Pages 105–112, Text | Echini. Echinonëus and micropetalon, by A. M. Westergren

“ALBATROSS” TROPIGAL PAGIFIG Ex. 1899-1900. EGHINONEUS PLATE I?, A.M Westeréren del l AM MWesteréren del. B.Meisel lith

PLATE18.

1-11.EchinonéuscyclostomusLESsKE. Valves of tridentate pedicellariae. 1.— Stalk and head, 0.95 mm. long. ) 2.— Valve A, 0.51 mm. interior view. } 3.— Valve B, 0.50 mm. interior view. | 4.— Valve B, 0.50 mm. interior view, profile. | 5.—ValveC,0.47mm.interiorview. 6.— Valve C, 0.47 mm. exterior view. J 1-6.—Arefromrightanteriorinterambulacrum,midwaybetweentheactinalsystemandthe ambitus.Dryspecimen,withspinesmeasuring34mm.long.LordHoweIsland. Of a single pedicellaria. 7.—ValveB,0.47mm.interiorview,neartheactinostomeinoddposteriorinterambulacrum. 8.—ValveB,0.47mm.exteriorviewneartheactinostomeinoddanteriorambulacrum. 9.—ValveB,0.45mm.exteriorviewmidwaybetweenactinalsystemandtheambitus,inrightanterior interambulacrum. 7-9.—Alcoholicspecimenwithspinesmeasuring15mm.long.MakemoIsland,PaumotuIslands. 10.—ValveC,0.22mm.exteriorview. 11.—ValveC,0.22mm.interiorviewtowardsambitus,actinalside,inleftposteriorinterambulacrum. Testmeasuring34mm.long.LordHoweIsland. The measurement refers to height of valves natural size.

AllofthesameenlargementwithexceptionofFigure1,whichisonasmallerscale.

oe ‘ EGHINONEUS PLATE 18. “KY BATROSS TROPIGAL PAGIFIG Ex.

1899-1900. B Meisel lith

= :

MPLTerns PLATE 19.

PLATE19.

1-7.EchinonéuscyclostomusLrEske. Valves of tridentate pedicellariae.

1.—Stalkandhead,valveBinthecentre.Heightofhead0.63mm. 2.—ValveA,0.63mm.interiorview,profile. 3.— Valve B, 0.62 mm. interior view. Of a single pedicellaria. 4.— Valve C, 0.61 mm. exterior view. ¢ 1-4 are taken from right posterior interambulacrum, near the actinostome. Alcoholic specimen, i measuring19mm.long.FakaravaIsland,PaumotuIslands. 5.—ValveB,0.67mm.interiorview. 6.—ValveC,fragment,exteriorview,bothfromoddposteriorinterambulacrum,towardsaboralend ofanalsystem.Alcoholicspecimen,measuring23mm.long.FakaravaIsland. 7.—ValveB,0.54mm.interiorview,fromadoralendofanalsystem.Alcoholicspecimenwithspines, measuring26mm.long.Barbados(?). Magnification precisely as on Plate 18.

Historical text. Published in 1911. Scientific knowledge, names and medical understanding have changed since; this is a historical source, not current scientific or medical guidance. The text is taken from a digitised scan, so recognition errors from the scan may remain, and plates and figures are not reproduced.

Attribution. Westergren, A. M. (1911). Echini. Echinonëus and micropetalon, by A. M. Westergren. Digitised text released under CC0 1.0 via Zenodo (10.5281/zenodo.16697177). CC0 1.0. Original source ↗. Text extracted from the digitised PDF without changes to wording; page images, figures and plates are not reproduced. OCR errors in the source scan may remain.