Plate 5. 



W^^ 





Sk 





39. 



43- 



47. 



38. 



42. 



41. 



46. 



, V/ G R dpi Iluth so.et imp 



Antarctic tDiscoveryJ Exp 



CEPHALODISCUS NIGRESCENS. (Pigs. 23- 

 -30 &. 37-40), CEPIiALODISCUS HODGSON! . (Pigs, 31-36 &41-47) 



