Chap. VI. TABULAR VIEAV. 



175 



5th Fcamily. Lucernariad.e Jolimt, Brit. ZoOph., 2d edit., 1847, p. 244 (not 

 Iluxiey, who, ten years later, appHed the name Lucernariadjie 

 to the whole order of Discophoraj). — Caljcozoa Lcuch., Mor- 

 phologie und Verwandtsch. der Wirbellosen Thiere, 1848. — 

 Podactinaria M.-Edio. and Haime, Brit. Foss. Corals, 1850. 



This family bears the same relations to the Marsupialidse 

 as the Comatulidte do to the Pentacrinidoe. The Lucernariadse 

 are pedunculated Discophor*. 

 Lucernaria MM. As characterized by the illustrious author of the 

 Fauna danica, this genus still embraces several distinct types; 

 all of which, however, agree in having eight bunches of ten- 

 tacles, alternating, in some of the species, with short, simple 

 tentacles. These simple tentacles resemble, in their appear- 

 ance, the ocelli of the Marsupialidoe, as the fasciculated tenta- 

 cles recall those of the genus Chiropsalmus, of the same family ; 

 thus showing, in another way, the homological relations which 

 exist between the tentacles and the marginal organs of all 

 Acalephs, described as ocelli and otolithes. Long associated 

 with the Polyps, this family at last seems to be referred 

 to its true position, by the side of the free-moving Haplo- 

 stomeae, to which they bear the same relation as the pedun- 

 culated Crinoids to the genus Comatula. Allman, who has 

 correctly traced their homologies, refers them, however, to the 

 Hydroids. As I have had no opportunity of comparing the 

 American with the European species with which they have 

 been identified, I must leave it doubtful whether they are 

 the same or not. To the genus Lucernaria proper, I refer 

 only the species in which two and two bunches of tentacles 

 are approximated, without simple tentacles. 

 L. quadricornis J/«7/., Zool. Dan., PI. 39, figs. 1-6; Sars, Fauna littor., 

 PI. 3, figs. 1-7; Johnston, Brit. Zooph., PI. 15, figs. 3-7. — L. 

 fascicularis Fkm., Wern. Soc. — Scotland, Shetland (Fleming) ; 

 German Ocean (0. F. Miiller) ; Nonvaij : Florae and Kind Islands. 

 Bergen (Sars) ; Donaghadee, Ireland (Templeton) ; Grand Manan, 

 Nova Scotia (Stimpson) ; Chelsea Beach and Swampscott Beach, 

 near Boston (Dr. A. A. Gould and L. Agassiz) ; Greenland (Fab- 

 ricius). The shortness of the arms and the thickness of the 

 body of the American specimens inchne me to the belief 

 that they differ from those of Europe. 



