THE 
VOYAGE OF H.M.S. CHALLENGER. 
VACKOM LORE ae 
REPORT on the Hyproma dredged by H.M. 8, Challenger during the 
years 1873-76. By Professor G: J! ye “ALLMAN, MDL? EDs 
ER C25. le Bios: <o-H. MER EA, C.MZS., &e. 
PART IL—PLUMULARIDA. 
INTRODU CLLON, 
Ix the descriptive zoology of the Plumularide a considerable amount of literature 
already exists. ‘The British species have, in more recent times, been studied by several 
observers, and more especially by Hincks,! whose valuable History of the British 
Hydroid Zoophytes has greatly facilitated the labours of such zoologists as have since 
worked at species from other seas. Among the more important recent contributions to 
our knowledge of foreign forms must be mentioned the descriptions given by Busk,” of 
the species collected during the exploratory expedition of the “ Rattlesnake” ; the memoirs 
by Kirchenpauer,? in which a large number of new species contained in various 
continental collections has been described and figured ; and that by G. Ossian Sars,* in 
which we find descriptions and figures of many new and interesting Plumularide from 
1 A History of the British Hydroid Zoophytes, by Thomas Hincks, London, Van Voorst, 1868. 
2 Narrative of the Voyage of H.M.S. “ Rattlesnake,” London, 1852. Account of the Polyzoa and Sertularian Zoo- 
phytes, by George Busk, Appendix, vol. i. 
z Reteahedaner. Ueber die Hydroidenfamilie Plumularide. Abhandl. aus der Gebiete der Naturwiss. von dem 
naturwiss. Verein in Hamburg, Bd. v., vi., 1872 and 1876. 
4G. O. Sars, Bidrag til ane om Norges Hydroider. Forhandl. Vidensk. Selsk. 7 Christinia, Aar 1873. 
(ZOOL. CHALL. EXP.—PART xx.—1883,) Ul 
