. The Quarterly journal of the Geological Society of London. 2. 3. 1 = First segment of post-abdomen. 2 = Third segment of post-abdomen. 3 = Sixth and seventh segments of pre-abdomen. The post-abdomen lies sideways, with the right side upper-most. The dorsal and lateral keels are well marked on the firstfour segments. Nearly all the segments seen are flattened. Thefirst is 5 millimetres long, 5 mm. broad, and shows a row ofgranules on the left lateral keel. The second is 5 mm. long and4 mm. broad. The third and fourth segments are 6*5 mm. longby 4 mm. in breadth respectively. The fifth segment
. The Quarterly journal of the Geological Society of London. 2. 3. 1 = First segment of post-abdomen. 2 = Third segment of post-abdomen. 3 = Sixth and seventh segments of pre-abdomen. The post-abdomen lies sideways, with the right side upper-most. The dorsal and lateral keels are well marked on the firstfour segments. Nearly all the segments seen are flattened. Thefirst is 5 millimetres long, 5 mm. broad, and shows a row ofgranules on the left lateral keel. The second is 5 mm. long and4 mm. broad. The third and fourth segments are 6*5 mm. longby 4 mm. in breadth respectively. The fifth segment is only partlypreserved, but may reasonably be inferred to have resembled thefourth. The tail-spine or sting is absent. The following are some of the measurements of the specimen :— Millimetres. Greatest length of cepbalothorax 10 Greatest breadth of cephalothorax 10 Total length of pre-abdomen 26 Greatest breadth of pre-abdomen 12 Total length of post-abdomen preserved 27 Length of chela of second appendage 18 Greatest width of chela of same 4 III. Com
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
