in one population the range is great. For example, Falmouth (females) -94-1-41 mm. ; R. Bure, 1-2-1-7 mm. ; E. Tees, 1-4-1-9 mm. The only British specimens which fall within the limits given for E. hirundoides are t
. British fresh-water Copepoda. --. Copepoda; Crustacea. 208 BRITISH FRESH-WATER COPEPODA. 7. Swimming-legs more slender. 8. Egg-sac with few eggs. De Lint (1922b, p. 82) adds, as the most important distinction: 9. Greatest width in head region, instead of middle of thorax as in E. Taking these points in order : 1. So far as size is concerned there is every gradation, and in one population the range is great. For example, Falmouth (females) -94-1-41 mm. ; R. Bure, 1-2-1-7 mm. ; E. Tees, 1-4-1-9 mm. The only British specimens which fall within the limits given for E. hirundoides are those from Falmouth and the R. Tamar. 2. While the dorsal hump is generally absent from the larger, heavier form, it is not always so. It is present in all specimens examined from the Tamar, but absent from the Falmouth 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 Gurney, Robert. London : Ray Society
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Keywords: ., bookcentury1900, books, booksubjectcopepoda, booksubjectcrustacea
