. Catalogue of the Blastoidea in the Geological Department of the British Museum (Natural History) : with an account of the morphology and systematic positionof the group, and a revision of the genera and species. British Museum (Natural History). Dept. of Geology; Blastoidea. Diagrams of Troostocrinus Reinwardti. A. The anal side. B. Summit view. The radio-deltoid sutures are shown by rather darker lines. It may be well for us to state here that acting upon information supplied to us by Mr. Wachsmuth since pages 36 & 37 were printed, and also by his desire, we have decided to restrict the
. Catalogue of the Blastoidea in the Geological Department of the British Museum (Natural History) : with an account of the morphology and systematic positionof the group, and a revision of the genera and species. British Museum (Natural History). Dept. of Geology; Blastoidea. Diagrams of Troostocrinus Reinwardti. A. The anal side. B. Summit view. The radio-deltoid sutures are shown by rather darker lines. It may be well for us to state here that acting upon information supplied to us by Mr. Wachsmuth since pages 36 & 37 were printed, and also by his desire, we have decided to restrict the generic name Troostocrinus to T. Reinwardti, which has the anal deltoid visible externally and a single anal spiracle (Fig. VII.); while we propose to take Pentremites lineatus, Shumard, as the type of a new genus Meta- blastus which has all its deltoids alike and the two posterior spiracles distinct from the anus (PI. III. figs. 14, 15).. 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 British Museum (Natural History). Dept. of Geology; Etheridge, Robert, 1846-1920; Carpenter, P. Herbert (Philip Herbert), 1852-1891. London : Printed by order of the Trustees
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