FROM THE WHITE CHALK. 125 



" Spines of three kinds ; those adhering to the plates minute and striated ; fragments of 

 larger spines (not certainly belonging to the species) striated, annulated, and furnished 

 with a prominent collar to the articular end (fig. 4) ; the third kind minute, clavate, and 

 truncate, articulated to a slender stalk " (fig. 5). 



EcHiNOTHURiA FLORis, Woodwcml} — PI. XXIX B, figs. 3 — 5. 



EcHiNOTHURiA FLORIS, Woodward. 'Geologist,' vol. vi, pp. 327 — 330, 1863. 



" The fossils represented " in PI. XXIX b " are probably only fragments of the original 

 structure, and possibly only the smaller and less essential portions of the whole. Never- 

 theless, I have determined to publish some account of them, although at the risk of 

 committing an extravagant error, as a last resort towards obtaining more complete ex- 

 amples or suggestions for their more correct interpretation. 



" Both specimens have been presented to the British Museum ; one by J. Wickham 

 Flower, Esq., of Park Hill, Croydon, the other by the Rev. Norman Glass, of London. 



" The first example was obtained, at least sixteen years ago, from the Upper Chalk of 

 Higham, near Rochester, and was submitted to Professor E. Forbes, in whose custody it 

 remained for several years. It was originally shown to me in connection with the 

 anomalous Cirripede Loricida, then newly discovered by Mr. Wetherell. The resemblance 

 between them is certainly curious ; but there is no real relationship. Mr. Flower's fossil 

 exhibits distinct traces of the crystalline structure peculiar to petrified Echinodermata, 

 and the pairs of pores in the ambulacral plates are equally characteristic of the Echinidse. 

 Mr. Darwin also has examined this fossil and rejected it from his province of inquiry. 



" Professor Forbes could not make up his mind to describe the specimen, and ulti- 

 mately it was returned to Mr. Flower, with whom it remained until the publication of a 

 note on the genus Profo-echinus, by Major Thomas Austin, in the ' Geologist' for 18G0 

 (vol. iii, p. 44G), when it was entrusted to me for the purpose of considering whether it 

 had any special affinity with this new type, and for description in the same journal. 



" The Proto-ecMniis was obtained from the Carboniferous Limestone of Hook Head, 

 Wexford, and is but a fragment of a single ambulacrum, consisting of three series of 

 plates at the wider end and two at the other extremity, with apparently a single terminal 



' ' On Echinothuria Jloris, a new and anomalous Echinoderm from the Chalk of Kent.' By S. P. 

 Woodward, F.G.S. I have printed tliis paper from the ' Geologist ' entire (altering the references to 

 figures), as a contribution to British Echinology by my late esteemed friend. Dr. Woodward took so 

 warm an interest in my work, and aiTorded me such valuable assistance, by the loan of specimens for 

 fig;uring, that it affords me very great pleasure to acknowledge here his uniform kindness, and connect 

 his name with a Monograph to which be contributed important aid. 



