542 Dr. W. II. H^ujvey's Account of the Marine Botany of 



104. Dasya Gunniana, Harv. Ner. Austr., t. IT. On the reef called " The Natural Jetty," Rott- 



nest(211). 



105. Dasya. clonjaia, Sond. Abundant at Fremantle, and Rottnest, and King George's Sound (59). 



106. Dasta Cliflotn, n. sp.; caule elongate (pedali et ultra) tenui flexuoso v. scandente glabro 



omnino corticato subdistiche ramoso bi-tripinnato, pinnispatentibusglabris; pinnulis alter- 

 nis remotiusculis ramellosis ; ramellis multoties divaricato-dichotomis vix attenuatis obtusis 

 monosiphoniis, articulis cylindraceis, diametro 3-4-plo-longioribus. Dredged in Fremantle 

 Harbour, by G. C'LirroN, Esq., after whom this beautiful plant is deservedly named. I also 

 collected it at Garden Island and Rottnest, and afterwards at King George's Sound (164). 



107. Dasya frutescens, n. sp. ; caule (2-4 unciali) vage ramosissimo glabro corticato; ramis quo- 



quoversum directis patentibus bis-terve divisis attenuatis, minoribus ramellis vestitis; ra- 

 mellis pluries dichotomis vix attenuatis obtusis, segmentis falcato-recurvis v. incurvis, ar- 

 ticulis diametro 2-3-plo-longioribus ; ceramidiis sessilibus urceolatis ore porrecto ; stichidiis 

 minutis sessilibus oblongis acutis. Rottnest, on Zostera. Something like a small form of 

 D. elongata, but with much more slender and longer jointed ramelli. It is perhaps nearer 

 to D. arbuscula, with which, however, it does not agree (303). 



108. Vasya proxhna, n. sp. ; fronde crassa corticata vage ramosa; ramis elongatis virgatis simpli- 



cibus vel ramos 2-3 consimiles lateraliter ferentibus, ramis omnibus ramulos breves quo- 

 quoversum emittentibus; ramulis corticatis simplicibus v. iterum ramosis, junioribus 

 ramellis vestitis; ramellis subverticillatis dichotomis e basi lata conspicue attenuatis, axillis 

 patentibus, apicibus filiformibus obtusis, articulis diametro 3-4-plo-longioribus; ceramidiis 

 ramulos primaries terminantibus urceolatis ore brevi prominulo. Cast ashore at Middletou 

 Bay, King George's Sound, August. Nearly allied to D. elonyata, but the ramelli are very 

 different, quickly melting in fresh water. It is a much larger plant than D. naccarioides, 

 with larger ramelli and longer joints (336). 



109. Dasya collabens, Harv. Ner. Austr., t. 21. King George's Sound, rare (o8). 



110. Dasya Wrangelioides, n. sp. ; caule gracili (2-3 unciali) pellucide articulate 10-1 2-siphonio 



distiche ramoso omnibus partibus ramellis vestito; ramis patentibus sursum curvatis sim- 

 plicibus V. iterum alterne ramosis; ramellis densissimis multoties divaricato-dichotomis 



acutis, articulis diametro sesquilongioribus ; ceramidiis ; stichidiis minutissimis 



ovato-acuminatis. Parasitical on Canlinia antarctica. Fremantle, King George's Sound, 

 and Cape Riche. A very distinct species, named from its external resemblance to Wran- 

 gelia vdutina (272). 



111. Dasya multiceps, n. sp. ; caule subnuUo (fere bulboso !) mox in ramos numerosissimos erectos 



diviso; ramis (2-3 uncialibus) simplicibus pellucide articulatis, articulis diametro subbre- 

 vioribus polysiphoniis, pinnatis v. apice bipinnatis, ambitu linearibus v. lineari-spathulatis; 

 pinnis oligosiphouiis alternis approxiraatis brevissimis superioribus sensim longioribus ra- 

 mellosis ; ramellis alternis pluries dichotomis parum attenuatis obtusis. On sand-covered 

 rocks, half buried in sand, on the Natural Jetty reef, Rottnest, June. The specimens are 

 not in fruit, and probably but half grown. There is an evident tendency in the upper 

 pinna; to lengthen and become compound (25 1 ). 



