EXPLANATION OF PLATE II. 



Gonotheciv of Sertularella divaricata (Busk), and allied 



forms ; x 40. 

 Fig. 1. Sertularella divaricata (Busk). Port Stephens. 

 Fig. 2, Sertularella divaricata, var. dubia, Bale. Bondi. 

 Fig. 3. Tlie same. 



Fig. 4. Sertularella divaricata, var. Port Phillip, 1890. 

 Fig. ■">. Sertularella divaricata, var. Hunter Group. 

 Fig. 6. Sertularella divaricata, var. subdickotoma, Bale, 



(= S. subdichotoma Kircheupauer.) 

 Fig. 7. Sertularella divaricata, var. Port Phillip. 1881. 



(= S. johmtoni, Bas-s Strait variety, Bale). 

 Fig. 8. Sertularella divaricata, var. Port Phillip, 1889. 

 Fig. '.'. Sertularella divaricata, var. Great Australian Bight. 

 Fig. 10. Sertularella johnstoni (Gray). New Zealand. 

 Fig. II. Sertularella pygmaa, Bale. Port Phillip. 



