20 " ENDEAVOUR " SCIENTIFIC RESULTS. 



GENUS SERTULARELLA, Gray. 



SERTULARELLA DIVARICATA (Busk.) 



(Plate ii., figs. 19.) 



Sert'ularia divan' cata, Busk, Voy. Rattlesnake, 1852, p. 388. 



Sertularella divaricata, Bale, Cat. Austr. Hyd. Zooph., 

 188*, p. 110, pi. iii., fig. 9, pi. xix., fig. 20; id. Proc. 

 Linn. Soc. N. S. Wales, (2), iii., 1888, p. 761, pi. xvi., 

 figs. 1 2 (var. dnlia}, p. 761, pi. xvi., figs. 3 4 

 (vav. subdichotoma) ; Schneider, Zool. Jahrb, 10, 1897, 

 p. 525; Hartlaub, Abh. Nat. Ver. Hamb., xvi., 1900, 

 pp. 23, 27, 38, pi. iii., figs. 1520; Ritchie, Mem. 

 Austr. Mus.. iv., 1911, p, 839 (var. s'UbdicJiotoma) . 



Sertularella subdichotoma, Kirchenpauer, Abh. Nat, Ver. 

 Hamb., viii., 1884, p. 46, pi. xvi., figs. 1 Ib ; Hartlaub, 

 Abh. Nat. Ver. Hamb., xvi., 1900, p. 3338, pi. i., figs. 3, 

 4, 69, 1116, pi. ii., figs. 1017, 5152, pi. iii., figs. 3, 

 4, 13, Ii; id. Voy. " Belgica," 1904, p. 6 ; id. Zool Jahrb., 

 Suppl. vi., Band iii., 1905, p. 629, figs. V s , W 3 ; Jaderholiu, 

 Arkiv for Zoologi k. svenska Vetenskapsakad., i., 1903, p. 

 278, ii., 1904, p. 3, vi., 1910, p. 4; id. Schwed. Siidpolarexp., 

 19013, vi., 1905, p. 25, pi. ix., fig. 8 ; Nutting, Amer. 

 Sertularidae, 1904, p. 96, pi. xxii., figs. 8 12; Vanhoffen, 

 Deutsche Siidpolarexp., 1901 3, xi., Zool. iii., 1911, p. 

 326, fig. 41 a e. 



Sertularella Jolmstoni, Bale, Cat. Austr. Hyd. Zooph., 1884, 

 p. 109 (in part), pi. iii., fig. 7, pi. xix., fig. 21 ; i<1. 

 Trans, and Proc. Roy. Soc. Viet., xxiii., 1887, p. 93 

 (in part); id. Proc. Roy. Soc. Viet., vi., N.S., 1893, 

 p. 102; Billard (in part), Ann. Sci. Nat. (9), xi., 1910, 

 p. 13. 



(NotSertnlaria Johnston!, Gray, Dieff. N. Zealand, ii., 1843 

 p. 294). 



Hydrocaulus monosiphonic, pinnate or bipinuate, or with 

 irregular subdichotomoias ramification ; the more regular forms 

 with the pinnae alternate, three hydrotheca? between every two 

 pinna? on the same side. 



Internodes of the stem usually bearing from one to three 

 hydrotheca? ; those of the pinnae generally bearing only one each, 

 but in some varieties often having more than one, especially on 

 the proximal portions of the pinnae. Many of the pinna? 

 terminating in long twisted tendrils, which may become attached 

 to other parts of the polypidom. 



