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egredientibus, cellulis subcylindricis medio vel paullo supra medium plus minus 
inflatis, 6 —10,5 y longis, 2—3,5 y latis. Chromatophorum ut videtur, unicum pa- 
rietale pyrenoide instructum. Pili hyalini desunt. Monosporangia extra cuticulam 
emergentia solitaria breviter stipitata, stipite unicellulari, rarius in filis endophyticis 
sessilia, ovata, 5—6,5 longa, 3—4 7 lata. 
In a specimen of Polysiphonia urceolata dredged in the Skagerak off Hirshals 
Fig. 55. 
Chantransia emergens. A, filaments growing under the cuticle of the host, seen partly from the face partly 
in profile (at left); a pericentral cell of Polysiphonia is shown. B, transverse section of Polysiphonia with 
the endophyte. C, endophytic filaments. D and E, cells showing the chromatophore and the supposed pyre- 
noid. F—I, filaments with sporangial branchlets seen in profile, in G an emptied sporangium, in Fa new 
sporangium is formed besides an emptied one. A—B 290:1, C—I 610: 1. 
this little species was found rather abundantly, growing in the outer wall close 
within the cuticle but never penetrating into the radial walls between the pericen- 
tral cells. The filaments are very thin, the cells very thin-walled, usually 3—5 dia- 
meters long; they were in the dried specimens, the only ones I examined, uni- 
formily rose-coloured and seemed to contain a parietal chromatophore occupying 
the greater part of the periphery of the cell. In the middle or somewhat over 
D. K. D. Vidensk. Selsk. Skr., 7. Række, naturvidensk. og mathem. Afd. VII. 1. 17 
