312 



THE VOYAGE OF H.M.S. CHALLENGER. 



PLATE XLI. 



Figures and Details of Spines (figs. 1-53), p. 14. 



Fig. 1-6. Periaster limicola. 

 „ 7, 8. Aerope rostrata. 



„ 9, 10. Echinolampas oviformis. 



„ 11,12. Eiipatagus valenciennesi. 



„ 13-16. Aceste beUidifera. 



„ 17-20. Maretia jilanulata. 



„ 21, 22. Hemiaster cavernosus. 



„ 23-27. Ci/stechimis wijviUii. 



„ 28, 29. Palceotropus loveni. 



„ 30, 31. Echinocrepis cimeata. 



Fig. 



32-35. Argopatagiis vitreus. 

 36, 37. Ci/stechinus vesica. 

 38, 39, Genicopatcbgus affinis. 

 40. Spatagocystis challengeri. 

 41-43. Cionobrissus revinchis. 

 44-46. Pourtcdesia ceratopyga. 

 47, 48. Pourtcdesia hispida. 

 49-52. Pourtcdesia carinata. 

 53. Pourtalesia laguncula. 



PLATE XLIL 



Fig. 





Pedicellari.e (figs. 1-28). 



1. Dorocidaris bracteata, short, long-stemmed ambulacral pedicellaria. 



2. Goniocidaris florigera, slender-headed, long-stemmed pedicellaria. 



3. ,, ,, globular- headed, short-stemmed abactinal pedicellaria. 



4. Aspidodiadema tonsnm, globular-headed, short-stemmed abactinal pedicellaria. 



5. „ ,, long-headed, long-stemmed pedicellaria. 



6. „ „ magnified part of short interambulacral spines. 



7. Phorniosoma tenue, one of the long-headed, long-stemmed pedicellarise. 



8. Asthenosoma gruhit, globular-headed, short-stemmed pedicellaria. 



9. ,. „ long-headed, long-stemmed pedicellaria. 



10. Spatagocystis chcdlengeri, large-headed pedicellaria (PI. XLV. fig. 39). 



11. „ ., short-headed, toothed, cup-pronged pedicellaria (PI. 

 XLV. fig. 43). 



12. Spatagocystis challengeri, small-based, long-pronged pedicellaria (PI. XLV. 



fig. 12). 



13. Cystechimis ivyvillii, large-headed pedicellaria (PI. XLV. fig. 28). 



14. „ „ extremity of rod supporting same. 



15. Cystechimis clypecdus, small large-headed pedicellaria (PI. XLV. figs. 30, 31). 



16. ,, „ end view of same. 



