The book The Danish Ingolf Expedition volume 42 was written by author Danish Ingolf Expedition 1895 1896 Here you can read free online of The Danish Ingolf Expedition volume 42 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Danish Ingolf Expedition volume 42 a good or bad book?
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That it should be necessary to make P. Hispida the type of a separate genus there is no reasen to suppose. Spatagocystis Challcngeri A. Ag. Has been very carefully worked out, especially in the Panamic Deep-Sea Echini (p. 141), as regards the structure of the test Three kinds of pedicellariae have been figured in the Challenger >-Report (PI. XLJI. 10 12 and XLV. 39 43), though - - as is mostly the case in that work not mentioned in the text I have found (on specimens examined in the British Mus...eum) two kinds of pedicellarise, viz. Tridentate and rostrate. Further I find in my preparation a single globiferous and an ophicephalous pedicellaria resembling exactly those of Urechinus Wyvillii. As the specimens examined proceed from St. 147 from which station also Urec/i. Wyvillii is recorded, I think these pedicellariae do really belong to that species, having only accidentally got between those of Spatagocystis. The tridentate pedicellariae are richly developed, occurring in at least two different forms, viz.
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