Plate 37. 



Fig. 1. Eucheilota duodecimahs. Immature female, with only 4 lithocysts. 



Agassiz Laboratory, Newport, Rhode Island, September 19, 1896. 



See page 283. 

 Fig. 2. Eucheilota duodecimalis. Mature female, with 12 lithocysts. Agassiz 



Laboratory, Newport, Rhode Island, September 7, 1895. 

 Figs. 3 to 3". Eucheilota paradoxica. Producing medusa-buds upon its 



gonads. Figure 3', medusa-bud about to be set free from the 



gonad of the parent medusa; figure 3", section of the gonad and 



budding medusa. Tortugas, Florida; and Nassau, Bahamas, 



June 1899, 1903. See page 285. 

 Fig. 4. Eucheilota bermudensis, young medusa. Tortugas, Florida. June 



17, 1899. See page 282. 

 Fig. 5. Eucheilota ventricular is, young medusa. Tortugas, Florida. June, 



1899. See page 282. 

 Fig. 6. Blackfordia virginica, mature medusa. Hampton Roads, Virginia. 



October 31, 1904. For details see figures 3 to 5, plate 36. 



Drawn from life, by the author. 



