. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. CRUSTACEA. 101. No. 398. Ceraurus pleurexanthemus, Green. This genus is closely allied to the Acidas- pis of Murchison. In this species the buckler is crescent form ; the eyes small, distant, and granulated ; the glabella deeply farrowed on each side; the thorax has eleven articulations, and the caudal shield four. This specimen is a restoration by adjustment of fragments from different individuals discovered in the Trenton Limestone and Hudson River Group (Low
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. CRUSTACEA. 101. No. 398. Ceraurus pleurexanthemus, Green. This genus is closely allied to the Acidas- pis of Murchison. In this species the buckler is crescent form ; the eyes small, distant, and granulated ; the glabella deeply farrowed on each side; the thorax has eleven articulations, and the caudal shield four. This specimen is a restoration by adjustment of fragments from different individuals discovered in the Trenton Limestone and Hudson River Group (Lower Silurian). Price, $ No. 899. Ceraurus pleurexanthemus, Green. This specimen, showing the hypostoma on the lower side, was found in the Trenton Limestone (Lower Silurian) near Ottawa River, Canada. Price, $ No 400. Chirurus Claviger, Beyrich. Two specimens. These loosely built Trilobites resemble Phacops. The number of body-rings is eleven. The fragments of this species were discovered in the Lower Silurian at Wesela, Bohemia. Original of the glabella in the Ward Museum of the University of Rochester. Price, $ No. 401. Conocephalus Sulzeri, Schioth. This Trilobite has a cephalic shield not unlike a half-moon, very small eyes, a glabella separated by deep furrows from the lateral lobes, and fourteen joints. The specimen is from the Lower Silurian at Ginetz, Bohemia. Price, § No. 402. Cychaspis Chrystyi, Hall. This Trilobite was found in the Niagara Group (Upper Silurian) at Waldron, Indiana. Price, $ No. 403. Dalmania ( Cryphaeus) Boothii, Green. This genus is distinguished by an ovate oblong body, convex and trilobed ; a buckler with two reticulated tubercles ; aad a long, lobate tail. The head and upper part of the body closely resemble those of Calymene. This specimen is from the Devonian at Huntingdon, Pennsylvania. Price, $ No. 404. Dalmania ( Cryphaeus) Boothii, Green. Showing the under-side of the tail. From the Hamilton Group (Devonian),
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
