EXPLANATION OF PLATE II. 



Gonotheca; of Sertularella divaricata (Busk), aud allied 



forms ; x 40. 



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

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

 Fig. 3. The same. 



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

 Fig. 5. Sertnlarella divaricata, var. Hunter Group. 

 Fig. 6. Sertnlarella divaricata, var. subdichotoma, Bale, 



(= S. subdichotoma Kirchenpauer.) 

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



(= S. johnstoni, Ba^s Strait vai'iety, Bale). 

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

 Fig. 9. Sertularella divaricata, rar. Great Australian Bight. 

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

 Fig. 11. Sertularella pyymcea, Bale. Port Phillip. 



