angia were found to be 19—30 long, 6—7 4 broad; the normal length of the fully 
ripe sporangia is probably nearest the upper limit indicated. The sporangia have 
thus the same length as those of H. prototypus, but are narrower. 
Zonate sporangia, divided by transverse walls, were described and figured in 
Hildenbrandia rubra Harvey in Phycol. Brit. pl. 250, 1851; but it is rather probable 
that this figure really represents H. prototypus, as it shows the same shape of the 
Fig. 126. 
Hildenbrandia Crouani. Vertical sections of conceptacles. 560:1. 
sporangia as in this species, and the pretended zonate division might then be due 
to an inexact observation of the irregularly divided sporangia. 
Zonate sporangia have further been described in H. prototypus var. kerguelensis 
ASKENASY (Forschungsreise S. M. S. Gazelle. Botanik, Berlin 1888 p. 30), the sporangia 
of which are said to be cylindric and divided by exactly parallel walls in 4 parts. 
As nothing is said with regard to the direction of the walls it must be presumed 
that they are transverse. It otherwise differs from H. Crouani by its conceptacles 
being up to 200 „ high but only half as broad, while those of H. Crouani are broader 
than high. 
Locality. Lb: Opposite to Middelfart, 15—19 m, July 1900. 
Fam. 9. Corallinaceæ. 
J. ARESCHOUG (1852), Corallineæ in J. G. AGARDH, Spec. gen. et ord. Alg. Vol. II pars 2. 
M. Foszie (1891), Contribution to Knowledge of the Marine Algæ of Norway. II. Tromsø Museums 
Aarshefter. 14. 
— (1895), The Norwegian Forms of Lithothamnion. D. kgl. norske Videnskabers Selsk. Skrifter. 1894. 
Trondhjem. 
— (1898 I), Systematical Survey of the Lithothamnia. 
— (1898 Il), List of Species of the Lithothamnia. Ibid. 1898, No 3. 
