161 



the medulla. The carpogonial branch is five-celled, the auxiliary-cell branches are 

 curved, and composed of a great number of short cells (fig. 77). Ripe cystocarps 

 have been met with in March. — Anlheridia have not been met with. 



The species is distributed in the Skagerak, in the northern and eastern Kattegat 

 and in the northern part of the Sound. In the Skagerak it does not attain the 

 same dimensions as in the Kattegat, its length scarcely exceeding 30 cm, probably 

 owing to the more agitated water. It has here only been met with at compara- 

 tively slight depths, viz. 4 to 9,4 m. In the Kattegat it is mainly distributed in 

 the eastern part, where it has been met with almost only at depths of 16 m or 



Fig. 76. Fig. 77. 



Dilsea editlis. A, six sporangia showing various forms and modes of Dilsca ediiUs. A, carpogonial branch. B 

 division. 220:1. C, transverse section of cortex with a sporangium. 390:1. auxiliary-cell branch. .390:1. 



deeper, where the salinity is high and little variable and the variations of tempe- 

 rature are also relatively small; it attains here its greatest size. — In most localities 

 it is taken on\y in small quantities in the dredge; I have found it most abundantly 

 at Hanstholm (Sk), where it was dominant in some places at 7,5 meters depth. 

 Lyngbye found it ofl" Gilleleje on the North coast of Sealand, 12 miles from land 

 at 26 meters depth, abundantly in places where other algae are not met with, but 

 only Mytili and other molluscs, barnacles etc. It was here often fixed to the mytili 

 and attained a size of up to 63 cm ; the fishermen called it here "rode Klude" 

 (red rags). 



Localities. Sk : YT off Hanstholm lighthouse, 7,5 met., rather abundantly; Thorup Strand, 

 washed ashore (C. M. Poulsen); Lokken, washed ashore, FK Kongshoj Grund off Lonstrup, 8,5 met.; 

 NW of Hirslials, ,30 met., some fragments (A. C. Johansen); west side of Hirshals mole, 4 met., washed 

 ashore by Lenstrup and Hirshals, Tvsersted (V. Schmidt) and Skagen. — Kii: Herthas Flak, 20—22 met., 

 6 cm long; Hirsholmene, 5,5—7,5 m, 6 cm long; Nortii of L;6S0 (Edv. Bay), 29 cm long; IX, 11 m; TR near 

 Trindelen, 2:i,5 m. — Ke : Fladen, ZF, 22,5 m, and IQ, 22—30 m; south side of Groves Flak (Borgesen) ; 



1). K. U. Viik'iisU. Selsk. Slvi-., 7. liri liUo, iuilur\ iilcMisk. (ik iiKitlieiii. Alil. 2. 21 



