Boone, Echinodermata, Cruise of "Alva," 1931 15 



Page Plate 



Order Diadematoida 251 



Suborder Aulodonta 251 



Family Centrechinidae 251 



Genus Echinothrix 251 



calamaris 252 85,86 



diadema 251 83, 84 



Suborder Camarodonta 253 



Family Temnopleuridae 253 



Genus Temnopleurus 253 



toreumaticus 253 87,88 



Family Echinidae 254 



Genus Tripneustes 254 



gratilla 254 89,90 



Family Echinometridae 256 



Genus Parasalenia 256 



gratiosa 256 91, 92 



Genus Echinometra 257 



mathaei 257 93,94 



Genus Heterocentrotus 258 



trigonarius 258 95, 96 



