. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Fig. 1. A valve in which the posterior end has been destroyed; anterior to the ridge from the umbo is a furrow caused by pressure. It is quite distinct from the ridge. Fig. 2. Another valve, with the rounded posterior end somewhat defi- cient ; the same fold occurs here. The figures are magnified to about eight times the natural size. The specimens are contained in the (ieological-Survey-of-lScotland collection. Obs. Exclusive of the single ridge existing in the present specie
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Fig. 1. A valve in which the posterior end has been destroyed; anterior to the ridge from the umbo is a furrow caused by pressure. It is quite distinct from the ridge. Fig. 2. Another valve, with the rounded posterior end somewhat defi- cient ; the same fold occurs here. The figures are magnified to about eight times the natural size. The specimens are contained in the (ieological-Survey-of-lScotland collection. Obs. Exclusive of the single ridge existing in the present species, it has much less angularity of outline than L. Lei'di/t\ Lea, and somewhat less than L. tricarinata, M. & W., and in this respect corresponds more closely with L. wettinemis. It is longer than L. Bmitschiana. Form, and Loc. Shore of the Firth of Forth at Grantou Quarry, near Edinburgh, in a fine-grained shale of the Wardie- Shale group, Lower Carboniferous or Calciferous-Sandstone series. Collection of the Geological Survey of Scotland. Collector. Mr. James Bennie. I have to express my thanks to Prof. A. Geikie, , for permission to make use of the specimens, and to Prof. T. Rupert Jones, , for material assistance in working out the form here described. Ann. d- Mag. X. Hist. Ser. 5. Vol. iii. 18. 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
