350 REPORT—1885. 
is fluted; the stylet flat, except its marginal rims. The two segments are 
neatly ornamented with imbricate lozenge-shaped or sharp leaf-like lines, 
each angle inclosing a smaller leaf-like lattice-work, as in Barrande’s 
C. Scharyi. This is in the Lower-Ludlow olive-grey laminated mud-— 
stone from near Ludlow with an Orthoceras. ‘ 
Another in the same Coll. (H), from the same series, consists of four 
segments (35 mm., the ultimate being 15 mm.), with style (82 mm.) and : 
a stylet (18 mm.). These spines are ensiform and broad; the stylet flat 
with edge-rims, the style ridged and pitted (= spinose, two lines visible). 
The segments are ornamented as in specimen A, but with a smaller 
pattern, and the penultimate and two higher segments have lateral 
oblique lines coming down from the angular lines which covered the 
back. 
Two other specimens in the same Collection, from the Upper (?) Ludlow, 
correspond more closely with M‘Coy’s specimens, being short trifid sets 
of broad spines—one (T) with a style 28 mm. long and stylets each 
15 mm., the other (S) having style 23 mm. and stylets 13 mm. In 
both the stylets are smooth with slight marginal rims, and the style is 
faintly fluted and pitted (= spinose), in T definitely along two rows, 
one near each margin. 
Var. longa. 
Specimen Ludlow Museum M. is a broad and much longer telson (at 
least 75 mm. long), with linear ornament, from the Lower Ludlow at Bow 
Bridge, Ludlow. A small part of a slightly curved ensiform stylet shows 
from beneath it. This may be either a variety of C. robusta, or possibly 
a distinct species. 
14, CERATIOCARIS, sp. nov. ? 
In Owens College Museum, Manchester, is a very delicate litile set 
of caudal appendages. The style (central) shows a circular section at its 
base (top), about 2 mm. wide, is 12 mm. long, and tapers gently to a sharp 
point. The lateral stylets are 8 mm.each. All are delicately ridged and 
fluted. From the Lower-Ludlow or Aymestry Limestone, on the old road 
at Mocktree ; collected by the late Mr. Lightbody. 
Mus. Pract. Geol. p 7? (‘ Catal. C. S. Foss.’ 1878, p. 118), from the 
Lower Ludlow at Leintwardine, is a somewhat similar little set of 
appendages (three spines). The middle one is the longest, 8 mm., the 
others 6 mm. ; 
These may belong to a very young condition of some of the species 
above mentioned, or possibly to a distinct species. 
In the British Museum one of those marked ‘58878’ from Linburn, 
near Muirkirk, shows a style (21 mm.), tapering, with circular section at 
base, and apparently smooth, together with a corresponding attached — 
stylet, 16 mm. long. Were these not smooth, they might be referred to 
the same species as the foregoing smaller specimens. This set differs from 
the appendages of either 0. papilio or C. stygia. 
15. CERATIOCARIS DECORA, Phillips. A 
1848. Onchus decorus, Phillips, Mem. Geol. Surv.’ vol. ii. part 1, p. 226, pl. 30, figs. 
5, 5a. P. 
1867. Ceratiocaris decorus, Salter. In ‘Siluria,’ 3rd (4th) edit. p. 516. : 
1877. 95 A H. Woodward. ‘Cat. Brit. Foss, Crust.’ p. 70. on 
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