62 PROF. F. J. BELL ON THE [Feb. 19, 



5. carinntiis, M. Tr. p. 49. 



6. chinensis, M. Tr. p. 46. B.M. 



7. dorsatus, M. Tr. p. 49 (s. v. clavatus). B.M. 



8. forcipulnsus, Liitk., 1864, p. I. 56. 



9. gracilis, Liitk., 1871, p. 260. B.M. 



10. granulosus, Perr. p. 236. B.M. 



11. hedefnanni, Liitk., 1871, p. 255. 



12. hiulcus, M. tr. p. 48. 



13. lincki, Liitk., 1864, p. 156. B.M. 



14. mammillatus, M. Tr. p. 48. B.M. 



15. nodosus, M. Tr. p. 47 (s. v. turritus). B.M. 



16. nodosus (Gray), Ann. N. H. (1), vi. p. 277. B.M. 



17. nodulosus, Perr. p. I'M. B.M. 



18. occidentalis, Verrill, Trans. Conn. Acad. I. ii. p. 278. B.M. 



19. orientalis, M. Tr. p. 128. B.M. 



20. regulus, M. Tr. p. 51. 



21. reinhardti, Liitk., 1864, p. 160. 



22. reticulars, M. Tr. p. 45. B.M. 



23. superbus, Mobius, Abh. Geb. Naturw. Hamburg, iv. 2. p. 3. 



24. tubercutatus. M. Tr. p. 46. 



25. vahulatus, M. Tr., Arcb. f. Nat. 1S43, p. 115. 



26. verrucosus, M. Tr. p. 49. 



27. westermanni, Liitk., 1871, p. 257. 



II. List of the more important Synonyms. 



1. acnleatus, M. Tr. p. r>0 = reticulatus. 



2. clavatus, M. Tr. p. 49 = dorsatus. 



3. clouei, Perrier, Ann. Sc. Nat. (v.), xii. p. 27 '1 = nodosus 1 . 



4. franklini, Gray, Ann. N. H. vi. p, 277 — nodosus. 



5. gigas, Linnaeus, Mus. Tessin. p. 1 \4 = reticulatus. 



6. lapidarius, Grube, Arch. f. Nat. 1857, p. 342 = reticulafvs. 



7. mammosus, Perrier, Ann. Sc. Nat. (5) xii. p. 270 = nodosus. 



8. michelini, Perrier, Rev. Stel. p. 2o2=armafus. 



9. muricatus, Gray, Ann. N. H. vi. p. 277 = Uncki. 



10. nodosus, Gray, ibid. p. 277 =grayi (Bell). 



11. obtusangulus, M. Tr. p. 5l = Goniaster obtusangulus. 



12. sebce, De Blainville, Man. d'Actinol. p. 238=reticulatus. 



13. turritus, M. Tr. p. 47 = nodosus. 



It will, I think, be found on examination that Oreaster regulus, 

 M. Tr. = 0. dorsatus ; that O. verrucosus, M. Tr., stands very near 

 O. nodosus; and that O. tubercutatus, M. Tr., is at most a varietal 

 form of O. mammillatus. 



Limits of the Genus. — It will be seen that I here include the 

 species to which Dr. Gray gave the name of armatus, and for which 

 he proposed the generic term Nidorellia. With JSidorellia Prof. 

 Perrier has associated the form to which Dr. Gray gave the pecu- 

 liarly inelegant appellation of Paulia horrida ; and it has therefore 



1 Prof. Perrier's decision as communicated to me bv letter. 



