. 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. ecies, although not represented by complete specimens, was dredged by theChallenger off St. Vincent, Cape Verde Islands, in July 1873. MTntosh identified thefragments before they came into my hands, and remarks upon them in his preliminarynotes as follows :— Two fragments of a form apparently closely related to Drepanophorus rubrostriatus,the two measuring about 14 mm. by about .3 mm. in breadth. The co
. 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. ecies, although not represented by complete specimens, was dredged by theChallenger off St. Vincent, Cape Verde Islands, in July 1873. MTntosh identified thefragments before they came into my hands, and remarks upon them in his preliminarynotes as follows :— Two fragments of a form apparently closely related to Drepanophorus rubrostriatus,the two measuring about 14 mm. by about .3 mm. in breadth. The colour of the animalis reddish-brown on the dorsum, with longitudinal pale stripes The ganglia and cephalic sacs are remarkably distinct and the nerve-cords have acellular investment. A very remarkable feature is the presence of large granular tubeswhich communicate with the cavity of the proboscis 16 THE VOYAGE OF CHALLENGER. The structure of the proboscidian sheath is peculiar, since the longitudinal fibres areclasped in spaces made of the circular coat and in transverse section the lining ispapUlose. Not only the remains of the external coloration but also the internal anatomy. st- i Fia. 1.—Armature of the jiroboscis of an adult Drepano^ihorus serraticoUis. H, curved handle of stylets with muscle-fibres attacheil to it; st, nail-shaped stylets in action; sf, nail-shaped stylets in accessory reservoirs, the number ofthese reservoirs more or less corresponding to that of the active stylets, and also increasing with age. convinced me of the identity of this fragmentary specimen with the Mediterraneanspecies, which has, moreover, already been found by Langerhans at Madeira. Although EEPORT ON THE NEMERTEA. 17 the Challenger specimen contained no proboscis (which had apparently been expelled), Icannot refrain from giving a woodcut of the curious and divergent armature of theproboscis as it was observed by me both in young and in older specimens of Drcpano-phorus from th
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