PLATE I. 



FIG. 1. Rossella antarctica Carter, Specimen A. Nat. size. (Page 5.) 



FIG. 2. Rossella antarctica, Specimen B. nat. size. (Page 7.) 



FIG. 3. Rossella antarctica, Specimen C, vertical section. nat. size. (Page S.) 



FIG. 4. Rossella antarctica, Specimen C, vertical section showing the other half. -/V nat. size. 



