Miscellaneous. 155 



is still connected with its parent only by a slender cord, stretches 

 the fore part of the body out of the capsule, tears itself free, and 

 swims awaj% carried along by fine cilia which cover the whole body 

 in close longitudinal series. At the anterior extremity rudiments 

 of pectinellse already show themselves, and a slight notch is the 

 beginning of the formation of the funnel-lobes. After the young 

 animal has swum about freely for a time it attaches itself to some 

 firm support and secretes the material of the capsule as a trans- 

 parent mass, thicker behind than before, where it is not yet turned 

 out as in mature individuals. — Sdiriften naturiv. Ver. fur Schhswig- 

 ffohtein, Bd. vi. Heft 1 (Kiel, 1885). 



On Adamsia palliata. By M. Faueot. 



The constant association of Adamsia palliata and Eupagimis 

 Prideauxi has long been known without having been made the 

 object of any special investigation. This association is equally for 

 the benefit of both animals — abundant and well-prepared food for 

 the Adamsia^ the mouth of which is placed behind the foot-jaws 

 and chelae of its associate, and a shelter adapted to the peculiar 

 structure of the Eupagurus, the ambulatory legs of which, extending 

 far at the sides and remarkably active, could not move easily with a 

 dwelling which was not so exactly fitted to the form of the animal. 

 Thus Eupaguri captured in the open sea and destitute of Adamsice 

 present, attached to the extremity of their abdomen, gasteropod 

 shells, which are always of very small dimensions, so as not to 

 interfere with the movements of the ambulatory feet. Hence when 

 these animals live separated from their habitual associate they are 

 imperfectly sheltered. 



Another proof of the peculiar function of the Adamsia is that in 

 the association of two adult individuals the size of the Actinia is 

 always in relation to that of the crustacean, while the shell is most 

 frequently of very small dimensions. The latter therefore serves 

 chiefly as the common point of fixation of the two creatures. 



"Whatever may be the deformation presented by the adult Adamsia, 

 its anatomical structure is morphologically the same as that of other 

 Actiniae. It more particularly approaches that of Sagartia para- 

 sitica {Adamsia Bondeletii, Carus), the foot of which likewise 

 secretes a layer of mucus which acquires a membranous consistency. 

 The two species are furnished with six pairs of large primary septa 

 and six secondary, equally remarkable for their breadth ; the 

 former are provided with sexual glands throughout their whole 

 extent, and advance much beyond the other folds towards the middle 

 of the gastric cavity. In both the acontia originate at the base of 

 the folds, immediately below the reproductive organs. Their origin 

 thus constitutes an excellent mark to indicate the base of the 

 column. This enables us to assert that in Adamsia the foot is all 



