. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. ECIIINODERMATA. J^g No. 891. Actinocrinus uinbrosus, Hail. Another variety; same formation and locality. Price $0 20 No. 892. Actinocrinus verrucosus, Hall. From the same formation and locality as the preceding. Price, $ No. 893. Agaricocrinus tuberosus, Troost. This generic name was proposed by Dr. Troost in 1850, for certain mushroom- shaped Crinoids, which, in the number and arrangement of the body-plates, present considerable analogy with Actinocrinus.
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. ECIIINODERMATA. J^g No. 891. Actinocrinus uinbrosus, Hail. Another variety; same formation and locality. Price $0 20 No. 892. Actinocrinus verrucosus, Hall. From the same formation and locality as the preceding. Price, $ No. 893. Agaricocrinus tuberosus, Troost. This generic name was proposed by Dr. Troost in 1850, for certain mushroom- shaped Crinoids, which, in the number and arrangement of the body-plates, present considerable analogy with Actinocrinus. The typical species is A. Amer- icanus, Roemer, with which this is identical. From the Keokuk limestone (Car- boniferous), Warsaw, HI. Price, $ No. 894. Agaricocrinus Whitneldi, Hall. From the same locality as the preceding. Price, $ No. 895. Agaricocrinus "Wortheni, Hall. With arms free. From the same locality as the preceding. Price, $ No. 896. Agelocrinus Kaskaskiensis, Hall. This generic name was given by Vanuxem to include star-like Crinoids " clustering together so as to form one ; It is now known that they are Cystideans of a very remarkable type, being destitute of a stem. The general form of the calyx is hemispherical. This specimen is from the Chester lime- stone (Carboniferous), Kaskaskia, 111. Price, $ No. 897. Ancyrocrinus spinosus, Hall. The Crinoids of this genus were probably free when adult. They have the form of a bulb or thickened column, with lateral ascending processes and a cen- tral ascending column. This specimen is from the limestone of the Upper Hel- derberg (Devonian), Falls of the Ohio. Price, $ No. 898. Apiocrinus Parkinsoni, Schloth. Two bodies and two stems branching from one root; young. The " Pear-encrinites " have a complicated, expanded root, a long column composed of numerous ossicles, and a pyriform receptacle, with arms well devel- oped and regularly bifid. In this species, the stem
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
