Fig. 1. "Part of a fossil lunated star from the chalk of Kent."--_Mr. Parkinson._ (_Goniaster semilunata_, of Parkinson; _Goniaster Parkinsoni_, of Prof. E. Forbes). Remains of Star-fishes are by no means rare in the chalk strata of Kent; in those of Sussex they are far less common. When the "Fossils of the South Downs" was published, in 1822, a few fragments only had been discovered. Of late years, some beautiful examples have been obtained from the chalk-pits near Arundel and Worthing, by Mr. Dixon, Mr. Coombe, Mrs. Smith, of Tunbridge Wells, and other collectors. The cabinet of the Marquess of Northampton is very rich in this class of fossils. Several unique examples of new species have been obtained from the chalk near Maidstone. Fig. 2. "An echinite, from France."--_Mr. Parkinson._ The locality of this fossil is uncertain; no similar specimen is known either to Mr. Morris, or the other eminent palæontologists I have consulted; and the original cannot be discovered. I have reason to believe it was purchased, after Mr. Parkinson's death, together with the greater number of the fossils already described, by an American gentleman, and taken to the United States. Fig. 3. "Part of a stellite or fossil star-fish, resembling _Pentagonaster regularis_."--_Mr. Parkinson._ This well-known chalk species (_Goniaster Mantelli_, of Prof. E. Forbes), occurs frequently in an imperfect state in the quarries near Gravesend. The collection of the Marquess of Northampton contains a perfect and exquisite specimen attached to a flint, from that locality. Fig. 4. A beautiful example of the Turban Echinite (_Cidaris Parkinsoni_, of Dr. Fleming), from Wiltshire. The _Cidaris_, or Turban Echinite, belongs to the family of radiated animals, of which the recent Sea-urchin (_Echinus sphæra_) is a well-known example. The globular shell or envelope of these animals is composed of numerous calcareous polygonal plates, arranged in regular and elegant patterns, like the lines of the meridian on a globe. These plates are externally covered with papillæ of various sizes, to which spines of corresponding magnitude are articulated. In some of the _Cidares_ the principal tubercles are very large, and their spines several inches in length. The number and variety of the animals of this family that occur in a fossil state are so great, that a work expressly devoted to the subject would be required to thoroughly investigate the characters and relations of the known species. An elementary knowledge of this class of fossil remains may be obtained by reference to "Medals of Creation," chap. xi. p. 240.