798 SOME NEW AND RARE HYDROIDA IN THE AUSTRALIAN MUSEUM, 



Fig. 6-7. Thuiaria subarticulata, hydrothecse, more enlarged. 



Fig. 8. ( = Sertularia fertilis, v. Lend.) with all 



the calycles except one broken away, x 25. (From Dr. von Len- 

 denfeld's type). 



Fig, 9-10. T. sinuosa, n.sp. Port Molle. x 25. 



PLATE XIX. 



Fig. 1-4. Azygoplon productum, Bale. Various forms of hydrothecae. x80. 



Fig. 5. ,, adnate gonotheca. x 25. 



Fig. 6. Plumularia alata, n.sp. x80. 



Fig. 7-10. xl!2. 



Fig. 11. spinulosa, Bale, variety from Coogee. x80. 



Fig. 12-13. ,, gonothecse. x20. 



Fig. 14. ,, compressa, Bale, small variety, Botany. x80. 



Fig. 15-17. aurita, n.sp. Botany, x 80. 



Fig. 18-19. gonothecse. x20. 



PLATE XX. 



T?: i o I Plumularia campanula, Busk. 

 *ig. 1-2.- j ^ ru&ra, v. Lend. 



These figures apply equally to both species. 

 (From Dr. von Lendenf eld's type of P. rubra). x 80. 



Fig. 3. Plumularia campanula, female gonotheca. (From Dr. von Lenden- 

 feld's type P. Torresia. P. campanula, from Port Phillip Heads, 

 has exactly similar gonothecse). x 25. 



Fig. 4. Plumularia campanula and P. rubra, male gonotheca. (From Dr. 

 von Lendenfeld's type P. rubra). x 25. 



Fig. 5. Plumularia campanula and P. rubra, female gonotheca. (From 

 a N.S. "Wales specimen of P. campanula}, x 25. 



Fig. 6. Plumularia campanula and P. rubra, male gonotheca. (From 

 same as last), x 25. 



Fig. 7. Plumularia setaceoides, Bale. Lax variety, with thickened cell- 

 wall, x 80. 



Fig. 8. Plumularia setaceoides. Small variety, much thickened, x 80. 



