24 



MEDUSAE OF THE WORLD. 



Pennaria disticha Goldfuss (European). 



( ?) Pennaria marina, IMPERATO, 1599, Dell' historia naturale libri ventoto, Napoli, p. 747. 



Pennaria cavoiini, SCHNEIDER, 1892, Jena. Zeitsch. Naturw., Bd. 20, p. 435, taf. 14, figs. 49-54 (histology). Du PLESSIS, 188 

 Mittheil. Zool. Sta. Neapel, Bd. 2, p. 147. PHTET, 1893, Revue Suisse Zool., tome i, p. 12, plate I, figs. 7-9. WEI 



, 1881, 



is- 



1903, 

 colonies). 



colonies). 

 Pennaria disticha) BEDOT, 1901, Revue Suisse Zool., tome 9, p. 459; tome 13, 1905, p. 96 (citation of papers to 1850). GOLD- 



fucc iSii-i T-Ian^hiirh t\e*r 7.rwil . 11 Hn 



FUSS, 1820, Handbuch der Zool., p. 89. 

 Pennaria symmetric a, CLARKE, 1879, Bull, Mus. Comp. Zool. at Harvard College, vol. 5, p. 240, plate I, figs. 2, 3. 



Pennaria , PEEBLES, 1903, Archiv. Entwickelungs-mech., Bd. 14, p. 55, fig. (regeneration). 



Sertularia fiennaria, DELLE, CHIAJE, 1841-44, Animali senza vertebra del Regno di Napnh, vol. 5, pp. 5, 17, plate 157, figs. 3, 



14, 15; Ibid., 1822, tav. 43. 



(tySertuIaria pennaria, LINN^US, 1758, Systema Naturae, edit. 10, p. 813. 

 Seriolara ftennaria, CAVOLINI, 1785, Mem. Polipi marini, Napoli, p. 134, plate 5. 

 Globiceps globator, HAECKEL, 1879, Syst. der Medusen, p. 40. 

 ( ?) Medusa, Euphysa globaior, LEITKART, 1856, Archiv. fur Naturgesch., Bd. 22, p. 28, taf. 2, fig. 4. 



Fin. i . Pennaria disticha, from nature, by the author, from specimens collected by Dr. Lobianco in the Bay of Naples. 

 A y hydrocaulus, natural size. B, terminal branches showing law of growth. C, terminal polypite. D and , hydranths 

 showing completely-annul.ited pedicels. 



