BRITISH ZOOPHYTES. 115 



5. S. ABiETiNA, Linn. Plate VIII. fig. 2. 

 Dynamena abietiua (Flem.), S. sapinette {De B.), S. 



abietinula {Dal.). 



Hab. : Generally distributed. Height to 12 in. 



This species much resembles the preceding in habit. 

 It is, however, much coarser and larger in every way. 

 There are no internodes, and the calycles are more 

 distinctly alternate. They are described by Dr. John- 

 ston as " bellied at the base with a narrow, everted 

 neck and plain aperture, so as to resemble a Florence 

 flask. ^^ The mode of growth is peculiar. The ipain 

 stem as well as the pinnee bear calycles. The stem is 

 regularly bent at angles, from each of which spring 

 alternate branches or pinua3, which decrease in length 

 towards the apex. Here and there the pinuge are 

 much lengthened and become themselves pinnate, and 

 these secondary piunas are often again similarly 

 branched. These lengthened pinnee, conspicuous 

 amongst the smaller and simple ones, present a very 

 curious appearance. 



This species is the " Sea Fir " of Ellis (''Corallines/^ 



4). 



6. S. ARGENTEA, E. and S. Plate VII. fig. 2, 



S. cupressiua (in part), {Linn., Fall., Esper.), S. fas- 

 tigiata {Fabr.), Dynamena argentea {Flem.). 



Hab.: Generally distributed. Height 6 — 18 in. 



The beauty of this species cannot well be exagge- 

 rated. Ellis named it the '' SquirreFs Tail Coralline,^^ 

 and its gracefully curved and luxuriant growth could 

 hardly be suggested by a better name. The main stem 

 is of a dark brown colour regularly waved, giving off 

 at about equal intervals panicles of branchlets from 

 different sides of the stem. Two branchlets arise from 



I 2 



