m I I ' - - I THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA PRESENTED BY PROF. CHARLES A. KOFOID AND MRS. PRUDENCE W. KOFOID . THE VOYAGE OF H.M.S. CHALLENGER. ZOOLOGY--VOL. XVIII. PLAT MA REPORT ON TUT. SCIENTIFIC RESULTS or THE VOYAGE OF H.M.S. CHALLENGER DURING THE YEARS 1873-76 UNDER THE COMMAND OF CAPTAIN GEORGE S. NARES, R.N., F.R.S. AND THE LATE CAPTAIN FRANK TOURLE THOMSON, R.N. PREPARED UNDER THE SUPERINTENDENCE OF THE LATE Sir C. \\VVILLE THOMSON, Knt., F.R.S., &c. REGIUS PROFESSOR OP NATURAL HISTORY IN THE UNIVERSITY OF EOINRUKGH HI RECTOR Of THE CIVILIAN SCIENTIFIC STAFF ON BOARD AND NOW OF JOHN MURRAY ONE OF THE NATURALISTS OF THE EXPEDITION ZOOLOGY- -VOL. XVIII. PLATES bj> OrDrr of Iper #lajrstp's 0obrrnmrnt PRINTED FOR HER MAJESTY'S STATIONERY OFFICE AND SOLD IT LONDON :-EYRE & SPOTTISWOODE, EAST HARDING STREET, FETTER LANE EDINBURGH :-ADAM & CHARLES BLACK DUBLIN :-HODGES, FIGGIS, A CO. 1887 (in Two farts, u-it/t a Volume of Plates) £$, l ' 1. ACTISSA. 2. THALASSOLAMPE. :) THALASSOPILA, 4.5. THALASSOCOLLA. PLATE 2. Legion SPUMELLARIA. Order BELOIDEA. Family T»ALA88O8PHjERIDA. PLATE 2. THALASSOSPH^ERIDA. Diam. 1'aur Fig. 1. Lampoxanthium pandora, n. sp., . . . x 120 38 The central capsule exhibits distinct pore-canals in its membrane, and a clear interval between this and the coagulated and vacuolated proto- plasm. The central nucleus contains numerous dark nucleoli. The apicula are scattered throughout the alveolate calymnia. Fig. 2. Tlialassoplancta brevispicula, n. sp. (vel Lampoxanthium brevi- spiculum), . . . . . . . x 120 36 The central capsule contains numerous clear vacuoles, and in the cortical zone a layer of large oil-globules. The central nucleus includes numer- ous dark nucleoli. The calymma is alveolate. The spicula lie only in the cortical zone. Fig. 3. Thalassoxanthium cervicome, n. sp., . . . . x 300 33 The central capsule is filled up by clear vacuolos and contains a large central nucleus, with a single nucleolus. The spicula surround the thin calymma. Fig. 4. Thalassoxanthium cervicorne, n. sp., . . . x 600 33 A single spiculum. Fig. 5. Thalassoxanthium medusinum, n. sp., . . . . x 120 32 The central capsule is filled up by clear vacuoles and contains on its cortical zone a layer of large oil-globules. The central nucleus contains numer- ous dark nucleoli. The calymma is radially striped, contains numerous small xanthellEB, and is surrounded by the spicula. Fig. 6. Th(dassoxanthium octoceras, n. sp., . . x 400 34 Three isolated spicula. Tfcr \*rmtt 4 II M S LAMPOXANTHIUM. PLATE 3. Legion SPUMELLARIA. Order COLLOIDEA. Family COLLOZOIDA. (tool. CHALU tip. — PART xi.— 1886.)