. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XLIII. Plumularian hydroid. Aglaophemia struthioides, magnified. Aglaophemia falcata. HYDROZOA 127 over the fronds of seaweeds, often crossing and recrossing in a tangledmass. At short intervals the upright, straight branches rise to one inchor one and a half inches in height, and arc more or less branched. Allexcept the creeping steins are close set on each side, with cylindricalzooid-cups which turn outward at the ends. The cups of the reproduc-
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . PLATE XLIII. Plumularian hydroid. Aglaophemia struthioides, magnified. Aglaophemia falcata. HYDROZOA 127 over the fronds of seaweeds, often crossing and recrossing in a tangledmass. At short intervals the upright, straight branches rise to one inchor one and a half inches in height, and arc more or less branched. Allexcept the creeping steins are close set on each side, with cylindricalzooid-cups which turn outward at the ends. The cups of the reproduc-tive zooids are not sessile; they are much larger than those of the nutri-tive ones and are urn-shaped. (Plate XLII, A.) S. ((ff/enteti. This is a beautiful species, common from New Jerseynorthward. It has a profusion of silvery branches on a dark stem. Thecolonies are often a foot or more long, and the branches at the top andbottom of the stem are shorter and fewer than those in the middle ofthe colony. The zooid-cups are nearly cylindrical, pressed closely to thestem, nearly opposite or subalternate to one anot
Size: 2032px × 1229px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
