MAYER: MEDUSiE FROM THE TORTUGAS, FLORIDA. 73 



PHYSALIA, Bosc, 1802. 



Physalia pelagica, Bosc. 



Salacia phisalus, Linne, 1756, Systema Naturse, p. 158. 



Holothuria physalis, Linne, 1767, Syst. Naturse, Ed. XII. p. 1090. 



Medusa caravella, Miiller, 0. F., 1776, Besch. Berlin Gesell. Natur. Freunde, Bd. 



IL p. 290, Taf. IX. Fig. 1. 

 Arethusa crista subrubella venosa, Browne, P., 1789, Nat. Hist. Jamaica, p. 386. 

 Physalia pelagica, Bosc, L. A. G., 1802, Hist. Nat. d. Vers., Tom. II. p. 168. 

 Physalis arethusa, Tilesius, W. G., 1812, Krusenst. Reise, p. 91, PI. XXIII. Figs. 



1-6. 

 Physalia caravella, Eschscholtz, F., 1829, Syst. der Acalephen, p. 160, Taf. XIV. 

 Physalia aurigera, McCrady, J., 1857, Gymn. Charleston Harbor, p. 74. 

 Physalia Olfersii, Quatrefages, A. de, 1854 ; Ann. des Sci. Nat., Ser. 4, ZoiJI., Tona. 



II. p. 112, PI. Ill Figs. 1-9; PI. IV. Figs. 1, 2. 

 Caravella maxima, Haeckel, E., 1888, Siphonophorjc, Challenger Report, Zoul., 



Vol. XXVIIL pp. 313, 338, 352, PI. XXVL Fig. 8. 

 Physalia maxima. Goto, S., 1897, Journ. Coll. Sci. Imperial Univ., Tokyo, Japan, 



Vol. X. Part IL p. 175, Taf. XV. Figs. 1-12. 



This large Siphonophore is frequently seen throughout the year floating past 

 the Islands of the Tortugas, Florida, and a southerly breeze is almost sure to 

 strand large numbers of them upon the beaches. The animal is found all over 

 the Tropical and Subtropical Atlantic. It is carried by the Gulf Stream to 

 the shore of Europe, and is often found in the Mediterranean near the Straits 

 of Gibraltar. It appears, however, not to be permanently established in the 

 Mediterranean. During the latter part of the summer this Siphonophore is 

 quite common along the southern coast of New England, and individuals have 

 been found as far north as the Bay of Fundy. 



SPH^RONECTES, Huxley, 1859. 

 Sphaeronectes gracilis, Haeckel. 



Fig. 89, Plate 27. 



Monophyes gracilis, Claus, C, 1874, Schrift. Zool. Inst. Wien, II. Die Gattung 



Monophyes, p. 29, Taf. IV. Figs. 8-14. 

 Spha;ronectes inermis, Fewkes, J. W., 1880, Bull. Mus. Comp. Zool. at Harvard 



Coll., Vol. VI. p. 143, PI. II. Fig. 6. 



This Siphonophore is abundant in the Mediterranean and Tropical Atlantic. 

 It was found throughout the winter by Chun in the Canary Islands, and sev- 

 eral specimens were found by us at the Tortugas, Florida, in July, 1898. A 



