93 



Punkter. Capitulum svagt laxerødt, stundom ganske hvidt. 

 Mundskiven sinnoberrød med fine, mørkere Linier. Tentak- 

 lerne samme Farve, dog noget mørkere ved Granden, lysere 

 i Spidsen. 



Subfamilie Halcampidæ, A 



vildres 



Halcampoides abyssorum. 



Tab. V. Fig. 1; Tab. XV. Fig. 4—11: Tab. XVI. Fig. 1- I. 



Legemet, der er langstrakt, cylindrisk, omkring 70""" 

 langt og 12""" bredt i den forreste Del, ender temmelig 

 spills, tapformigt, Tab. V, Fig. 1. Den midterste Del af 

 Kroppen (Scapusi er tykkest, indtil 15""". Hele Kolumnen 

 omgiven at' en membranagtig Skede, der udvendig er infil- 

 treret med Ler og Skaller af Foraminiferer, men ind- 

 vendig glattere og niere eller mindre fast adhæreret til 

 Kroppens Overflade. Denne Skede er dog ikke fastere 

 heftet til Kroppen, end at den ved stærk Skylning med 

 Søvand løsrives, saa at kun enkelte Flækker blive tilbage, 

 Tab. V, Fig. 1 a. 



Naar Dyret er udstrakt, og Tentaklerne udfoldede, 

 viser Kolumnens øverste Del sig at være nøgen og rager 

 o_6»"" over Skedens Rand, Tab. V, Fig. 1 b. Denne 

 forreste, nøgne Del (Capitulum) er glindsende og forsynet 

 med 12 Længdefurer, som opimod Mundskiven blive dybere 

 og bredere, Tab. XV, Fig. 5 a, og imellem disse Furer 

 sees Længdefelter, hvori rindes uregelmæssigt spredte Suge- 

 vorter, der ligge nedsænkede i Huden og ere saa smaa, 

 at de kun iagttages under stærk Loupe, Tab. XV, Fig. 

 5 h. Borttages Skeden, saa viser det sig, at de riævnte 

 Furer strække sig lige til Koluninens bagerste Ende, lige- 

 som Kroppens Overflade overalt er forsynet med de samme 

 Længdefelter og Sugevorter, som paa den nøgne Del. 



Den bagerste Ende (Physa) er konisk tilspidset, tem- 

 melig kontraktil, forandrer let Form, idet den udvides og 

 saminentrækkes, uden nogensinde at kunne indtrrekkes, og 

 er paa sin yderste Spidse forsynet med en rund Aabning, 

 som ligeledes udvider og sammentrækker sig. Denne Sam- 

 mentrækning og Udvidning er temmelig uregelmæssig, og 

 ved Kontraktionen sees en fin Vandstraale at jages ud af 

 Aabningen, Tab. V, Fig. 1 ; Tab. XV, Fig. -1. 



Mundskiven er lidt hvælvet og har 12 Folder, der 

 udgaa fra den noget atlange Mund, hvor de ere temmelig 

 smale, men blive bredere henimod Kropsranden, Tab. XV, 

 Fig. ti, som er afrundet og jævn. 



Tentaklerne sidde i en Række omkring Skivens Rand; 

 de ere lange, tilspidsede, 12 i Antal og kunne trækkes 

 fuhlkumiiien ind i Kroppen. Tal). V, Fig. 1. 



The Coloiir. The encrusted portion brown-blaek, dotted 

 with partly white, partly green and reddish points. The 

 oral dise cinnabar-red with rine. darker lines. The ten- 

 fcacles the same colour, but somewhat darker at the base. 

 lighter at the point. 



SuMaihily Halcampidæ, Andres. 

 Halcampoides abyssorum. 



Pl. V. Kg. l; Pl. XV, Egs. 4—11; Pl. XVI. figs. 1-:;. 



The body is elongate and cylindrical ; measures about 

 70"'"' in length. and 12""" in breadth at the anterior part. 

 and terminates rather pointedly in coniform (Pl. V, fig. 1). 

 The medial part of the body iscapus) is the thickest, 

 nieasuring about 15""" in thickness. The entire column is 

 surrounded by a membranous sheath infiltrated, exteriorly, 

 with clay and shells of foraminifera, but whose interior 

 surface is smooth and more or less rirmly adherent to 

 the outer surface of the body. This sheath is, however, 

 not more rirmly adherent to the body. than tliat it may be 

 removed by a strong deluging with seawater, so that only 

 a few patches are then left behind (Pl. V. rig. 1 a). 



When the animal is extended and the tentacles un- 

 folded. tlie upper part of the column appears bare, and 

 reaches 5 — (>""" beyond the margin of the sheath (Pl. V. 

 fig. 1 b). This anterior, bare part (capitulum), is sliiny, 

 and furnished with 12 longitudinal furrows, which up towards 

 the oral dise become deeper and broader (Pl. XV, rig. 5 a) ; 

 and between those furrows longitudinal folds are observed. 

 in which irregularly scattered suckers are found lying 

 embedded in the integument, and so small that they can 

 only be observed with the aid of a powerful magnifying 

 glass (Pl. XV, rig. 5 b). If the sheath is removed it 

 then appears, that the furrows nientioued extend them- 

 selves quite to the posterior extrenhty of the column, whilst, 

 also, the extemal surface of the body is everywhere 

 furnished with similar longitudinal folds and suckers as 

 on the bare portion. 



The posterior extremity (physa) is conically acumin- 

 ated, rather contractile, changes its form whilst expanding 

 and contracting, withont at anytime being capable of 

 retraction. At its extreme point it is furnished with a 

 round aperture, which also expands and contracts itself. 

 This contraction and expansion is rather irregular, and 

 during contraction a fine jet of water is seen to be ejected 

 from the aperture (Pl. V, fig. i; Pl. XV. fig. 4). 



The oial disc is slightly arcuate and has 12 folds, 

 which issne from the somewhat oblong mouth. where they 

 are rather narrow, but become broader towards the margin 

 of the body (Pl. XV, fig. li), which is rounded and even. 



The tentacles are situated in a series round the 

 margin of the disc; they are long. acuminated, 12 in 

 number. and nia v be completely retracted into the body 

 (Pl. V, fig. 1). ' 



