. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. MtlDUS^. J I. 97 (ieniis Bythotiara (iiinther. Bythotiara murrayi Giintlicr. T('xtii,L;s, jiS .(o. This interesting medusa is thoroughly dealt with in my jiapcr on the medusae from the Danish ex- peditions to the Mediterranean (Kramp 1924, p. 12), where, a. o., I have demonstrated the existence of dwarf tentacles, strongly armed witli nematocj-sts, in tj-pe of structure recalling the dwarf tentacles of Tiaranua rotunda and, througli these latter, also the socalled cordyli (mar- ginal clubs
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. MtlDUS^. J I. 97 (ieniis Bythotiara (iiinther. Bythotiara murrayi Giintlicr. T('xtii,L;s, jiS .(o. This interesting medusa is thoroughly dealt with in my jiapcr on the medusae from the Danish ex- peditions to the Mediterranean (Kramp 1924, p. 12), where, a. o., I have demonstrated the existence of dwarf tentacles, strongly armed witli nematocj-sts, in tj-pe of structure recalling the dwarf tentacles of Tiaranua rotunda and, througli these latter, also the socalled cordyli (mar- ginal clubs) in the Iyaodiceida> among the lycplomeduste (see also Kramj) 1920a). — I have also (1924) mentioned the variations of the course of the radial canals in specimens from the Mediterranean. — Two specimens of By- fho/iaru >iiurrayi are to hand from a locality of Ireland (see below), one of which presents a very interesting peculiarity, not seen in this species be- fore. In several other species of Bj'thotiarida? {Calvcopsis, Sibogita) centripetal canals, issuing from the circular vessel, are normally present; in Bythotiara, on the other hand, such canals are not a normal feature, but now it appears from the specimen in question that they may occur. The individual is about iS mm wide and 19 nun high. It has 7 radial canals, 6 of which issue in pairs from the base of the manubrium as in normal individuals; but the fourth corner of the manuliriuui only gives rise to one, unbranched canal. A marginal tentacle is present outside the termination of each of these 7 canals. But on the right hand side of the termination of the unbranched ca- nal, at '/s tlie distance to the next radial canal, an eighth tentacle is found, and at the base of tliis tentacle. Fig. 38. liylhvliuni murrayi. Dia- gram illustrating the course of the radial canals in a specimen from S. \V. of Ireland, further men- tioned in the Please note that these images are extracted from scanned page im
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