MONOGKAPH OF THE EXISTING CBINOIDS. 759 



PLATE 6. 

 Ann structure of comatulids. 



FIG. 1015. Dorsal view of proximal portion of specimen of Comanthus parvicirra, with homolo- 



gies of ossieU-s Indicated. (Adapted from P. H. Carpenter.) 



1016. Lateral view of proximal portion of specimen of Pentametrocrinus item-peri, with 

 homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



PLATE 7. 

 Arm structure of comatulids. 



FIG. 1017. Central portion of specimen of Comanthus parvicirra in dorsal view, with atrophied 



left posterior arm. (After P. H. Carpenter.) 



1018. Central portion and part of an arm of type specimen of Antedon diibenii in dorsal 

 view, with homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



PLATE 8. 

 Ann structure of comatulids. 



Kio. 1019. Central portion and part of arm of Comactinia meridionalis in dorsal view, with 



homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



1020. Central portion and part of two arms of specimen of Comatula rotalaria, with 

 homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



PLATE 9. 

 Arm structure of comatulids. 



Fio. 1021. Dorsal view of proximal portion of specimen of Comantheria briareus, with homolo- 

 gies of ossicles indicated. (Adapted from P. H. Carpenter.) 



1022. Dorsal view of proximal portion of specimen of Capillaster multiradiata, with 

 homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



1023. Dorsal view of proximal portion of two post-radial series of Comaster novceguinete, 

 with homologies of ossicles indicated. (Adapted from P. H. Carpenter.) 



PLATE 10. 

 .Irm structure of comatulids. 



FIG. 1024. Dorsal view of proximal portion of specimen of Comanthus trichoptera. with homolo- 

 gies of ossicles indicated. (Adapted from P. H. Carpenter.) 



1025. Dorsal view of proximal portion of specimen of Comanthvs parvicirra, with homolo- 

 gies of ossicles indicated. (Adapted from P. H. Carpenter.) 



1026. Dorsal view of proximal portion of specimen of Capillaster sentosa, with homologies 

 of ossicles indicated. (Adapted from P. H. Carpenter.) 



PLATE 11. 

 Arm structure of comatulids. 



Fio. 1027. Distal arm division in specimen of Dichrometra doderleini. 



102S. Centrodorsal and arms bases of specimen of Psathyrometra Wgradata, showing (to 

 the left) a regenerating arm. (After Hartlaub. 1 



1029. Dorsal view of proximal portion of two post-radial series of specimen of Comaster 

 multibrachiata, with homologies of ossicles indicated. (Adapted from P. H. Car- 

 penter.) 



142140 21 Bui!. 82 50 



