. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 21 4. Tube without well-defined spines (glutinant) atrichous isorhiza — Tube with well-defined spines 5 5. Spines in basal region only basitrichous isorhiza — Spines in middle region only merotrichous isorhiza 6. Butt of equal diameter throughout, tube continued beyond butt (mastigophore) .. 7 — Butt of unequal diameter .. .. .. .. .. .. .. .. 8 7. Butt not more than 3 times length of capsute .. .. microbasic mastigophore — Butt at least 4 times length of
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. MONOGRAPH ON THE HYDROIDA OF SOUTHERN AFRICA 21 4. Tube without well-defined spines (glutinant) atrichous isorhiza — Tube with well-defined spines 5 5. Spines in basal region only basitrichous isorhiza — Spines in middle region only merotrichous isorhiza 6. Butt of equal diameter throughout, tube continued beyond butt (mastigophore) .. 7 — Butt of unequal diameter .. .. .. .. .. .. .. .. 8 7. Butt not more than 3 times length of capsute .. .. microbasic mastigophore — Butt at least 4 times length of capsule .. .. .. macrobasic mastigophore 8. Butt dilated at base stenotele (penetrant) — Butt dilated at distal end (eurytele) 9 9. Butt not more than 3 times length of capsule microbasic eurytele — Butt at least 4 times length of capsule .. .. .. .. macrobasic eurytele The total ensemble of nematocyst types possessed by a species is known as its CNIDOME. Nematocysts are occasionally concentrated on special stalks or processes known as cnidophores. These may occur in the polyp generation ( Euden- drium racemosum) or in the medusa (Zanclea, Proboscidactyla). UNDISCHARGED. 1. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
