Fig. 1. LhujuUna seminuda. 

 2. Lingulina seminuda. 

 3-5. Lingulinn hUocuU. X200. Front views. After Heron-Allen and 



Earland. 

 6,7. LingiiUna bicarinata. X200. Front views. Figure 6. by transmit- 

 ted light. After Heron-Allen and Earland. 



196 



