118 NATURAL HISTORY OP 



varnished colour, and from the closely packed and 

 crowded character of the calycles appears to be quad- 

 rangular. The calycles, instead of being placed on the 

 face of the branch, as in Sertularia, are inserted in the 

 side. The gonothecee are pyriform and borne as in 

 the preceding genus. 



Genus V. Hydeallmania, Hincks. 



Zoophyte plant-like. Stem bearing plumous branches, 

 jointed, rooted by a filiform stolon. Hydrothecve uni- 

 lateral, arranged in distinct companies, each of which 

 occupies an internode. Gonothecce scattered, with a 

 simple, inoperculate aperture. — T. H. 



1. H. falcata, Linn. Plate VIII. fig. 3. 



Sertularia falcata {Linn., Pall., E. and 8., Bosc, 

 Berk., Turt., Stew.), Aglaophenia falcata {Lamx.)., 

 Plumulaire en faux [De B.), Plumularia falcata {Lamk.y 

 FUm., Grant, Temio., Daly ell, G. J., R. Q. G., P. E. G., 

 D. L., McA.), Pennaria falcata {Olien). 



Hab. : Common. Height 1 foot and upwards. 



This widely distributed but graceful zoophyte, to 

 which Ellis gave the name of " Sickle Coralline,'' 

 rises from a root-like stolon by a spirally twisted dark 

 brown stem, regularly jointed at intervals, from which 

 branches are given off above each joint, which branches 

 bear calycles and alternate pinnse. These pinnae bear 

 calycles on one side only, which are pressed together 

 so as to appear as if overlapping. The pinnae are 

 regularly divided into internodes, each of which bears 

 5 to 7 calycles. The branches when dried curl up into 

 the form of a sickle, whence the name given by Ellis. 

 In the frontispiece to Elhs's " Corallines '' is a curious 



