350 
It has been found in the sublittoral zone down to a depth of 
25 fathoms along exposed as well as sheltered shores, and grows 
in the shells of various animals, e. g. Modiola, Solen, Cyprina , Buc- 
cinum, Serpula, etc. 
It is fairly common along the coasts of the Faeroes and has been 
found in the following localities: — Bordo: Kvannesund (H. J.); Ost: 
Strsender (H. J.); Str.: Thorshavn (!), Vestmanhavn (!), Gliversnses (!); Syd. 
Trangisvaag (H. J.). 
II. Florideae. 
Order HELMINTHOCLADIACEAE. 
CHANTRANSIA (Dec.) Schmitz. 
8. C. secundata (Lyngb.) Thur. Le Jolis, Alg. mar. de Cherb., p. 106. 
Callithamnion Dawiesii 0 secundatum Lyngb., Hydrophyt., p. 129; 
Trentepohlia Daviesii Pringsheim, Beitrage zur Morphologie der 
Meeres Algen (Aus den Abhandl. d. Konigl. Academie der Wissensch. 
zu Berlin 1861, p. 351, tab. XXII, figs. 1—6). 
Fig. 51. Chantransia secundata (Lyngb.) Thur. a, one larger plant and one quite young on Ceramium acan- 
thonotum; b, young plant; c, portion of plant showing branches mostly opposite. 100: l. 1 
This small alga, first described and figured by Lyngbye, 1. c., 
is more particularly characterized by its small basal disc, which 
often even in young plants consists of several layers of cells, (see 
Pringsheim’s figs. 1—6), as well as by its secund branches, which 
however, especially in older plants become opposite. But as stated 
below under Ch. virgatula , Ch. secundata comes very near to the 
former 2 . 
It is an extremely common epiphyte on several algae between 
tide-marks, and often forms a close covering on the host plant. It 
1 Throughout this paper all the figures denoting scale are approximate. 
2 Since writing the above I found in my Cladophora material a few specimens 
of the present species bearing tetraspores, the plants occurred on a Cladophora 
rupestris from Hojvig, gathered May 4th 1898. The tetraspores were about 21 u 
long and 16 u broad. 
