494 PROF. F. J. BELL ON THE GENUS ASTERIAS- [May 3, 



referred to by the numbers i., ii., iii. in brackets after his name ; and 

 these numbers refer respectively to : — 



(i.) " On new Genera and Species of Starfishes of the Family 

 Pycnopodidse {Asteraeanthion, Miiller and Troschel)." Proc. Boston 

 Soc. of Nat. Hist. viii. pp. 261-273. 



(ii.) " Synopsis of the Marine Invertebrata of Grand Manan." 

 1853, Smithsonian Contributions. 



(iii.) " Crustacea and Echinodermata of the Pacific Shores of 

 North America." Boston Journ. Nat. Hist. vi. (1857). 



The papers of Dr. Liitken to which references are made are con- 

 tained in the ' Videnskabelige Meddelelser ' (Copenhagen) for various 

 years, which are distinguished by their respective dates. 



So, too, the papers of Philippi which appeared in Wiegmann's 

 ' Archiv fiir Naturgeschichte ' are distinguished from one another 

 by the year of their publication. 



In the case of Dr. Gray, reference is made to his beautifully 

 illustrated 'Synopsis of the Species of Starfish in the British Museum' 

 (1866). 



And, finally, when p. and a number follow alone the name of 

 Perrier, reference is made to the already mentioned ' Revision,' and 

 to the pagination of it as a separate publication. 



In other cases the references given are so full as to need no 

 explanation. 



The letters B.M. are placed against the names of the species 

 specimens of which are in the British Museum. 



I. List of the Species o/Asterias now regarded as distinct. 



1. acervata, Stimpson (i.), p. 271- 



2. acutispina, Stimpson (i.), p. 262. 



3. (Bqualis, Stimpson (i.), p. 273. 



4. africana, M. Tr. p. 15. (B.M.) 



5. alba, Bell, P. Z. S. 1881. p. 92. (B.M.) 



6. amureiisis, Liitken (1871), p. 296. (B.M.) 



7. a«^a?Wzco, Liitken (1856), p. 105. (B.M.) 



8. bootes, Miiller and Troschel, p. 17. 



9. borbonica, Perrier, p. 61. 



10. brachiata, Perrier, p. 65. 



11. brandti. Bell, P. Z. S. 1881, p. 91. (B.M.) 



12. brevispina, Stimpson (ii.), p. 88. 



13. calamaria, Gray, p. 1. (B.M.) 



14. camschatica, Brandt, Prod. p. 70. 



15. capensis, Perrier, p. 73. (B.M.) 



16. capitata, Stimpson (i.), p. 264. 



17. clavatum, Philippi, 1870, p. 269. 



18. compta, Stimpson (i.), p. 270. 



19. conferta, Stimpson (i.), p. 263. 



20. cribraria, Stimpson (i.), p. 270. (B.M.) 



^ And also published in the Eec. des Actes de I'Acad. Imp. de St. Petersbourg 

 for 1834. 



