1790 



THE VOYAGE OF H.M.S. CHALLENGER. 



Phatnaspis 



coscinoides, 870. 



cristate, 869. 



ensiformis, 869. 



fenestrata, 869. 



haliommidium, 871. 



lacunaria, 869. 



loculata, 869. 



mulleri, 871. 



orthopora, 870. 



polypora, 870. 



quadratura, 871. 



tabulata, 871. 

 Phatnasplenium, 870. 

 Phlebarachnium, 1295. 



facetum, 1296. 



selosum, 1296. 



venosum, 1297. 

 Phcenicosphsera, 75. 

 Phormobotrys, 1124. 



cannothalamia, 1125 



hexathalamia, 1125. 



pentathalamia, 1124. 



polythalamia, 1125. 



trithalamia, 1124. 

 Phormoeampe, 1456. 



campanula, 1456. 



conus, 1458. 



eucalyptra, 1457. 



lamprocyclas, 1457. 



metalis, 1457. 



mitra, 1458. 

 PHORMOCAMPIDA, 1453. 

 PHORMOCYKTIDA, 1365. 

 Phormocyrtis, 1368. 



carinata, 1368. 



costata, 1369. 



embolum, 1369. 



fastosa, 1369. 



longicornis, 1370. 



quadrate, 1369. 

 Phormosphsera, 61. 

 PHOEMOSPTRIDA, 1084. 

 Phormospyris, 1076. 



tricostata, 1087. 



tridentata, 1087. 



trifoliata, 1087. 

 PHORTICIDA, 708. 

 Phorticium, 709. 



abnorme, 710. 



deforme, 710. 



pylonium, 709. 



spironium, 709. 

 Phortolarcus, 710. 

 Phortopj'le, 709. 

 Phractacantha, 755. 



bifurca, 755. 



bipennis, 755. 

 PHRACTACANTHIDA, 753. 

 Phractasparium, 808. 



PHRACTASPIDA, 808. 

 Phractaspidium, 810. 

 Phractaspis, 809. 



bipennis, 809. 



cataphracta, 810. 



complanata, 809. 



condylophora, 809. 



constricta, 810. 



prototypus, 809. 

 Phractasplenium, 809. 



bipenne, 809. 

 Phractopelta, 852. 



aspidomma, 854. 



dorataspis, 852. 



diporaspis, 852. 



dyadopora, 852. 



haliomma, 854. 



hexadopora, 853. 



hystrtx, 854. 



octedopora, 853. 



tessaraspis, 853. 



tessaromma, 854. 



tetradopora, 853. 

 PHRACTOPELTIDA, 847. 

 Phrenocodon, 1433. 



clathrostomium, 1434. 



diaphragma, 1434. 

 Phyllostaurus, 744. 

 Physematium, 34. 



atlanticum, 35. 



mulleri, 35. 



PlLOCYRTIDA, 1129. 



Pipetta, 337. 



conus, 338. 



fusus, 337. 



salpinx, 338. 



tuba, 337. 

 Pipettaria, 339. 



fusaria, 339. 



tubaria, 339. 

 Pipettella, 304. 



elongata, 305. 



fusiformis, 304. 



prismatica, 305. 



tubulosa, 305. 

 Pityomma, 299. 



drymodes, 260. 



piniferum, 260. 



scoparium, 259. 

 Plagiacantha, 909. 



abietina, 910. 



arachnoides, 910. 



dodecantha, 910. 



elatine, 911. 



furcata, 910. 



verticillata, 910. 

 PLAGIACANTHIDA, 898. 

 Plagiocarpa, 914. 



procortina, 914. 



procyrtella, 914. 



PLAGONIDA, 906. 

 Plagonidium, 913. 



bigeminum, 913. 



quadrigeminum, 914. 

 Plagoniscus, 912. 



cortinaris, 913. 



euscenium, 912. 



nassellaris, 913. 



tripodiscus, 912. 

 Plagoniuin, 916. 



arborescens, 917. 



distriactis, 917. 



lampoxanthium, 907. 



sphajrozoum, 916. 



trigeminum, 9] 7. 

 Platybursa, 1051. 



compressa, 1051. 

 Platycryphalus, 1298. 



sethodisciis, 1298. 

 PLECTANIDA, 919. 

 Plectaniscus, 924. 



archiscenium, 925. 



cladoscenium, 925. 



clathrocorys, 925. 



cortiniseus, 925. 



tripodiscus, 925. 

 Plectanium, 928. 



ovodimare, 928. 



sphaerozoum, 928. 



trigemiuum, 928. 

 PLECTELLABIA, 895. 

 PLECTIDA, 898. 

 Plectocoronis, 979. 



auacantha, 979. 



pentacantha, 979. 



triacantha, 979. 

 PLECTOIDEA, 898. 

 Plectophora, 922. 



arachnoides, 922. 



novena, 923. 



pyramidalis, 923. 



triomma, 922. 

 Plectopyrarais, 1256. 



dodecomma, 1258. 



fenestrata, 1259. 



furcata, 1259. 



heteromma, 1259. 



hexapleura, 1257. 



lagena, 1260. 



magnifica, 1257. 



polygonomma, 1258. 



polypleura, 1260. 



quadratomma, 1258. 



serrate, 1259. 



spongiosa, 1261. 



trapezomma, 1258. 

 Plegmosphsera, 87. 



ccelopila, 88. 



entodictyon, 83. 



exodictyon, 89. 



