BY R. VON LENDENFELD, PH.D. 633 



3. Sub-family Aegininai 

 69. Genus yEginura 



231. A. myosura. Haeckel. 



4. Sub-family Solmarinae 



EXPLANATION OF PLATES. 



Plate XX. 

 Fig. 31. — Sarsia radiata, adult Medusa, 1:20. 

 Fig. 32. — Two Hydranths of Sarsia radiata, 1:20. 



Plate XXI. 

 Fig. 33. — Euphysa australis, adult Medusa, 1:20. 

 Fig. 34. — Sarsia minima, young Medusa, 1:30. 

 Fig. 35. — Sarsia minima, Polyp colony, 1:6. 



Plate XXII. 

 Fig. 36. — Turritopsis lata, the adult Medusa, 1:30. 



Plate XXIII. 

 Fig. 37. — Tiaropsis Macleayi, the adult Medusa, 1:7. 

 Fig. 38. — Lizusa prolifera, the adult Medusa, 1:10. 



Fig. 39. — Lizusa prolifera, mouth, Radial Canal and Tentacle-bunch seen 

 from below, 1:30. 



Plate XXIV. 



Fig. 40. — Pennaria rosea, a terminal Hydranth, 1:30. 

 Fig. 41. — Pennaria rosea, Polyp colony, natural size. 

 Fig. 42. — Pennaria rosea, female Medusostyle, 1:25. 



Plate XXV. 

 Fig. 43. — Pennaria Adamsia, female Medusostyle, 20:1. 

 Fig. 44. — Pennaria Adamsia, male Medusostyle, 20:1. 

 Fig. 45. — Pennaria Adamsia, Polyp colony, natural size. 

 Fig. 46. — Pennaria Adamsia, longitudinal section through the base of a 



Hydrocaulus, 1;50. 

 Fig. 47. — Pennaria Adamsia, a pinna, 1:6. 

 Fig. 48.— Transverse section through a filiform tentacle, T Oe II. 