— Rr. PLATE 3. COLLOZOIDA. Diam. Page Fig. 1. Collozoum serpentinum, n. sp. (vel Collophidium serpentinum, Hkl.), . x 10 26 A living ccenobium, with expanded pseudopodia. The spherical calymma (or the common jelly-mass of the colony) is alveolate and contains numerous cylindrical, serpentine, central capsules. Numerous yellow cells or xanthellfe are scattered between the radial pseudopodia in the periphery. Fig. 2. Collozoum serpentinum, n. sp., .... . x 50 26 An isolated, cylindrical, worm-shaped, central capsule, with an axial series of oil-globules ; the red points are nuclei. Fig. 3. Collozoum serpentinum, n. sp., . x 150 26 An isolated, cylindrical, serpentine, central capsule, k, Oil-globules forming an axial series ; n, densely placed, red-coloured nuclei ; c, the capsule membrane under which are scattered small black pigment spots in the colourless cortical zone of the endoplasm ; n, extracapsular alveoles; x, xanthella? or "yellow cells." Fig. 4. Collozoum amceboides, n. sp., . . . . . . . x 100 28 A spherical coenobium or jelly-colony. Each amoeboid central capsule contains an oil- globule ; the small red points are nuclei. Fig. 5. Collozoum amceboides, n. sp., ..... . x 400 28 c, A single isolated central capsule ; n, nuclei ; k, oil-globule. Fig. 6. Collozoum vermiforme, n. sp., . . . . . . . x 30 27 g, A spherical ccenobinm or jelly-colony ; a, large alveoles, forming a cortical zone; c, central capsules; k, oil-globules. Fig. 7. Collozoum vermiforme, n. sp., . . . . . . . x 100 27 c, A single isolated central capsule ; x, xanthclhu surroundiug this central capsule ; k, oil- globules; n, nuclei. Fig. 8. Collozoum ellipsoides, n. sp., .... . x 2 26 A spherical colony ; the red points arc central capsules. Fig. 9. Collozoum ellipsoides, n. sp., .... x 150 26 c, A single isolated central capsule ; k, oil-globules ; n, nuclei. Fig. 10. Collozoum inerme, Hkl., ..... . x 2 25 An old, cylindrical, articulated ccenobium ; the red points are central capsules. Fig. 11. Collozoum inerme, Hkl., . . . . . . x 2 25 A young cylindrical ccenobium ; the red points are central capsules. Fig. 12. Collozoum inerme, Hkl., . . . . . . x 400 25 A piece of a young colony with eight small central capsules, without oil-globules, n, The central nucleus in different stages of division. Two capsules are also dividing, a-, Xan- thellx in the jelly-like calymma (blue), which also contains numerous vacuolcs. . COLLOZOUM PLATE 4. Legion SPUMELLARIA. Order LARCOIDEA. Family THOLONIDA. PLATE 4. SPH^EOZOIDA. Diam. Page Fig. 1. Sphcerozoum trigeminum, n. sp., . . . . x 50 43 An annular colony. The main mass of the jelly-colony is tilled up by large alveoles ; the entire surface is densely covered with spicula, and beyond this skeleton-cover lie the spherical central capsules, each with an oil- globule. This species is by mistake not mentioned in the text. Fig. 2. Sphcerozoum alveolatum, n. sp., . . . . x 50 43 Section through a spherical colony; displaying the inside of a hemisphere. All the central capsules lie in a single stratum on the surface of the jelly-sphere, each being surrounded by a thick-walled alveole. The •spicula lie between the alveole and the capsule, which includes a central oil-globule. Fig. 3. Sphcerozoum alveolatum, n. sp.,. . . . x 400 43 A single central capsule, filled up by crystal-spores. Numerous geminato- radiate spicula and spherical xanthellse lie between the. capsule and the including thick-walled alveole. In the jelly -calymma, between the