TRANSLATIONS. 
On the genus Lucernaria, O. F. Mutier.* 
(Pl. XII.) 
Tue genus Lucernaria, which flourishes more peculiarly in 
the northern seas where it is represented by several species, 
has hitherto received less attention from zoologists than it 
has from systematic writers, and notwithstanding the various 
places it has occupied in systems of classification. 
Recently it appeared to have found a resting place among 
the polyps, but at present it has been compelled to abandon 
this for one among the Acalephe. As regards the anatomy 
of these curious creatures, we possess no important informa- 
tion beyond that furnished in the admirable description by 
Sars,t the figures by Milne-Edwards,{ and the comparison 
between their structure and that of the Anthozoa drawn by 
Frey and Leuckart.$ 
As the genus had for a long time greatly excited my 
interest, from its constituting a distinctly transitional form 
between the Anthozoa and Acalephz, I gladly seized the 
opportunity of studymg its anatomical structure afforded me 
at St. Vaast-la-Hogue, not far from Cherbourg, where I 
obtained two species, viz., L. octoradiata, Lam., and L. cam- 
panulata, Lamx., which were abundant on Zostera thrown up 
on the rocky shore from the deeper water. 
In the following pages 1 propose to consider, first, the 
structure of Lucernaria, and afterwards, its systematic 
position. 
§ 1—The Structure. 
In this section I shall first describe Lucernaria generally ; 
* “ Untersuchungen tiber niedere Seethiere.” Von Wilhelm Keferstein, 
M.D. (‘Zeitsch. f. wiss. Zool.,’ xii, p. 1, 1862.) 
+ * Fauna littor. Norvegie,’ ltes Heft, 1846. 
£ Cuvier, ‘ Regne animal. Zoophytes,’ pl. lxiii, fig. 1, 1849. 
§ ‘ Beitrage z. Kenntn. wirbell. Thiere,’ 1847. 
