20 



Findested. 



Station 79. Et Exemplar, der ved en Feiltagelse 

 blev saa slet konserveret, at det ved Hjemkomsten befand- 

 tes i en næsten opløst Tilstand og ubrugeligt til videre 

 Ondersøgelse. 



Habitat. 



Artskarakter. 



Fodskiven aflang, 25""" lang. siddende paa et Ror af 

 Tubularia imperialis, som den kun i ringe Grad omfatter 

 med en lappet Rand. Kolumnen 20""" hoi. cylindrisk, glat, 

 glindsende og temmelig indsnøret paa Midten, saa at baade 

 Fod- og Mundskive er betydelig bredere end denne. 

 Nederst paa Kolumnen enkelte utydelige Cinclides. Mund- 

 skiven er rund, 20""" bred, forsynet meil 48 tine Folder, 

 hvoraf de 24 indtage kun Skivens halve Bredde. Mumien 

 aflang med en stærk Gonidialknude i hver Mundvig. 2 

 Rækker korte Tentakler. 24 i hver Række, hvoraf de i 

 indre Række ere tykkest og længst. Farven: Krop og Fod 

 perlemorglindsende rosenrød. Tentaklerne noget mørkere 

 med hoirod Ring omkring Grunden. 



Station No. 79. One specimen, which by an acci- 

 dent was so badly preserved, t hat on arrival home it was 

 found be in almost decomposed conditiou, and useless 

 for any particular examination. 



Specific characteristics. 



The pedal dise oblong, 25'"'" in length, seated on a 

 tube of Tubularia imperialis, which it only in sliglit degree 

 enclasps with a lobate margin. The eolumn 20""" in height, 

 cylindrical, smooth, shining, and considerably constricted at 

 the middle. so that both the pedal and oral disc are con- 

 siderably broader tlia.n the middle part of the eolumn. At 

 the lowest part of the eolumn. a few indistinct cinelides. 

 The oral dise is round, 20""" broad, furnished with 48 fine 

 folds, of which 24 occupy only half the breadth of the 

 disc. The niouth oblong, with a prominent gonidial knot 

 in each oral angle. 2 series of short tentacles, 24 in each 

 series: the tentacles of the inner series being thickest and 

 longest. Colour. Body and hase rose-red, with mother-of- 

 pearl lustre. The tentacles somewhat darker, with a 

 bright-red annulus round the base. 



Allantactis ' parasitica, a. g. et sp. 



Tab. II, Fig. :; ; Tab, IX. Fig-. 1—4. 



Fodskiven er rund. omtrent 35""" iTversnit; men da 

 Dyret altid lever paa en Fusus (Neptunia curta Jeffr. (Friele) 

 og omfatter temmelig noie dennes Skal. antager den en af- 

 lang Form; paa unge Exemplarer viser det sig bedst, at 

 den er rund. Selve Skiven er tynd og har yderst rine 

 Linier, der straale vifteformigt ad fra Centrum til Peri- 

 pherien og antyde Insertionerne af Septa. Randen er over- 

 ordentlig tyk og stærkt ombøiet indad, hvorved Skiven faar 

 Udseende af at være nedsænket. 



Kolumnen, der er cylindrisk, er lige saa .bred som 

 hoi. henved 30"™, og temmelig stærkt foldet paatvers. Fol- 

 derne ere brede, naar Dyret er udstrakt og i fuld Vigør, 

 men blive smalere og smalere, alt ettersom det sammen- 

 trækker sig. Tab. II, Fig. 3. Overalt paa den udvendige 

 Flade er der mange Cinclides. der dog staa temmelig 

 spredte imellera Folderne. Den øverste Rand danner en 

 tyk, fremstaaende. krenuleret Vold (Parapet), og imellem 

 denne og Tentaklerne er en dyb Fure (Fossa), Tab. II, 

 Filt. 3. 



Mundskiven rund. næsten nad med tine Folder, der 

 straale ud fra Mumien henimod Tentaklerne. og som antyde 

 Skillevæggenes Tilheftning. Munden aflang, foldet paalangs. 



oXXoi? = en I'' lise. 



Allantactis ' parasitica. n. g, et sp. 



Pl. II. Bg. 3; Pl. IX. Hers. i I. 



The pedal disc is round. measures aearly 35""" across, 

 but as the animal is always seated upon a Fusus (Neptunia 

 curta Jeffr. (Friele) and embraces its shell rather closely, it 

 acquires, thus, an oblong form. Its round form is best observ- 

 ed in young speciméns. The disc itself is thin, and has 

 extremely fine lines which radiate, in flabelliform. from the 

 centre to the periphery, and indicate the insertions of septa. 

 The margin is exceedingly thick, and strongly bent inwards, 

 giving to the disc the appearance of being depressed. 



The eolumn. which is cylindrical. is as broad as it 

 is high — ahout 30""" — and is rather strongly folded transver- 

 sally. Tlie folds are broad when the animal is extended 

 in full vigour, but become narrower and aarrower accord- 

 ingly as the animal contracts itself (Pl. II, fig. 3). On 

 the exterior surface there are. everywhere, numerous cin- 

 clides which are. however, placed rather dispersedly 

 between the folds. The uppermost margin forms a thick 

 protuberant crenate wall, (parapet) and between it and 

 the tentacles there is a. deep furrow (fosse) iPl. II. fig. 3). 



The oral disc is round. almost flat. with fine folds 

 that radiate from the mouth towards the tentacles. and 

 indicate the attaehinents of the divisional walls. The mouth is 



aXVi; 



A SaUSage. 



