BRITISH FOSSILS. 



4. Cidaris velifera, Bronn. (Name only) Jahrb. 1835. p. 154, Desor, Syn. Ecli. p. 34. 

 t. 6. f. 12. C. Heberti, ib. p. 12. Syn. C. globiceps, Quenst, Petref. p. 577. t. 49. f. 17. 



Of this small species there are three specimens in Mr. Cunningtou's cabinet, one of 

 them with six spines attached. The body measures 6 lines in diameter by 3 in 

 height, and is like C. clavigera of the Upper Chalk ; the spines are globular, mea- 

 suring only 2 lines, with a very short stalk. 



Locality. — Upper Gkeen Sand of Warminster. 



5. Cidaris sceptrifera, Konig. (Dixon's Geol. Sussex, pi. 25. f. 5, 6. best figures.) 

 The spine figured by M. Desor, with the name " C. filamentosa, Ag." Synops. Ech. 



Eoss. t. 5. f. 22., perfectly agrees with the typical specimens of C. sceptrifera ; that figured 

 as C. sceptrifera is more like a large broken spine of C. dissimilis. 



6. Cidaris sulcata, T>YK.on^'M.^. Morris's Cat. 2nd edit. p. 75. Cidaris sceptrifera, vox. 

 spinis truncatis, Eorbes, in Dixon's Geol. Sussex, p. 338. t. 25. f. 32, 33. Cidaris 

 vesiculosa, Miinst. (part.) Copied by Desor, Syn. Ech., pi. 5., f. 24, 25. 



7. Cidaris pier acantha, Ag..^ Dixon, Geol. Sussex, pi. 24. f. 23, 24. What has become 

 of the figured spine is unknown; two rather smaller specimens are in the Dixonian 

 Collection, now in the British Museum. 



8. Cidaris florigemma, Phil. (1829), Geol. Yorks. 1. t. 3. f. 12. Park. Org. Eem. 3. 

 t. 4. f. 15. Cidaris Blumenbachii, Desor, Synopsis, p. 5 (not Miinster). 



This very abundant urchin has been frequently called " C. Blumenbachii ; " Miinster 

 having inadvertently figured its spines (and those of two others) as possibly belonging 

 to the test, upon which he founded his species. The real C. Blumenbachii has not 

 been found in England, unless the larger species obtained at Calne is to be con- 

 sidered a variety of it ; there are fine specimens in the collection of Wm. Smith 

 (Brit. Mus.), and Dr. Wright. M. Desor makes C. crucifera, Ag. the " young " of 

 C. florigemma ; but if not a distinct species it is certainly related to C. coronatn and 

 not to C. florigemma. 



Locality. — Coral Rag. Calne. Wilts. 



S. p. WOODWAFJO). 



March 1856. 



