296 ALGÆ ANTARCTIC. 
Near C. bombycina, but distinguishable by its greater 
straightness and rigidity, the angular curves, incrassations 
and radicles. "The incrassations are scarcely of the character 
of the inflations in Mr. Hassall’s genus  Vesiculifera." 
69. Conferva Sandvicensis, Ag? filis tenuissimis simplicibus 
longissimis in funiculos flavo-virides implicatos intertextis, 
articulis diametro duplo longioribus.—4g. Syst. p. 92. 
Has. Falklands, in rills of fresh water. 
Rope-like bundles 12-14 inches long. Filaments exceed- 
ingly slender, not more than one-third the diameter of those 
of C. rivularis, of which this species has very much the 
habit. Agardh's character of his C. Sandvicensis agrees SO 
well with our specimens that we think it probable our plants 
may prove the same. 
70. Draparnaldia? pusilla, Hook. fil. et Harv. ; filis pusillis 
densissime cæspitosis gelatinosis vage ramosiusculis flexu- 
osis, ramulis perpaucis simplicibus brevibus, articulis 
coloratis luteo-viridibus. 
Has. Falkland Islands, on the roots of an umbelliferous 
plant in fresh water. 
Filaments a quarter of an inch long, investing the roots 
on which they grow with a yellow, green down. The genus 
is somewhat doubtful; but we think it, at least, strongly 
allied to D. tenuis, Ag. which it resembles in miniature, but 
the ramuli seem deficient in the setaceous apices. 
71. Lyngbya fragilis, Hook. et Harv.; filis minutis fragilibus 
flavo-viridibus tortuosis implexis tenuissimis in stratum - 
tenue lutescens coherentibus, striis densissimis. 
Has. Falkland Islands, on a dead rabbit. : 
Threads about half the diameter of those of L. mu" alis, 
and exceedingly fragile. Stratum thin, somewhat shining, 
yellow green. 
72. Calothrix olivacea, Hook. fil. et Harv.; cæspite majus- 
culo intense olivaceo erecto, filis sub lente luteo-glaucis 
flexuosis in funiculos crispatos tenaces cohærentibus; PET 
totam longitudinem sepius connexis, nunc apice i 
plumosis, endochromate denso opaco vix striato. 
