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. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. new British Entomostraca. 237 at its base there are two or three small hairs. The two poste- rior thoracic segments are distinctly marked off, and each bears a dorsal fringe of very lon- delicate hairs. In the descriptions given by Hartwig and by Keilhack no mention is made of the lateral groups of hairs on the post- abdomen, and, though these are only visible under a high magnification, it is most unlikely that they would be over- looked. The presence of these groups of hairs

. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. new British Entomostraca. 237 at its base there are two or three small hairs. The two poste- rior thoracic segments are distinctly marked off, and each bears a dorsal fringe of very lon- delicate hairs. In the descriptions given by Hartwig and by Keilhack no mention is made of the lateral groups of hairs on the post- abdomen, and, though these are only visible under a high magnification, it is most unlikely that they would be over- looked. The presence of these groups of hairs Stock Photo
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Library Book Collection / Alamy Stock Photo

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RMP3DC

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7.1 MB (204.7 KB Compressed download)

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1860 x 1343 px | 31.5 x 22.7 cm | 12.4 x 9 inches | 150dpi

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. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. new British Entomostraca. 237 at its base there are two or three small hairs. The two poste- rior thoracic segments are distinctly marked off, and each bears a dorsal fringe of very lon- delicate hairs. In the descriptions given by Hartwig and by Keilhack no mention is made of the lateral groups of hairs on the post- abdomen, and, though these are only visible under a high magnification, it is most unlikely that they would be over- looked. The presence of these groups of hairs and of the Fig. 1.. Alona protzi, Hartwig. 1. Side-view of female. 2. Antennfe and upper lip. 3. Postabclomen. long dorsal thoracic fringes distinguish my specimens rather markedly from the type, but the agreement in other respects is so exact that there can be no doubt that they belong to this species. The labium is acutely pointed, which is most unusual in the genus Al&na, and serves alone to distinguish it from the species most closely resembling it. Keilhack considers that A. protzi is most nearly related to A. cambouei,. 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 work.. London, Taylor and Francis, Ltd

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