98 



U.S. NATIONAL MUSEUM BULLETIN 264 



Salmacopsis, 72 

 Scaphechinus, 72 

 Schizaster, 72 

 Schizocidaris, 74 

 scotiopremus, Nudechinus, 52 

 scrippsae, Salenia, 71 

 sculpta, Podocidaris, 61 

 sculptum, Temnotrema, 87 

 sculptus, Prionechinus, 65 

 scutata, Podocidaris, 



Habrocidaris, 62 

 setigera, Echinocrepis, 



Cystocrepis, 24 

 sharreri, Porocidaris, 



Histocidaris, 62 

 siamensis, Pleurechinus, 



Temnotrema, 61 

 sigsbei, Phormosoma, 57 

 sigsbei, Conoclypus, 



Conolampas, 19 

 similis, Brissopsis, 10 

 solidum, Laganum, 44 

 Spatagocystis, 74 

 spatangoides, Macropneustes, 



Plethotaenia, 48 

 Spatangus, 74 

 speciosus, Clypeaster, 17 

 spectabilis, Palaeopneustes, 

 Linopneustes, 53 

 Plexechinus, 61 

 Sperosoma, 76 

 Sphaerechinus, 77 

 squamosa, Stereocidaris, 81 

 stenopora, Heliocidaris, 



Echinometra, 39 

 Stephanocidaris, 77 

 Sterechinus, 29 

 Stereocidaris, 79 

 sternalis, Metalia, 89 

 sternopetala, Echinolampas, 



Planilampas, 26 

 stictus, Nudechinus, 52 

 stimpsoni, Colobocentrotus, 18 

 Stolonoclypus, 81 



strigata, Laganum, Peronella, 44 

 Strongylocentrotus, 82 

 stygia, Moira, 51 

 stylifera, Stereocidaris, 81 

 Stylocidaris, 84 

 subconicus, Echinocyamus 

 scaber, 26 



tanneri, Pourtalesia, 64 



Temnopleurus, 86 



Temnotrema, 60 



tenuis, Arachnoides, 4 



Mellita quinquesperforata, 50 

 Periaster, Hemiaster, 55 

 Phormosoma, Tromikosoma, 58 



tenuispina, Goniocidaris, 36 



tenuispinus, Centrostephanus, 12 



thetidis, Asthenosoma, 

 Araeosoma, 8 



thomasii, Phyllacanthus, 

 Actinocidaris, 59 



thomsoni, Palaeotropus, 54 



Thrichodiadema, 87 



tonsum, Aspidodiadema, 7 



townsendi, Eobrissus, Metalia, 32 

 Schizaster, Brisaster, 73 



Toxobrissus, 87 



Toxocidaris, 87 



Toxopneustes, 88 



Tretocidaris, 88 



Trigonocidaris, 88 



triplopora, Rhynchocidaris, 68 



triseriatus, Amblypneustes, 3 



tristichum, Sperosoma, 77 



Tromikosoma, 56 



tuberculata, Goniocidaris 

 tenuispina, 36 

 Maretia, 49 



tylodes. Echinus, 29 



tylota, Gonimaretia, 

 Pseudomaretia, 34 



Urechinus, 89 



