Stomopneustes variolaris, /. .;/, ,'?Z 



31. Interior of lai^e-heaileJ, long-sterameil iiiteraiiiliuluinil |nilici'llaii;u 

 3^. Interior of prong of a stout, short-stemmed actiiuil iiedicellaiia. 



Echiuothriz calamaris, /. S3 - 30. 



33, 34, 36. Interior views of single prongs of large-headed, long-stemmed interambulacral pedicellaria) 

 of different sixes, ij*. 

 35. Limestone rod of interior of stem. 



Centiostephanus Rodgersii,/. 37, ST. 



37. Tip of prong of large-headed, long-stemmed pedieellaria, ^i. 

 37'. Interior of stout-headed, short-stemmed actinal pedieellaria, ■'^. 



Diadema setosum,/. 3S-39. 



38, 38'. Interior of prong of large-headed, long-stemmed pedieellaria. 



39. Small, short-stemmed actinal pedieellaria. 



Astropyga radiata, /. JfO. 



40. Profile of prong of long-stemmed, large-headed actinal pedieellaria. 



(Unless otherwise mentioiied, all figures are magnified about twenty diameters.) 



i^rilaA 