cap- sule and the alveole, numerous thin ramified pseudopodia are expanded. Fig. 4. Sphcerozoum geminatum, n. sp., . . . x 400 45 A single central capsule, with a central oil-globule, surrounded by numerous spicula and spherical xanthellae. The jelly-substance of the calymma is expanded between the points of the spicula. Fig. 5. Sphcerozoum variabile, n. sp., . . . . x 300 45 Three isolated spicula. Fig. 6. Sphcerozoum pandora, n. sp. (vel Rhaphidozoum pandora], . x 300 49 A group of various spicula. Fig. 7. Sphcerozoum verticillatum, n. sp., . . . . x 300 44 A single spiculum. Fig. 8. Sphcerozoum arborescens, n. sp., . . . x 300 44 A single spiculum. Fig. 9. Sphcerozoum armatiim, n. sp., . . . . . x 300 43 A single spiculum. lUli.Ur.j I'l i fcl SPHAEROZOUM. PLATE 5. Legion SPUMELLARIA. Onl.-r SPH.KKOIDEA. K.iniily <'<>l. i,«>s i- M i H I i>.\. (IOOL OHAIX. EXP.— PACT XI. — 1886.)— Rr. PLATE 5. COLLOSPH^RIDA. Diam. Page Fig. 1. Trypanosphcera transformata, n. sp., . . . x 150 111 A living colony. The centre of the spherical coenobium contains a large alveole, surrounded by a net of surcode. The entire calymma is filled up by smaller, thin-walled alveoles. Its inner part contains numerous small, young, central capsules (each with an oil-globule) without, shells ; in the cortical zone of the calymma lie larger capsules, each of which is enclosed by a fenestrated shell with from two to four or more dentated tubes. Between the radiant pseudopodia very numerous small yellow cells (xanthellse), which are scattered everywhere. Fig. 2. TrypanospJmra transformata, n. sp., . . . x 300 111 A single shell. Fig. 3. Trypansophcera coronata, n. sp., ... . x 300 110 Fig. 4. Trypanosphcera trepanata, n. sp., . . . . x 300 110 Fig. 5. Odontosphcera monodon, n. sp., . . . . x 300 102 Fig. 6. Odontosplicera cyrtodon, n. sp., . . . . x 300 102 Fig. 7. Acrosphcera inflata, n. sp., . . . . x 300 101 Fig. 8. Mazosphcera hippotis, n. sp., . . . • . x 400 108 Fig. 9. Mazosp/mra lagotis, n. sp., . . . . x 300 108 Fig. 10. Pharyngosphwa stomodcea, n. sp., . . . . x 400 98 Fig. 11. Bwscinosphosra invaginata, n. sp., . . . . x 500 99 Each shell contains numerous larger and smaller crystals. Fig. 12. Tribonosphcera centripetalis, n. sp., . . . . x 500 98 Each shell contains numerous large crystals. Fig. 13. Collosphcera polygona, n. sp., . . . . x 200 96 Hndiobirin PI. .V ,:./ — i^^ritt ~ ~**^ 'S- 3 4 • -. - I 4. TRYPANOSPHAERA. 5 9. MAZOSPHAERA. 10. II. BUCCINOSPHAERA 12 13. COLLOSPHAERA PLATE 6. Legion SPUMELLARIA. Onl«r SPH^EROIDEA. Family COLLOHPH^EBIDA. PLATE 6. COLLOSPH^ERIDA. Diam. Page Fig. 1. Siphonosphcera socialis, n. sp., . . x 509 106 A small piece of the surface of a living ccenobium, seen from the surface. Only four individuals are visible, the central capsule of which contains numerous small nuclei and a central oil-globule. The including spherical lattice-shell is provided with a few (one to four) larger apertures, which are prolonged into short cylindrical tubules. Through these latter radiate bundles of fine pseudopodia, branching and anastomosing, and