in OiP. Stomach of the Geiyonidae. 217 



extraordinarily contractile tentacles, which are thickly furnished 

 with numerous small, strongly refractive, round corpuscles 

 (nettling capsules ?). An animal in this state of development, 

 such as I once met with at Naples floating with various other 

 pelagic animals among the drift-materials of the surface, but 

 more frequently found still adhering to the Garmarina^ greatly 

 resembles the peculiar medusoid creature from the bay of Nice 

 described by Leuckart under the name of Pyxidlum truncatum^ 

 especially as the latter, like the young C'«<«/«a-polype3 observed 

 by me, scarcely made any movement, and Avas only passively 

 carried along. 



As soon as the tentaculiform processes in the periphery of 

 the buccal, aperture are formed, the young animal attaches 

 itself to some part of the body of the Car marina. Most fre- 

 quently this takes place on some part of the tongue of the 

 Geryonid, or on the inner wall of the stomach. Sometimes 

 also I found Carmarime more or less closely set with such 

 young Gunina-^o\j^Q,B behind the velum, on the subumbrella. 

 It is only very rarely, indeed almost exceptionally, that the 

 Carmarince are burdened with a C'^^/^'na-polype ; but then in 

 general there are two at least, or even more, together. The 

 animals adhere pretty firmly to the Geryonid ; but when care- 

 fully detached they live for a long time, and even become still 

 further developed in experimental glasses. 



After the young C2«i/??rt-polypes have attached themselves 

 to the Geryonid they are subject to no further important meta- 

 morphosis. The young polype grows rapidly, and at the same 

 time changes its originally rather bruad and depressed form 

 for a more elongated one. The finely granular mass, which 

 almost entirely occupied the body-cavity of the free-swimming 

 larva and which is also long visible in the polype, constantly 

 becomes smaller as the latter grows, and at last entirely dis- 

 appears ; it is evidently used up as nutriment by the growing 

 polype. Such polypes (bud-ears, Knosjjenahreii of Hiickel) as 

 have the form of a much elongated, strongly contractile tube, 

 and are already beset with a number of Cimiila-huds, are 

 tolerably correctly figured in the plate which accompanies 

 Noschin's memoir (' M(ilanges Biologiques,' tome v.). 



I will not describe here the process of budding of the 

 Cumme on the polype, as it has already been })retty completely 

 and correctly observed by Noscliin and Iliickel. I only remark 

 that the rudiments of the first CamiKr are to be observed even 

 on the polypes which arc not yet attached. (Such a rudiment 

 is indicated at /t-w in fig. 2.) The important (|uestion, to which 

 species the young Cnnime belong, and whether they increase 



Ann. dc Mag. N. JHst. Ser. 4. VnJ.wW. 15 



