. British fresh-water Copepoda. --. Copepoda; Crustacea. 238 BRITISH FRESH-WATER COPEPODA. sometimes with trace of separation dorsally ; width to length about 26 : 30. Receptaculum consisting of a large oval anterior part extending across whole somite, and a narrower posterior part, which is not always evident. The form, as Schmeil showed, depends upon the degree to which it is filled. Furcal rami nearly parallel, 4-5 times as long as wide, and about 120-130°/oo of body length ; lateral seta inserted in distal third. Fig. 1709.—Leg 3. Fig. 1710.—Leg 4. Fig. 1711.—Legs 5 and 6. Fig. 1712.—Anten
. British fresh-water Copepoda. --. Copepoda; Crustacea. 238 BRITISH FRESH-WATER COPEPODA. sometimes with trace of separation dorsally ; width to length about 26 : 30. Receptaculum consisting of a large oval anterior part extending across whole somite, and a narrower posterior part, which is not always evident. The form, as Schmeil showed, depends upon the degree to which it is filled. Furcal rami nearly parallel, 4-5 times as long as wide, and about 120-130°/oo of body length ; lateral seta inserted in distal third. Fig. 1709.—Leg 3. Fig. 1710.—Leg 4. Fig. 1711.—Legs 5 and 6. Fig. 1712.—Antennule, male, segs. 1 and 2. (66-73%) ; inner apical seta very short, shorter than outer, and less than one-third of ramus ; setae 2 and 3 very long. Antennule of 16 segments, reaching about to end of cephalothorax, sometimes markedly shorter ; seg. 3 undivided, or partially divided ; aesthete on seg. 11. Legs with exopod of leg 1 and endopods of legs 1 and 2, 2-segmented, seg. 2 representing segs. 2 and 3 ; spine formula ; seta formula for exopod 3 of legs 1-3, Basis of characteristic form, the inner. 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
