LUCERNARIAD^E. 475 



marked the differences between it and C. viridis, described by Profes- 

 sor Allman in the Annals of Natural History, published on the 1st 

 of the same month, and when the July No. of the work appeared 

 containing figures of the species, they were so different from my spe- 

 cimen in the extremes of form represented, and which it was believed 

 it could not possibly assume, that it was submitted in a living state 

 to that gentleman's opinion, and considered by him as certainly 

 distinct in species from C. viridis. The differences, whether they 

 eventually prove to be specific or not, may be pointed out as existing 

 in the tentacula, those of the 3rd and 4th rows being more numerous 

 and regular than in C. viridis ; and however great its changes of 

 form, they are much less Protean than in that species (see figures of 

 C, viridis*). The colour is very different, but with our present 

 knowledge, I am unwilling to lay any stress on this. The habit of 

 enveloping the body in an adventitious covering, was never observed 

 in any of the numerous individuals of C. viridis that came under 

 Professor Allman's notice. These too were taken "near low-water 

 mark, in the pools left by the retiring tide," while both the speci- 

 mens of C. Allmani were dredged from a considerable depth, which 

 has already been particularized. The specimen taken in Belfast 

 bay being at once put by its captor (Mr. Hyndman) into spirits, 

 prevented any description being drawn up from it. 



Family LUCERNARIADJS, p. 244. 



LUCERNARIA CYATHiFORMis, " semipollicaris, stipite disco circular! 

 repando sese affigente ; corpore cyathiformi, margine dilatata, re- 

 panda, circulari, integra (s : non in radios divisa), tentaculifera, ten- 

 taculis ssepissime in fasciculis 8 fere continuis ad marginem corporis 

 dispositis ; organis generationis 8, binis approximatis." Bars Faun, 

 lit. Norveg. no. i., p. 26, tab. 3, fig. 813. 



Some time ago I received from Mr. Joshua Alder a drawing (Fig. 

 86) of a Lucernaria, the same as that characterized above by Sars. 

 It was found by Mr. David Landsborough in the south of Arran. 

 In its structure and substance it resembles the other Lucernariae. The 

 tentacles are arranged in eight tufts round the interior of the disk, 

 and probably they are extended beyond it when the animal is alive. 

 It wants the produced arms of the typical Lucernariae. 



The ordinary form of C. AUmani resembled that of Kapnea, represented in the 

 Annals Nat. Hist. vol. vii. pi. 1, fig. 1, a., and 1,6. 