forming a fine sarcode network between the alveoles of the calyinma. On the surface of the alveolated jelly-sphere the pseudopodia form a dense radiating zone. Xanthella or yellow cells are everywhere scattered. Fig. 2. Siphonosphcera socialis, n. sp., .... x 300 106 A small coenobium or colony in the state of alveolation, forming a jelly-sphere, composed of a great number of capsulated individuals, densely aggregated. Each central capsule contains an oil-globule, and is enclosed by a spherical lattice-shell, which bears a few (one to four) short cylindrical tubules. Each shell is again enveloped by a membranous polyhedral alveole and separated from it by structureless jelly. The thick cortical jelly -envelope, which surrounds the whole spherical colony, exhibits a fine radial striation, produced by radiating psendopodia ; many xanthella! or yellow cells are scattered in the calymma. Fig. 3. Siphonosphcera pipetta, n. sp., ... x 300 108 Fig. 4. Siphonosphcera tubulosa, J. Muller, . . x 300 105 The central capsule, enclosed in the cavity of the shell, has a central oil-globule, and is surrounded by a few xanthella. Fig. 5. Siphonosphcera chonophora, n. sp., ... x 300 107 Central capsule as in figs. 4 and 7. Fig. 0. Siphonosphcera serpula, n. sp., .... x 300 107 Fig. 7. SipJwnosjjhccra patinaria, n. sp., .... x 300 105 The central capsule, enclosed in the cavity of the shell, contains a central oil-globule, and is surrounded by a few xanthella. Fig. 8. Siphonosphcera patinaria, D. sp., ... x 300 105 Fig. 9. Siphonosphcera conifera, n. sp., . . x 300 106 Fig. 10. Siphonosphcera cyathina, n. sp., x 300 105 ThrW-.v..l II.MS riMll.in.vi- lUltulai,., I'l tt ^ r IS? v\^2 t •.•'•'-', |< r < t Or" SIPHONOSPHAERA ., 'y^ 10 PLATE 7. Legion SPUMELLAR1A. Ord., si-ll. Kin >IDEA. F.nnily (IOOL. CHALI- UP.— PAST XL.— 1886.)— Rr. PLATE 7. CoLLOSPHiERIDA. . Diam. Page J'ig. 1. Cammosphcera dendrophora, n. sp., . . x 300 112 Fig. 2. Cannnoxplicem dichotoma, n. sp., . x 300 112 Fig. 3. CoronoapJuera dictdema, n. sp.. . . x 390 117 Fig. 4. Corotiospfuem calycina, n. sp.. . x 300 117 Fig. 5. Otosphara onriculata, u. sp., . . x 390 Hf> Fig. (j. Otosphcerapolymorpka,'i\.giQ,> x 390 115 Fig. 7. Solenonphara serpentina, \\. &]<.. x 399 jj^ l''iu. 8. Sotenosphara cornucopia, n. sp., x 399 115 Fig. !). Solenoftphcera ascensionis, n. sp., . x 399 115 Fig. 10. Solenosphtera 'pandora, n. sp., x 300 113 Fig. 11. Solcnosph&ra pandora, n. sp., x 199 jj3 An entire spherical ctpnobium. The shells ot the colony bear a variable number of fenestratcd radial tubes and are densely crowded in the jelly-sphere of the calymma, the cortical zono of which is radially striped. K*U.m PI 7 1.2. CAMINOSPHAERA . 