"I 



ipound i>t' m.iii) units of Rhipidodesmis caespijosa, borne 

 on a common st.dk and 



Having onlj dried specimen of Callipsygma Wilsoni to examine, we are 



dier the peripheral ramifications are trulj flabellules (i. e. with all the 

 I in one plane) or whether they are complanatelj fa tigiate 

 arran fed in alternate planes, but flattened into pseudo-flabelli 

 is requisite for the determination of this point. 



il) once been collected, viz., one plant, al Port Phillip Heads near 

 : bj J. Brai ebridge Wilson, the finder, to J. G. Agardh for determination, 

 d in the Museum at Lund. Bul we have ;i 1hmh.1i of the original in the British 

 i. In fig. i 1 1 the entire plant is represented. 



icality lies just within the limits of the [ndian < >cean. 



g. Boodleopsis gen. nov. 

 r ,s. 147—152). 



Generic diagnosis. Plant minute, monosiphonous, forming green unralcified caes- 

 ifts or felted cushions, consisting of a main axis which divides below into very slender 

 ramifying rhizoids, and gradually tapers above and emits branches and occasionally a few 

 rhizoids at intervals; branches repeatedly dividing dichotomously or sometimes trifurcately or 

 verticillately, divaricately, at short intervals and in alternate planes, and forming an extensive 

 ramification : branchlets constricted at base, all loosely interwoven with their fellows and forming: 



- o 



a la.\ felt-work alter the fashion oi Boodlea coacta. 



1. Boodleopsis siphonacea n. sp. 



Ifdl'. I N 1 >i 1 Expedition. Stat. 86. Dongala Palos-bay, shore. n" 352! dried. — Stat. 91. 



Muaras-reef! in alcohol. 



Plant forming dense flattened cushions, 1 —5 cm. in width. Main axis rather concealéd 



l>v the felt-work of ramuli, about. 70 ( u in diameter ln-luw but varying irregularly, containing 



'1. walls (o 12 [i thick, pale brown, here and there finelj striate; lower branches descending 



and dividing into slender, laxly and dichotomously branched rhizoids about to u. thick; upper 



branches arising singly or in pairs at irregular intervals from the tapering main axis ; these 



ttedly dividing, sometimes at every joint, sometimes al intervals of two or 



tliree joints, in the manner stated above, do not taper but remain fairly uniform in diameter 



ramuli (or internodes between the joints) usually 100 — 150 u long, green or colour- 



contents or with scattered granules, thin-walled, straight, all constricted at 



ionally bearing a few (2 — 101 very short round prominences, sometimes emitting a 



ramulus. Figs. 147—152). 



little plant apparently grew on a muddy substratum on Muaras-reef (fig. 

 •ecimens are cleaner. In habit it resembles Boodlea coacta, luit is much 



