310 ' ENDEAVOUR SCIENTIFIC RESULTS. 



Aglaophenia divaricate, Kirchenpauer, Abh. Nat. Ver. 

 Hamb., v., 1872, p. 26. Id., Bale, Cat. Austr. Hydr. 

 Zooph., 1884, p. 162, pi. xv., fig. 8, pi. xvii., fig. 7 ; Id., 

 Bale, Trans, and Proc. Roy. Soc. Viet., xxiii., 1887, 

 pp. 97, 110; Id., Bale, Biological Results "Endea- 

 vour," ii., 1, 1914, p. 49. Id., Marktanner-Turner- 

 etscher, Ann. K. K. Hofmus. Wien, v., 1890, p. 267. 

 Id., Billard, C. R. Acad. Sci., cxlviii., 1909, p. 368 ; 

 Id,, Billard, Ann. Sci. Nat., Zool., (9), xi., 1910, p. 54. 

 Id., Ritchie, Mem. Austr. Mus., iv., 16, 1911, p. 866. 

 Id., Briggs, Proc. Roy. Soc. N.S. Wales, xlviii., 1915,. 

 p. 315. 



Plumularia ramosa, Busk, Voy. " Rattlesnake," i., 1852, 

 p. 398. 



Aglaophenia ramosa, Kirchenpauer, Abh. Nat. Ver. Hamb., 

 v., 1872, p. 38, pis. i., ii., fig. 17. Id., Hincks, Pop. 

 Sci. Review, xiii., 1874, p. 235. Id., Bale, Cat. Austr. 

 Hydr. Zooph., 1884, p. 164, pi. xviii., figs. 15, 16. 



Lytocarpus ramosus, Allman, Journ. Linn. Soc., Zool., xix., 



1885, p. 154, pi. xxv., figs. 1-3. 

 ? Aglaophenia brevicaulis, Kirchenpauer, Abh. Nat. Ver. 



Hamb., v., 1872, p. 41, pi. i., fig. 20, pi. v., fig. 19. 

 Not Aglaophenia ramosa, Allman, Mem. Mus. Comp. Zool. 



Harv., v., 1877, p. 39, pi. xxiii., figs. 1-4. 



Hydrophyton slender, polysiphonic, attaining four or five 

 inches in height, much branched, branches widely divergent 

 on all sides, more rarely in one plane, springing from the 

 supplementary tubes. Hydrocladia alternate, one on each 

 internode, both series directed towards the front, and rising 

 at an angle of about 40-45 degrees ; nodes slightly oblique. 



Hydrothecse cup-shaped, set at an angle of 40-45 degrees ; 

 a narrow intrathecal ridge about the middle of the adcauline 

 side, with a slight fold from it partly surrounding the hydro- 

 theca ; hydropore very large ; border with four teeth on 

 each side, and a long incurved one in front, back adnate. 

 Hydrothecal internode with a strong curved septal ridge in 

 the middle. 



Mesial sarcotheca variable in length, projecting at a wide 

 angle, adnate to the hydrotheca as far as the margin and 

 mainly rising from it, free part tapering in lateral view, 

 tapering or not in front view, with distinct terminal and 

 inferior apertures, and an orifice opening into the hydrotheca, 

 Lateral sarcotheca? more or less conical, adnate up to the 

 hydrotheca-margin, with a short free part directed forward ; 



