1872.] HICKS — TEEMAD0C BOCKS. 51 



Oethoceeas, sp. PI. III. fig. 27. 



The only speciihen found is not sufficiently perfect to warrant 

 a description, or the giving of a specific name. 

 Loc. Tremanhire near Solva, and St. David's. 



Palasteeina eamseyensis, spec. nov. PL IV. figs. 21-23. 



This interesting species, the earliest starfish yet discovered in 

 this country, was found by Mr. Lightbody of Ludlow, during our 

 recent researches at Ramsey Island *. An inch in diameter ; rays 

 five, acute at the extremities, and enlarging gradually to about a 

 fourth of an inch in width near the disk. Ambulacral grooves narrow, 

 and bordered on each side by three rows of plates. The plates are 

 closely fitted together, strongly raised ; and the outer ones support 

 some tolerably strong spines. The disk comprises about a third of 

 the width, and is furnished throughout with strong plates. The 

 specimens are much distorted ; but they show the upper and under 

 surfaces, and enable us to distinguish the most important characters. 

 The length of the rays, the spines along the rays, and the compara- 

 tively narrow disk prove it to be distinct from any species hitherto 

 published. 



Loc. Ramsey Island and St. David's. 



Dendeoceestus cambeiensis, spec. nov. PL IV. figs. 17-20. 



This species occurs moderately plentifully, but the specimens 

 hitherto found are rather imperfect. I have referred it to the genus 

 Dendrocrinus, as it appears to approach nearer to that than to any 

 other genus. 



Cup small, but rather wide at the base. Arms very long and 

 many times subdivided, with a considerable distance placed between 

 each bifurcation. The column pentagonal throughout, with strongly 

 raised rounded edges, and enlarging gradually up to the base of the 

 cup. Joints thin, but rather irregular in thickness. 



Loc. Ramsey Island and St. David's. 



EXPLANATION OF PLATES III.-V. 



(Illustrative of Fossils from the Tremadoc Eocks of St. David's.) 



Plate III. 



Fig. 1. Neseuretus elongatus, gen. et spec. nov. From Ramsey Island and St 

 " David's (collection of Mr. Lightbody). 



2, 3. . From Tremanhire, St. David's (the author's collection). 



4. — — , var. obesus. Ramsey Island (ditto). 



5, 6. recurvatus, spec. nov. Ramsey Island and Tremanhire (ditto). 



7-10. rammycnsis, spec. nov. Ditto (in Mr. Homfray's and the author's 



collections). 



11-13. ■ quadratics, spec. nov. Ramsey Island (ditto). 



14, 15. ■ — — , free cheeks. Ditto (the author's collection). 

 16. ramseyensis, body and tail of. Ditto (ditto). 



* Dr. Otto Torell and Mr. Linnarson had described forms of starfish which 

 had been found in Sweden, in rocks supposed to be of the age of the Harlech 

 group of Great Britain. 



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