ADDENDA 



SCATTER DIAGRAM (See page 619) 



-C 



u 



an 



456 8 9 10 



LengtK of P In mm. 



DIAGRAM SHOWING RELATIVE PROPORTIONS of the first two pinnules in some of the species of hometra: 

 hordea (H), graminta (G), vivipara (V), johanni (J), and flavtscen; (F). The specimen of tvivipara 

 from Bransfield Strait is represented by X. The diagonal indicates where the two pinnules would 

 be equal in length. (See p. 619.) 



Since this monograph was set in type, the following additional references dealing 

 with crinoid species coming within the scope of this final part of volume 1 of the mono- 

 graph have come to light. The arrangement is chronological. 



1956. DIRECTION 42. Internat. Comm. Zool. Nom. 



Antedon, p. 161 (name usually treated as feminine, which gender is recom- 

 mended to the Commission). 



1957. DIRECTION 73. Internat. Comm. Zool. Nom. 



Antedon, p. 209 (placed on Official List of Generic Names). 

 Antedon bifida, p. 200 (original combination Asterias bifida, a senior synonym 

 of Antedon gorgonia and placed on Official List of Specific Names). 



835 



