PLATE X 



Fig. i. Camptoplites bicornis var. compacta (Kluge). St. 1652, Ross Sea. 



Fig. 2. Camptoplites bicornis var. magna (Kluge). St. 1652, Ross Sea. 



Fig. 3. Camptoplites bicornis var. quadriavicularisvzT.il. Type-specimen. 

 St. 160, Shag Rocks. Some of the larger avicularia, both long- 

 headed and round-headed, are visible. 

 All figures x c. 2. 



