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. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. PENNATULIDA. 45 Halipteris christii (Kor. & Dan.). PI. II, Figs. 30, 31, 32. Virgularia Christii Kor. Dan. Nyt Mag. for Naturvidensk. 5 Bd. 1848, S. 269; Faun. litt. Norv. II. 1856, , Tab. XII, Fig. 7—12. Norticina Christii Gray. Catal. Sea-Pens, 1870, S. 13. Halipteris Kolliker. Monogr., S. 241, Fig. 146, 147. Lygomorpha Sarsii Kor. Dan. Faun. litt. Norv. Ill, 1877, S. 99, Tab. IX, Fig. 7—12. Protoptiluni tortiim Grieg. Bergens Mus. Aarbog 1886, S. 13, Tab. VII, Fig. 19, 20, Tab. VIII, Fig. 1—3. Stichoptilum arcticu
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. PENNATULIDA. 45 Halipteris christii (Kor. & Dan.). PI. II, Figs. 30, 31, 32. Virgularia Christii Kor. Dan. Nyt Mag. for Naturvidensk. 5 Bd. 1848, S. 269; Faun. litt. Norv. II. 1856, , Tab. XII, Fig. 7—12. Norticina Christii Gray. Catal. Sea-Pens, 1870, S. 13. Halipteris Kolliker. Monogr., S. 241, Fig. 146, 147. Lygomorpha Sarsii Kor. Dan. Faun. litt. Norv. Ill, 1877, S. 99, Tab. IX, Fig. 7—12. Protoptiluni tortiim Grieg. Bergens Mus. Aarbog 1886, S. 13, Tab. VII, Fig. 19, 20, Tab. VIII, Fig. 1—3. Stichoptilum arcticum Grieg. Ibid. S. 15, Tab. VIII, Fig. 4, 5, Tab. IX. From a fishing bank ca. 20 miles east of FuglS, the Fceroe Isles, the Copenhagen Museum received through Agent Miiller in 1899 a nue an(^ complete specimen, io40,nm long, of which the peduncle makes only 8o'r,m, and again in 1902 from the same donor an excellent, smaller specimen from the Fseroe Isles, 4oomm long (the peduncle 56"""). Young stages of this species differ so much from the grown form, that they have been described as independent genera and referred to quite a different family. On some of them Kor en and Danielssen have formed the genus Lygomorplia, on others Grieg has formed the genus Sticho- ptiluni, whilst some specimens have been referred by the same author as a new species to the genus Protoptihuii Koll.; all these genera; were again gathered into the family Protoptilidce of Kolliker. That I can now with perfect surety refer them to their right place as Halipteris christii, is due to the circumstance that I have been able to examine the respective type-specimens, and to compare them with one another, and with a large and good material of larger and full-grown specimens; upon the whole I have had before me a tolerably entire series from a length of ca. 73""™ up to about four feet. The most important aid to recognizing the younger stage as Halipteris christii is the form of the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscienti, bookyear1904