3.4. CORONOSPHAERA 7-11. SOLENOSPHAERA 5.0. OTOSPHAERA . PLATE 8. Legion SPUMELLARIA. Order SPH^EROIDEA. Family OOLLOSPHARIDA. PLATE 8. COLLOSPH^KIDA. Diain. Page Fig. 1. Acrosphara echinoides, n. sp., . . . . x 400 100 Fig. 2. Acrospluzra collina, u. sp., . . . . x 300 101 Fig. 3. Chcenicosphcera ncuriterna, n. sp., . . x 400 103 Fig. 4. Chcenicosphcera murrayana, n. sp., . . . . x 300 102 Fig. 5. Chcenicosphcera flamtnabunda, n. sp., . . . x 300 103 Fig. 6. Clathrosphcera circumtexta, n. sp., . . . . x 400 118 Fig. 7. Clathrosphwa arachnoides, n. sp., . . . x 300 119 Fig. 8. Clathrospluera lamellosa, n. sp., . . . . x 300 119 Fig. 9. Xanihiosphcera erinacea, n. sp., . . . . . x 400 120 Fig. 10. Xanthiospluera lappacea, n. sp., . . , . x 300 120 Fig. 11. Xanthiosphvera lappacea, n. sp., . . . x 100 120 A complete spherical ccunobiuin. The associated central capsules (each with a double shell) are densely crowded in the central part of the calymma, whilst its peripheral part is occupied by a layer of large alveoles. Numerous xanthellae or yellow cells are scattered in the calymma. . hrVnvHijp nfll. M S Thalla» i !l..il,iil.in.i I'l it. * 'r ^rccr ^'r r(M •' , 1. 2. ACROSPHAERA. 3 5.CHOENICOSPHAERA. 6 8. CLATHROSPHAERA. 9 II XANTHIOSPHAERA PLATE 9. Legion SPUMELLARIA. Onlcr LAKOUDKA. Family I' v 1. 1» x I DA. flOOU CHALL. KXP.— PAUT XU — 188«.)- PLATE 9. • PYLONIDA. Diam. Page Fig. 1. Monozonium alatum, n. sp., . . . . x 300 633 Dorsal view. Fig. la. Apical view. Fig. 2. Dizonium pleumcanthum, n, sp., . . x 400 63(5 Fig. 3. Dizonium stauracanthum, n. sp., . x 300 636 Fig. 4. Tnzonium tncinctum, n. sp., . . x 300 637 Dorsal view. Fig. 4.,..- Jll il S I I,, II. lUliaUii* 11 » , \, ; * "^"•^> -*« mSQA. yf&i ' .-, „ ; - r \ x- V I A.TRIZONIUM, 5 1.AMPHIPYLE, H 10. T E T R A PYLE , II 13. OCTOPYLE, 14 l« PYLONIUM. PLATE 10. Legion SPUMELLARIA. Onl.-r I.ARCOIDEA. Family THOI.ONIDA. PLATE 10. THOLONIDA. Diam. Page Fig. 1. Tholartus tricohu, n. sp., . . . . x .200 664 Fig. 2. Tholodes cupula, n. sp., x 500 665 Fig. 3. Amphitholus artiscus, n. sp., ... x 400 666 Fig. 4. Amphitholus panicium, n. sp., . . x ,,00 Fig. 5. Amphitholus acanthometra, n. sp., . . x 399 Fig. 6. Amphitholus acanthometra, n. sp., . . x 390 667 Frontal section of the shell. Fig. 7. Amphitholonium tricolonium, n. sp., . . x 390 669 Fig. 8. Staurotholus tetrastylus, n. sp., . x 300 673 Fig. 9. Staurotholus dodecastylus, n. sp., . . x 490 (574 Fig. 10. Tholoma quadrigcminum, u. sp., . . x 200 67-> Fig. 11. Staurotholonium octodoronium, n. sp., . x 390 676 Fig. 12. Tholocubus tessellatus, n. sp., ... x 200 677 Fig. 13. Tholoma metallasson, n. sp., ... x 399 ^72 Fig. 14. Cubotholus regularis, u. sp., . . . x 200 680 Fig. 15. Cubotholonium ellipsoides, n. sp., ... x 300 682 Fig. 16. Tholocubus tesseralis, n. sp., ... x 499 Fig. 17. Tholonium hexonium, .... x 499 lVUn*r 4 II M S. (lull. I -I Id ; J 2. THOLARTU 8, 3 7. AM PH ITH 0 L U S. 8 10 STA U R 0 THO LU 8. II 13. THOLOMA II 15. CUBOTHOLUS, Mi 17 THOLONIUM. PLATE 11. Legion SPUMELLARIA. Order SPttfiROIDEA. Family AHTROSPH/ERIDA. (ioou CHAU- nr.— fifi IL.— 1886.