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58 BRITISH PALAEOZOIC FOSSILS. [EcIIINODERM AT A. Eucalyptrocrinus decorus (Pkill. Sp.) Ref. and Syn Hypanthocrinites decorus (Phill.) Sil. Syst. t. 17. f. 3. tip. Ch.—1st primary radials rather more than one-fourth wider than long, 2nd primary radials one- third wider than long; 3rd primary radials (or scapulae) hexagonal, each supporting on its truncated apex an ovate interbrachial plate, nearly twice as long as the scapula; from the two upper sides of the scapula, or cuneiform primary radial, proceed two rows of secondary radials (or arms) of two or three joints, the first of which is much the largest; from the last of which proceed two rows of tertiary radials (or hands) of three or four joints, each hand terminating in one thick finger, of two rows of cuneiform joints; on each large 1st interradial plate rest two semi-elliptical 2nd interradial plates, together about equalling the inter- brachial plate in size; from each of these pairs and from each of the interbrachial plates, a thick smooth club- shaped ridge runs nearly to the ends of the fingers, followed towards the mouth by a large ovate tubercle; capital plates very gibbous. Length from pelvis to base of mouth, two inches four lines; width of cup, one inch one line; length of fingers, one inch two lines. Position and Locality.—Wenlock limestone, Dudley, Staffordshire. Eucalyptrocrinus polydactylus (M c Coy). PI. 1. D. fig. 2. Ref.—M c Coy, Ann. Nat. Hist. 2nd Series, Vol. II. p. 249. Sp. Ch.—(The small concave pelvis not seen) ; 1st primary radials hexagonal, convex, one-third wider than long, each supporting a quadrangular 2nd primary radial nearly twice as wide as long, its width nearly one-third less than that of the 1st primary radial; on each 2nd primary radial rests a pen tagonal 3rd primary radial (or scapular) joint, equalling the second ditto in width, but exceeding it in depth; on each cuneiform primary radial or scapula rests two hexagonal 1st secondary radials or arm- joints, nearly equalling the scapula; in width and depth, and joining by their inner margins (so that the interbrachial plates cannot rest on the scapulae) ; on each of these rests a smaller hexagonal 2nd second ary radial, from each of which arise two rows of tertiary radials, or hands, bearing four or five fingers each; between the two 2nd secondary radials or arm-joints of each arm is a small heptagonal interbrachial plate, its inferior pointed end resting on the two 1st ditto, and its truncated upper end supporting the usual small lozenge-shaped plate (second interbrachial) peculiar to this genus; circumscribed by all the primary radials and 1st secondary radials, are the five large, equal, convex, nine-sided interradial plates, each supporting on its upper edge a vertical row of three 2nd, 3rd, and 4th hexagonal interradial plates. Diameter of cup about one and quarter inch. Besides the minor differences of proportion in the various plates which may be gathered from the description, this differs from the Hypantliocrinus (Eucalyptrocrinus) decorus (Phill.) and E. rosaceus (Gold.) in the lateral union of the 1st arm-joints or secondary radials, and their supporting the interbrachial plates, instead of the cuneiform primary radial or scapula, the scapulse consequently being pointed above; also in the plates resting on the interradials, not being bifid, and most remarkably from all of the genus in the number of fingers, there being but one to each hand in the other species. I have only seen a cast, and am not certain whether the fingers have one or two rows of joints. Position and Locality.—Rare in the Wenlock limestone of Dudley, Staffordshire. Explanation of Figure.—PI. 1. D. fig. 2. Natural size from Dudley. 4tll Orel. ASTEBIiE. Body divided into five or more hollow, simple, ray-like, lobes, containing the viscera, and grooved on the under side for ambulacra, or rows of suckers, for locomotion. One of the rays (considered the anterior) has opposite to it, in the space between the bases of two rays at the dorsal aspect, a peculiar porous