. The biology of spiders. Spiders; Insects. SOME OTHER ARACHNIDA 331 by dorsal and ventral plates, but, since the plates covering the eleventh and twelfth segments are fused together, only eleven segments can be seen from above. In the same way the last four ventral plates are joined, so that only nine can be seen from below. The dorsal plates are often divided by a median line of soft membrane. The cephalothorax has no trace of segmentation beyond a few transverse striae, present in some species. The eyes. Fig. 112.—Obisium muscorum. A common British false-scorpion. After Kew. are two or four
. The biology of spiders. Spiders; Insects. SOME OTHER ARACHNIDA 331 by dorsal and ventral plates, but, since the plates covering the eleventh and twelfth segments are fused together, only eleven segments can be seen from above. In the same way the last four ventral plates are joined, so that only nine can be seen from below. The dorsal plates are often divided by a median line of soft membrane. The cephalothorax has no trace of segmentation beyond a few transverse striae, present in some species. The eyes. Fig. 112.—Obisium muscorum. A common British false-scorpion. After Kew. are two or four in number, save in some species which are blind, and are placed in the usual position near the front of the cephalothorax. They are pearly white in colour and are never much raised above the level of the carapace. The ventral surface of the cephalothorax is formed by the coxal joints of the legs and palpi; only in Garypus is there any trace of a sternum. The abdomen, unlike that of the true scorpion, bears no. 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 Savory, Theodore Horace, 1896-. London : Sidgwick & Jackson
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecti, booksubjectspiders
