MAYER: MEDUSA FROM THE TORTUGAS, FLORIDA. 71 



Charybdea punctata- 



Tamoya punctata, Fewkes, J. W., 1883, Bull. Mus. Comp, Zool. at Harvard Coll., 

 Vol. XI. p. 84, Figs. 4-6, PI. I. 



A single young medusa of this species was found at the Tortugas, Florida, 

 on May 24, 1899. It was very nearly in the same state of development as the 

 medusae described by Fewkes, 1883, from the Bermuda Islands. The adult 

 medusa has not been found. 



CASSIOPBA, Peron and Lesuecr, 1809. 

 Cassiopea frondosa, Lamarck. 



Medusa frondosa, Pallas, P. S., 1774, Spicilegia Zoulog., Fasc. X. pp. 29, 30, PI. 2, 



Figs. 1-8. 

 Cassiopea frondosa, Lamarck, J. de, 1817, Hist. Nat. Anim. sans Vert., Tom. II. 



p. 512. 

 Cassiopea pallasii, Peron, F., et Lesueur, C. A., 1809, Tableau des Meduses, p. 357, 



Nr. 85. 

 Polyclonia frondosa, Agassiz, L., 1860, Cont. Nat. Hist. U. S., Vol. III. Pis. 13, 13*. 



This medusa is very abundant at the Tortugas and along the Florida Reefs 

 early in the spring, but is not seen during the summer months. 



III. SIPHONOPHOE^. 



VELELLA, Boso, 1802. 



Velella mutica, Bosc. 



Medusa velella, Linne', 1767, Systema Naturae, Ed. XII. p. 1098. 



Velella mutica, Bosc, L. A. G., 1802, Hist. Nat. d. Vers., Tom. II. p. 158. 



Velella mutica, Agassiz, A., 1883, Mem. Mus. Corap. ZoiJl. at Harvard Coll., Vol. 



VIII. No. 2, p. 2, Pis. I.-VL 91 Figures. 

 Armenista mutica, Haeckel, E., 1888, Siphonophorae, Challenger Report, Zoiil. 



Vol. XXVIII. p. 84. 



This Siphonophore appears occasionally in great numbers at the Tortugas, 

 Florida, especially when southerly breezes drive the surface waters of the Gulf 

 Stream upon the Florida Reefs. It is common among the Bahama Islands and 

 along the Cuban coast, and isolated individuals are often carried far to the 

 northward by the Gulf Stream, specimens having been taken in Newport 

 Harbor, Rhode Island. 



