96 



U.S. NATIONAL MUSEUM BULLETIN 264 



notium, Temnotrema, 



Temnopleurus, 86 

 Notocidaris, 52 

 novaezealandiae, Notechinus, 



Pseudechinus, 52 

 nuda, Toxocidaris, 



Strongylocentrotus, 87 

 Nudechinus, 52 

 nudum, Araeosoma owstoni, 5 

 nutriens, Fibularia, 33 

 nutrix, Ctenocidaris, 35 



obesa, Echinarachnius parma, 24 

 obliqua, Brissopsis, 10 

 obovatus, Isopatagus, 42 

 obscurum, Sperosoma, 76 

 obscurus, Gymnopatagus , 



Eupatagus, 37 

 occidentalis, Apatopygus, 4 

 occidentalis, Encope, 31 

 occlusa, Salenocidaris profundi, 70 

 ochrus, Clypeaster, 17 

 oligopora, Salmacis, 



Salmaciella, 71 

 orbicularis, Peronella, 56 

 orbignyanus, Schizaster, 73 

 ornata, Podocidaris, 61 

 ovalis, Eurypatagus, 32 

 ovata, Aceste, 2 

 oviformis, Pycnolampas, 67 



pachistus, Amblyneustes, 3 



Pachycentrotus, 77 



pacificus, Plagiobrissus, 59 

 Pygorhynchus, Cassidulus, 67 

 Toxobrissus, Brissopsis, 87 



Palaeobrissus, 52 



Palaeopneustes, 53 



Palaeotrema, 53 



Palaeotropus, 53 



pallidum, Chaetodiadema, 13 



pallidas, Gymnechinus, 37 



pallidus, Clypeaster, 17 

 Parechinus angulosus, 54 



Spatangus, 75 

 panamense, Phormosoma, 



Tromikosoma, 57 

 panamensis, Dorocidaris, 



Hesperocidaris, 22 

 Paracentrotus, 54 

 paradoxus, Zenocentrotus, 89 

 Paramaretia, 48 

 Parasalenia, 54 

 Paratrema, 60 

 Parechinus, 54 

 parvispina, Heliocidaris 



erythrogramma, 38 

 parvituberculata, Maretia, 



Eurypatagus, 48 

 parviungulatum, Araeosoma, 5 

 pateriformes, Clypeaster, 17 

 pattersoni, Salenia, 70 

 paucispinum, Araeosoma, 5 

 Diadema, 21 

 Hemiphormosoma, 40 

 paucituberculatus, Spatangus, 75 

 pellocrica, Mespilia globulus, 50 

 pellucida, Asthenosoma, 



Hapalosoma, 8 

 peloria, Maretia, Paramaretia, 48 

 peltata, Goniocidaris, 36 

 pentagonum, Echinostrephus, 28 

 pentagonus, Amblypneustes, 



Goniopneustes, 3 

 Periaster, 55 

 Pericosmus, 55 

 Peronella, 56 

 perplexa, Tretocidaris, 



Hesperocidaris, 88 



petersii, Phormosoma, 



Hygrosoma, 57 

 phormosoma, 56 

 Phyllacanthus, 58 

 picta, Echinometra, 27 

 Pilematechinus, 19 

 pileous, Toxopneustes, 88 

 placenta, Phormosoma, 57 

 placopetalus, Rhinobrissus, 69 



