. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 368 On a new Fossil Spider (Eoatypus Woodwardii). width of the cephalothorax at the caput 2'25; width of cephalothorax from margin to margin across the middle 3*5 millim.; length of palps 2 millim. Both palps are represented by rather thin lines, showing slight marks of joints, and on one palp is a suggestion of a terminal bulb which might indi- cate it to be a young male. The caput and median part of the cephalothorax as viewed from the cast are well elevated and defined; the
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 368 On a new Fossil Spider (Eoatypus Woodwardii). width of the cephalothorax at the caput 2'25; width of cephalothorax from margin to margin across the middle 3*5 millim.; length of palps 2 millim. Both palps are represented by rather thin lines, showing slight marks of joints, and on one palp is a suggestion of a terminal bulb which might indi- cate it to be a young male. The caput and median part of the cephalothorax as viewed from the cast are well elevated and defined; the cephalo- thorax narrows towards the abdomen. But in the original Fia 1. Fig. 2. Fig. 1.—Eoatypus Woodwardii, X 4. Pig. 2,—Ditte, X 4, Outline side view of body. impression in the rock and less distinctly on the casts there appear outlines on either side of the margin of the cephalo- thorax, as though by pressure those parts had been flattened, and only the caput and a part of the dorsum of the cephalo- thorax along the median line had withstood the pressure and had been pushed upward into the matrix by the same. These outlines are visible, but not so distinct in the plaster cast. It is at this point that one experiences difiiculty in deter- mining whether the specimen is related to Attus or to Atypus. If the broader marginal markings are impressions of the original cephalothorax, the inference would be that the spider represented by this fossil belonged to the Atypin^. That such is the case I am strongly inclined to believe, both on the ground just named and the characteristics of the man- dibles as well as the general facies of the impression and cast (see fig. 1) *. In the absence of the characteristic eyes * This figure has been drawn from the cast and compared carefully with one kindly made for me in the Geological Department of the British Museum, and furnished by the Keeper, Dr. Please note that these images are extracted from scanned page images that may
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