. Report on the scientific results of the voyage of H. M. S. Challenger during the years 1873-76 under the command of Captain George S. and the late Captain Frank Tourle Thomson, R. N. imen came up in the trawl from a very considerabledepth in the South Pacific, about midway between New Zealand and Chili. Station 289, October 23, 1875 ; lat. 39° 41 S., long. 131° 23 W.; depth, 2550fathoms ; bottom, red clay ; bottom temperature, 34°3. HOMOLOGY OF THE RECENT PHYLLOC ARI DA. In the following pages I propose to discuss more in detail the homologies of theseveral parts in the Nebaliidse,
. Report on the scientific results of the voyage of H. M. S. Challenger during the years 1873-76 under the command of Captain George S. and the late Captain Frank Tourle Thomson, R. N. imen came up in the trawl from a very considerabledepth in the South Pacific, about midway between New Zealand and Chili. Station 289, October 23, 1875 ; lat. 39° 41 S., long. 131° 23 W.; depth, 2550fathoms ; bottom, red clay ; bottom temperature, 34°3. HOMOLOGY OF THE RECENT PHYLLOC ARI DA. In the following pages I propose to discuss more in detail the homologies of theseveral parts in the Nebaliidse, as compared with those in other recent Crustacea. Ashas been indicated at the beginning of this Report, my view as to the relationship ofthe genus Nabalia to other known Crustacea somewhat difiers from that set forth bymost other naturalists, and the examination of the two related new generic types pro-cured by the Challenger Expedition, and described above, has confirmed me still more inthe opinion at first adopted from a thorough investigation of our common northern form,Nebalia bipes, Fabricius, It is certainly astonishing that the great resemblance of Nebalia to certain Copepoda,. Fig. 2.—Diosaecus tenuicamis (Claus), mate. has escaped the attention of most naturalists who have subjected this genus to a closerexamination, whereas the much more remote affinity to the Podophthalmia has alwaysbeen dwelt upon, and even Professor Claus, to whom we are, as is well known, indebtedfor an admirable work on the free living Copepoda, does not seem to have been awareof this unmistakable resemblance ; I think it may be readily found by a closer com-parison, that the affinity of Nebalia to the Copepoda is in fact much greater than to thePodophthalmia, both as regards the external appearance and the structure of the severalappendages. In some other important points it exhibits, on the other hand, an evidentagreement with the Phyllopoda, and for that reason it ought to be, in my judgm
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