LIZZIA BLONDINA. 67 



from those of the mother, and indeed evinced a distinct individual Kfe. The marginal fibres, 

 the number of which were sixteen, viz. three and one alternately issuing from the marginal 

 granules, were of the length of the disk or a little larger, and moved themselves, worm-like, 

 in every direction. 



" I placed this individual by itself in a vessel filled with sea-water. On the very evening 

 of the same day I found that the young one had severed itself from the mother, swimming 

 about rapidly in the water. The bell-formed disk (from five to six times sm,aller in diameter 

 than that of the parent) was more rounded at the upper part, and not so high as in the 

 mother ; every trace of the locality of adfixture, which, as already mentioned, is at the back 

 of the disk, had already disappeared. At its stomach I observed two small knots of an 

 unequal size, being probably the first commencement of the issuing young ones of the second 

 generation. In other young ones (that had not yet freed themselves from their progenitor), of 

 about the same size as this, I have found, four such unequally-sized little knots, — ^otherwise 

 growing young ones — issuing forth from the stomach. 



"On the morning of the following day I had another rather smaller young one, which had 

 been attached to the same mother, swimming about merrily with the above-mentioned one, 

 the latter having grown to J — ^ of the size of the mother in diameter." 



The Lhzia octopunctata is a gregarious species. It is very conspicuous, owing to the 

 jetty colour of its ocelli and ovaries. It moves much less gracefully than most of its allies, 

 jerking itself through the water with sudden and vigorous leaps. It is lively, vigorous, and 

 tenacious of life. 



Plate XII, fig. 3, « and S, represents it seen in profile, and from above, magnified ; 

 3, c, is the peduncle with a budding young one far advanced, and the curious bifurcated lips 

 of the stomach ; 3, d, is the same seen from above ; three of the buds in this instance are' very 

 rudimentary ; 3, e, represents two of the tentacular bulbs. The variety figured is that with 

 only two tentacles springing from the intermediate bulbs ; that with three, as figured by Sars, 

 is equally, if not more, abundant. I have no reason to suppose them to be specifically 

 distinct. 



2. Lizzia blondina, Forbes. 

 Plate XII, fig. 4. 



Rather smaller than the last species, not so common, and of solitary habit, is another 

 Liazia inhabiting the Zetland seas, and met with first in the Sound of Brassay, and afterwards 

 off Fitful Head, during the autumn of 1845. 



The umbrella of the Jjin%ia blondina is sub-conical, smooth, inflated, and colourless. 

 Its margin is ornamented with eight oblong, yellow, compound, tentacular bulbs, alternately 

 small and large, each of the latter giving origin to three yellow tentacula, the former to only 

 one, equally yellow, however, and not different from the other tentacles in dimensions. Their 

 substance, when highly magnified, appears minutely and granularly ringed. The sub-umbrella 

 is rather small in proportion to the umbrella, conic, and truncated above. Four simple mar- 

 ginal vessels run down its sides, opposite the four larger fascicles of tentacula. A broad veil 

 borders its opening. From the centre hangs a short, four-lobed, yellow peduncle, producing 

 gemmules unsymmetrically, exactly as the last species does, in the intervals of the lobes. 



