Plate 38. 



Figs. 1 to 1". Eucheilota vcntricularis, mature female. Figure 1', oral view 



of the same medusa; figure 1", one of the marginal lithocysts. 



Hampton Roads, Virginia, November 3, 1904. 

 Fig. 2. Eucheilota bermudensis, immature medusa. Tortugas, Florida, 



June 18, 1899. 

 Fig. 3. Eucheilota bermudensis, mature female. Tortugas, Florida, June 



19, 1899. 

 Figs. 4 and 4'. Eirene variabilis. Figure 4', lithocyst of the same medusa. 



Charleston Harbor, South Carolina, September 9, 1897. 



Drawn from life, by the author. 



