312 



COMPARA TI VE ANA ToMY 



CHAP. 



Fig. 259.— a, Cystoblastus Leuchtenbergi. 

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

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

 the oral side (after Volborth). 4, Mouth ; 5, 

 ambulacrum. Fig. 295, p. 332, shows the apical 

 side. 



Fig. 25S.— Antedon inclsa (after P. H. 

 Carpenter), l, Aims; 2, cirri. 



Fig. 260.— Protocrinus oviformis, Eichwald 

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

 ainbulacruni. 



