42 RECORDS OP THE ArSTRALTAN Ml'SKI'M. 



bearing one sarcotlieca near base ; female, about, twice as long as 

 hydrothecfe and almost as broad as long, ovate, truncate, bearing four 

 sarcotlieca? near base, margin thickened, operculate." According to 

 measurements deduced from Mulder and Trebilcock's figures, the male 

 gonangium has a length of 075 mm., and a maximum diameter of 

 050 nun., while the female gonangium is 1-35 mm. in length, and 

 117 mm. in maximum diameter. 



Stem mternode, length 0-26-0-29 mm. 



Stem internode, diameter ... ... ... ... 008-010 mm. 



Hydroclade, length uptol-4mm. 



Hydroclade theoate internode, length 0-21-0-22 mm. 



Hydroclade intermediate internode, length... ... 008-012 mm. 



Hydrotheca, depth 0-22-0-2-i mm. 



Hydrotheca, diameter at mouth ... ... ... 23-0 24 mm. 



These measurements do not agree veiy closel}- with those deduced 

 from Mulder and Trebilcock's figure, but they coriespond with those of 

 Victorian examples in the Australian Museum collection. The specimen 

 from Lord Howe Island otherwise agrees with the same authors' 

 description of this i^are species. 



Remarh:<. — An examination of Whitelegge's slide listed as " Pluniu- 

 laria, sp. nov. P " from Loid Howe Island, shows it to be identical with 

 Plumularia bulei, Bartlett. 



Loc. — Middle Beach, Lord Howe Island. 



Distribntion. — Previously recorded only from the following localities 

 on the Victorian coast — Bream Creek, Geeloug ; Queeuscliff ; and Airey's 

 Inlet (Bartlett). 



PuLMOLARiA lU'SK'ii, Bale. 



FluDiular'ni hiifil-il, Bale, Biol. Res. " Endeavour," iii., 5, 1915, p. 296 

 (synonymy). 



Several specimens of this species were obtained, which do not differ 

 in any important paiticulai' from the type. The characteristic male and 

 female gonangia are present on some of the colonies. The male gonangia 

 aie small, and are borne on the hydrocladia. They ai'e ovate, with a 

 sarcotlieca at each side near the peduncle. The female gonangia are 

 large, about three to three and one-half times as long as the male 

 gonangia, and are borne on the stem. In the female gonangia the 

 sarcothecse are arranged in two series on the dorsal surface. Each series 

 generally consists of five or six sarcothecee ; the lowei- ones are fairly 

 evenly spaced, but towards the distal extremity the interval becomes 

 leduced, and the uppermost two are brought veiy close togethei'. 

 Besides the parallel series of sarcotlieca^, a single sarcotheca occupies a 

 median position near the summit of the gonangium. 



Villi evsions. — 



Gonangium (male), length ... ... ... ... 0-52-0-64 nun. 



Gonangium (male), maximimi diametei- ... .. 0-22-0-24 mm. 



Gonangium (female), hmgth ... ... .. rSO-l-QOmm. 



Gonangium (female), maximum breadth .. . 0-82-0-87 mm. 



Loc. — Middle Beach, Lord Howe Island. 



