146 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY, 
Filippi, F. 
Sopra due Idrozoi del Mediterraneo. Mem. R. Acad. Sei. Torino, 9d ser. 
Vol. XXIII. pp. 375-383. 1866. Bleutheria. 
Forbes, Edw. 
Monograph of the British Naked-eyed Medus, p. 65. London, 1848. Sto- 
mobrachium. 
Herdman, W. A. 
Pentamerous Aurelia. Nature, Vol. L. No. 1996, p. 426. 1894. 
Hincks, T. 
British Hydroid Zoöphytes, p. 71. 1868. Clavatella. 
Hornell, J. 
Abnormalities in Halielystus (Lucernaria) octoradiatus. Preliminary Note. 
Natural Science, Vol. III. p. 33. 1893. 
Hornell, J. 
The Lucernarians as Degenerate Scyphomedus®. A Note upon the Phylogeny 
of the Order. Natural Science, Vol. III. p. 204. 1893. Haliclystus. 
Krohn, A. 
Beobachtungen über die Fortpflanzung der Eleutheria, Quatref. Arch. für 
Naturg., Jahrg. 27, Bd. I. pp. 157-172. 1861. 
Romanes, G. J. 
An Account of some New Species, Varieties, and Monstrous Forms of Medusæ. 
Jour. Linn. Soc., Vol. XII. p. 528. II. Vol. XIII. p. 190, Pls. XV. and 
XVI. 1874-76. Aurelia, Sarsia, Stomobrachium, Tiaropsis. 
Sorby, H. C. 
Symmetry of Aurelia aurita. Nature, Vol. L. No. 1298, p. 476. 1894. 
Unthank, H. W. 
Pentamerous Aurelia. Nature, Vol. L. No. 1295, p. 413. 1894. 
