I'LATE Vc. 



Thu LuttcriuL' is thu same in all the Figures. 



Figs. 1-3. HoLOPUs KANGi, cl'Orbigny. 



Diam. 



Fig. 1. Portion of ;iu oblique sectiou through au arm-joiut aud the 



base of a pinnule, . . . . . . x 30 



Fig. 2. Transverse sectiou of an arm-joiut with attached pinnule, . x 30 



Fig. 3. Portion of a nearly longitudinal section of a pinnule, . . x 35 



Page 



210 

 210 

 209 



Figs. 4-10. Hyocrinus bethellianus, Wyv. Thorns. 



Fig. 4. Terminal face of a stem-joint, .... 



Fig. 5. Optical section of a piece of stem cut longitudinally, . 



Fig. 6. Portion of the disk, showing one oral plate and the anambu- 

 lacral plates lying outside it, . 



Fig. 7. Transverse section (jf a pinnule, .... 



Fig. 8. Terminal portion of a pinnule, mounted in dammar and seen 

 in o^Dtical section, ...... 



Fig. 9. Portion of a dry pinnule about the end of the enlargement to 

 receive the genital gland, ..... 



Fig. 10. Lower portion of a pinnule, mounted in dammar and seen in 

 optical section, ...... 



X 15 



X 12 



16 



220 



220 



220 



