312 



COMPARATIVE ANATOMY 



CHAP. 



— * 



Fig. 259.— a, Cystoblastus Leuchtenbergi. 

 1, Interrailial ; 2, 3, radial; 9, basal; 10, infra- 

 basal ; 8, anus ; 6, genital aperture. B, From 

 the oral side (after Volbortll). 4, Jlouth ; 6, 

 ambulacrum. Fig. 295, p. 382, shows the apical 

 side. 





Fig. 2.'.S.— Antedon inclsa (after P. H. 

 Carpenter). 1, Anns; 2, cirri. 





Fig. 260.— Protocrinus ovlformls, Elcliwald 

 (after Volborth). 2, Anus ; 1, third aperture ; 3, 

 ambulacrum. 



