REPORT ON THE ECHINOIDEA, 281 



Salenia hastigera, A. Ag. (figs. 3-17), p. 54. 

 Fig. 3. Abactinal view of specimen of Salenia hastigera, measuring 14 mm. in diameter. 



,, 4. The same species seen in profile, denuded of spines, 13 mm. in diameter. 



„ 5. The same seen from the actinal side, denuded. 



„ 6. The same from the abactinal side. 



7. Magnified portion of the test of same facing the median ambulacral space. 



,, 8. Magnified portion of the test of same facing the median interambulacral space. 



,, 9. Magnified portion of actinal edge of test of same. 



,, 10. Abactinal system of same. 



„ 11. Still further magnified portion of the ambulacral plates, and of the adjoining 

 primary interambulacral plate of same. 



„ 12. Young specimen, measuring 9 mm. in diameter, seen from the abactinal side. 



„ 13. The same as fig. 12, seen from the actinal side. 



„ 14. Magnified portion of test of same as fig. 12, facing the median ambulacral space. 



„ 15. Magnified portion of test of same, facing the median interambulacral space. 



,, 16. Magnified portion of abactinal system, showing madreporic body of fig. 10. 



„ 16 a. Magnified portion of abactinal system, showing the rudimentary spines cover- 

 ing the genital and ocular plates. 



„ 17. Magnified portion of primary spine of Salenia hastigera. 



,, 17 a, b. Jaws of Salenia hastigera with the teeth, as seen in profile and from the 

 outside b. 



PLATE V. 



Cceloi^letirus maillardi, Mich. (figs. 1-3), p. 60. 



Fig. 1. Large specimen (n. s.) with radioles, coloured light brown at base, and with shoe 



of uniform tint to extremity. 

 ,, 2. The same seen from the actinal side, to show the spathiform shoe of the radioles, 



characteristic of the Arbaciadse. 

 „ 3. A smaller specimen, with the shoe of the radioles brilliantly banded with 



Vermillion. 



PLATE VL 



Ccelopleurus maillardi, Mich. (figs. 1-22), p. 60. 



Fig. 1. Denuded test (n. s.) seen in profile. 

 ,, 2. The same seen from the abactinal side. 

 „ 3. The same seen from the actinal side. 



(ZOOU CHALL. EXP. — PAET IX. — 1881.) I 36 