}— Kr PLATE 11. ASTROSPH^ERIDA. Diam. Page Fig. 1. Lychnosphcera regina, n. sp., . . . . . x 200 277 The entire shell and the central capsule. Numerous club-shaped radial apophyses or coccal sacs arise from the pink central capsule and are protruded through the pores of the medullary shell, which is com- pletely hidden by them. The sarcomatrix in the calymma, surrounding the central capsule, exhibits a fine radial striation. Numerous retracted pseudopodia, bearing red granules, arise from the sarcomatrix and pierce the calymma radially. The interval between the two concentric shells is filled up by the hyaline calymma. Fig. 2. Lychnosphcera regina, n. sp., . . . . . x 400 277 A part of the cortical shell, with a radial spine. Fig. 3. Lychnosphcera regina, n. sp., . . . . . x 400 277 The medullary shell and the basal parts of the radial spines arising from it Fig. 4. Lychnosphcera regina, n. sp., . . . . . x 400 277 Distal end of a radial spine. Fig. 5. JRhizoplegma lychnosphcera, n. sp., . . . x 200 276 The central capsule and the enclosed parts of the skeleton. The protoplasm is radially striped. The central nucleus (red) sends out numerous radial apophyses, which are protruded through the pores of the medul- lary shell. Mtahn. PI II LYCHNOSPHAERA PLATE 12. Legion SPUMELLARIA. Orders PH^EOSPILERIA BT 8PILEROIDEA. Families OROSPH.SBIDA, ASTBOSPH^BIDA ct LIOSPH^BIDA. PLATE 12. OROSPH.ERIDA, ASTKOSPH^BIDA et LIOSPH.ERIDA. Diam. Page Fig. 1. Orosphcera huxleyii, n. sp. (vel Oroscena huxleyii), . . x 50 1599 Fig. la. A piece of the network, the hare of which contain partly an axial canal, . . . . . . . x 200 1599 Fig. 2. Conosphcera orthoconus, n. sp., . . . x 200 221 Fig. 3. Conosphcera platyconus, n. sp., . . . x 300 221 Fig. 4. Conosphcera plagioconus, n. sp., . . . x 300 222 Fig^ 5. Ethmosphcera conosiphonia, n. sp., . . x 400 69 Fig. 5a. Vertical section through the wall. Fig. 6. Ethmosphcera polysiphonia, n. sp., . . . x 400 70 Fig. 7. Cenosphcera compacta, n. sp., . . . . x 300 65 Fig. 8. Cenosphcera elysia, n. sp., . . . . x 300 64 Fig. 8«. Vertical section through the wall Fig. 9. Cenosphcera mellifica, n. sp., . . . . x 300 62 Fig. 10. Cenosphcera favosa, n. sp., . . . . x 300 62 Fig. 10«. Vertical section through the wall Fig. 11. Cenosphcera vesparia, n. sp., . . . . . x 300 62 Fig. 11 a. Vertical section through the wall. TWV.«.,.j, .,: II M v i|,.,l!.- l!n.|i..l.in.t I'l 12 .--/_. TS» X /> > m^m &&t ^^'. e 1 OROSPHAERA.2-4 CONOSPHAERA . 5 « ETHMOSPHAERA . 7-11 CERIOSPHAERA PLATE 13. Legion SPUMELLARIA. Orders SPPLERolDEA ET PRUNOIDEA. Families STY LOSPH*RID A et EL LI PS ID A. (TOOL. CBAU. or — r*«T xu—1886.)— iir. PLATE 13. STYLOSPH^EKIDA et ELLIPSIDA. Diam. Page Fig. 1. Ellipsostylus aquila, n. sp., . . . . x 300 300 Fig. 2. Ellipsostylus hirundo, n. sp., . . . . . x 300 301 Fig. 3. Ellipsostylus columba, n. sp., . . . . . x 300 300 Fig. 4. Xiphostylus alcedo, n. sp., . . . . x 400 127 Fig. 5. Xiphostylus edolius, n. sp., . . . . . x 400 130 Fig. 6. Ellij)sostylus psittacus, n. sp., . . . . . x 400 300 Fig. 7. Stylostaums caudatus, n. sp., . . .,, . . x 400 157 Fig. 8. Ellipsostylus ciconia, n. sp., . -, *, . . x 300 300 Fig. 9. Xiphostylus phasianus, n. sp., rolll M S Cl.nl!. PI 11 1 -11 XIPHOSPHAERA. 12-17 LITHOM ESPILUS PLATE 15. Legion SPUMELLARIA. Orders SPILEROIDEA CT PRUNOIDEA. Families STAUBOSPH/EBIDA ot DBDPPULIDA. (COOK. CHAU- OP. — PART XL.— 188