1792 



THE VOYAGE OF H.M.S. CHALLENGER. 



Procyttarium, 13. 



primordiale, 13. 

 PKOTYMPANIDA, 991. 

 Protympanium, 991. 



amphipodium, 992. 



primordiale, 991. 



trissocircus, 992. 

 Prunocarpus, 316. 



artocarpium, 316. 



datura, 316. 



melocactus, 317. 



sparganium, 316. 

 PRUNOIDEA, 284. 

 PRUNOPHRACTA, 859. 

 Prunosphrera, 74. 

 Prunulum, 313. 



amygdalum, 313. 



cerasum, 313. 



coccymelium, 313. 



crenatum, 314. 



fenestratum, 315. 



frngulum, 313. 



persicum, 314. 



pyrenium, 315. 



triplex, 314. 

 Pseudocubns, 1010. 



hexapylus, 1011. 



obeliscus, 1010. 



octostylus, 1010. 

 Psilomelissa, 1208. 



calvata, 1209. 



galeata, 1208. 



hertwigii, 1209. 



phalaera, 1208. 



sphserocephala, 1209. 

 Pteractis, 535. 



elegans, 535. 

 Pterocanarium, 1329. 

 Pterocanidium, 1332. 

 Pterocanium, 1328. 



barbadense, 1318. 



bibrachiatum, 1327. 



bicorne, 1332. 



bombus, 1443. 



eampanella, 1331. 



charybdeum, 1336. 



contiguum, 1330. 



davisianum, 1437. 



depressum, 1331. 



eucolpum, 1332. 



faki/erum, 1317. 



gravidum, 1329. 



orcinum, 1329. 



prsetextuni, 1330. 



proserpinse, 1329. 



pyramis, 1330. 



saba, 1317. 



sphinx, 1443. 



trieolpum, 1331. 



trilobum, 1333. 



Pterocanium 



virgineum, 1330. 

 Pterocodon, 1333. 



apis, 1318. 



campana, 1333. 



eampanella, 1223. 



davisianus, 1437. 



favosus, 1334. 



ornatus, 1333. 

 Pterocorys, 1316. 



apis, 1318. 



aquila, 1317. 



barbadensis, 1318. 



campanula, 1316. 



carinata, 1316. 



columba, 1317. 



falcifera, 1317. 



hirundo, 1318. 



macroptera, 1321. 



melitta, 1319. 



pipetta, 1320. 



prismatica, 1320. 



rhinoceros, 1320. 



sabse, 1317. 



tricornis, 1320. 



tubulosa, 1319. 



turgida, 1319. 



zittelii, 1321. 

 Pterocorythium, 1320. 

 Pterocyrtidium, 1316. 



barbadense, 1318. 



ziUelii, 1321. 

 Pteropilium, 1326. 



bombus, 1443. 



clathrocanium, 1327. 



eques, 1327. 



hoplites, 1327. 



pyramis, 1443. 



sphinx, 1443. 



stratiotes, 1326. 

 Pteroscenium, 1151. 



arcadophorum, 1152. 



areuatum, 1152. 



macropodium, 1153. 



pinnatum, 1152. 



spinulosum, 1152. 



tripocolpum, 1153. 

 Pterosyringium, 1319. 



tubuhsum, 1319. 

 PYLOBOTRYIDA, 1119. 

 Pylobotrys, 1121. 



cerebralis, 1122. 



fontinalis, 1122. 



putealis, 1121. 

 PTLODISCIDA, 561. 

 Pylodiscus, 570. 



cardiopylus, 571. 



nephropylus, 571. 



sexangularis, 570. 



triangularis, 570. 



Pylolena, 568. 



inennis, 568. 



armata, 568. 

 PTLONIDA, 628. 

 Pylonium, 654. 



circozonium, 654. 



hexazonium, 655. 



nephropylium, 955. 



octacanthum, 655. 



quadricorne, 655. 



stenozonium, 656. 

 Pylospira, 697. 



tetrapyle, 698. 



octopyle, 698. 



cymbium, 698. 

 Pylospirema, 697. 

 PTLOSPTRIDA, 1078. 

 Pylospyris, 1083. 



canarieusis, 1084. 



denticulata, 1083 



trinacria, 1083. 

 Pylospironium, 698. 

 Pylozonium, 659. 



novemcinctum, 659. 



octacanthum, 660. 



Quadriloncharium, 776. 



QUADRILONCHIDA, 766. 



Quadrilonchidium, 777. 

 Quadrilonche, 776. 



mesostaura, 777. 



platystaura, 777. 



telostaura, 777. 



tetrastaura, 776. 



Rhaphidocapsa, 211. 

 Rhaphidococcus, 210. 



acufer, 211. 



lurianensis, 1762. 



simplex, 216. 

 Rhaphidodrymus, 214. 

 Rhaphidosphsera, 214. 



reticulata, 217. 

 Rhaphidozoum, 46. 



acuferum, 46. 



arachnoides, 47. 

 ascensionis, 48. 



asperum, 47. 



australe, 48. 



capense, 48. 



neapolitanum, 47. 



pacificum, 46. 



pandora, 49. 



patagonicum, 48. 



pelagicum, 46. 



polymorphum, 49. 

 Itliizoplegma, 275. 



lychnosphaera, 275. 



polyacanthum, 275. 



radicatum, 276. 



