PHTSALIA ARETHUSA. 



215 



of Hydrse and of Medusae (Figs. 352, 353, 354) are introduced 

 here. 



Fig. 352. 

 Fig. 353. 



Charleston (McCrady) ; Gulf of Mexico (Brown, Sloane) ; Florida 

 (L. Agassiz) ; Cape Cod (A. Agassiz) ; Martha's Vineyard (W. H. 

 Forbes), v- ■-.: . . ^ 



Cat. No. 305, Florida, 1850, L. Agassiz. 



Cat. No. 306, Florida, 1850, L. Agassiz. 



Cat. No. 307, Florida, 1850, L. Agassiz. 



Cat. No. 308, Key West, Fla., February, 1858, L. Agassiz. 



Cat. No. 309, Key West, Fla., March, 1858, L. Agassiz. 



Cat. No. 310, Tortugas, Fla., February, 1858, L. Agassiz. 



Cat. No. 311, New Providence, Bahamas, April, 1861, F. G. Shaw. 



Cat. No. 312, Mobile, Alabama, L. Agassiz. 



Cat. No. 313, 40° N. Lat., 60° W. Long., Captain W. H. A. Putnam. 



Cat. No. 314, Naushon, Mass., 1861, W. H. Forbes. 



Cat. No. 325, Tortugas, Fla., March, 1858, L. Agassiz. 



Cat. No. 385, Beaufort, N. C, May, 1863, A. S. Bickmore. 



Cat. No. 386, Bermudas, A. S. Bickmore. 



Museum Diagram, No. 28, after L. Agassiz. 



Fig. 352. Bunch of single Hydrse, and clusters of Medusae, of Phjsalia AretLusa Til. 6, 6, 

 Hydrse, with their tentacles, c, c ; d, d, bunches of tentacles. 



Fig. 353. Bunch of Hydrae. a, hoUow base of attachment communicating -with air-sac ; 6, h, b, 

 single Hydrse ; c, c, tentacles. 



Fig. 354. Bunch of MedusEe in various stages of development, a, hollow base of attachment ; 

 6, Hydra ; d, d, Medusse buds. 



