68 



Kroppen er omtrent It»""" hoi, sylindrisk og omtrent 

 de 6 nederste Millimeter forsynede med en tynd. inkru- 

 steret Skede, der foroven har en fri. afrundet Rand. 

 De øverste 4 Millimeter at* Kroppen er nogen og har 

 Længdefolder, paa hvilke sees temmelig store Sugevorter. 

 som staa temmelig langt fra hverandre i Længderækker, 

 Tab. XIV, Fig. 6 a. Enkelte a.f disse Sugevorter rage 

 lidt over Hudens Niveau; men de fleste ere ligesom ned- 

 sænkede i en Grube. Borttages den inkrusterede Skede, 

 saa viser ogsaa den Del af Kruppen Længdefolder, hvor- 

 paa lindes lignende Sugevorter som paa den nogne Del, 

 kun med den Forskjel, at her ligge de overalt i Gruber, 

 og til hvilke fremmede Legemer, saasom Sandkorn ere 

 festede, Tab. XIV, Fig. 6 b. 



Mundskiven er kun lidet hvælvet og fint foldet ;"Munden 

 er aflang med tykke, foldede Læber og 2 temmelig vide 

 Gonidiefurer, Tab. XIV, Fig. 6. Tentaklerne sidde i 3 

 Rækker, ere retraktile, koniske, ikke meget lange, men tem- 

 melig tykke. Tab. IV, Fig. 5; Tab. XIV, Fig. 6. I den 

 Iste — inderste — Række er der 12 Tentakler, som ere baade 

 de længste og tykkeste. Den 2''en Række afvexler med tien 

 W;', og i den er 12. som ere tyndere og lidt kortere; 

 men i den 3dje Række er der 24. nemlig 2 imellem hver 

 2 af 2den Række; de ere de mindste. Hele den ovre. 

 nogne Del af Kroppen med Mundskiv.e og Tentakler kan 

 trækkes ind i Skeden. saa ilen ganske skjuler de indtrukne 

 Dele, Tal). IV. Fig. 6. 



Farven: Skeden er graabrun: den nonne Del af 

 Kroppen er rosenrød; Mundskiven er brunrød med lysere 

 Striber, der gaa fra Mumien mod Tentaklerne. Disse ere 

 intens brunrøde, især langs den aborale Side; de i 2der og 

 3die Række ere noget lysere. 



Et Tversnit af den Del af Kroppen, der er beklædt 

 af Skeden, viser, at denne, som tidligere angivet hos andre 

 Arter, bestaar af et ydre Lag. der er dannet af en sei": 

 Membran, hvori fremmede Legemer ere inkrusterede, og 

 et indre Lag, der udgjør en skarpt begrændset. ribrillær 

 Cuticula, som noie er fæstet til det indenfor værende Eeto- 

 derm. Dette dannes af forkrøblede Cylinderceller med en 

 aflang Kjerne, men uden Cilier, Tab. XIV, Fig. 7 «, og 

 imellem Cellerne iagttages encellede Slimkjertler. Inden- 

 for Eetodermet er et smalt, fibrillært Bindevævslag, Tab. 

 XIV, Fig. 7 b, i hvis Midte sees eirkulære Muskelfibre, der 

 ikke synes at være meget udviklede, Tab. XIV. Fig. 7 c, 

 og paa hvis indre Fla.de Endothelet er tiestet. Tab. XIV, 

 Fig. 7 d. 



Paa den nøgne Kropsdel bestaar Eetodermet af lange, 

 eilierende Cylinderceller med Kjerne og rigt Protoplasma- 

 indhold, og imellem Cellerne tindes encellede Slimkjertler 

 og Nematocyster, begge i rigelig Mængde. Indenfor Eeto- 

 dermet er Bindevævslaget noget bredere, og de eirkulære 

 Muskelfibriller noget niere udviklede. end paa den af Skeden 



The body measures about 10 mm in height, is cylindric, 

 and about the lowest 6 millimetres of its height is fur- 

 nished with a thin, encrusted sheath, which has at the 

 top a free rounded margin. The uppermost 4 millimetres 

 of the height of the body is bare, and has longitudinal 

 folds upon which rather large suckers are seen. standing 

 pretty far apart from each other in longitudinal series 

 (Pl. XIV, fig. 6 a). A few of these suckers protrude a 

 little beyond the surface of the integument. but the bulk 

 of them are, as it were, depressed in a cavity. When the 

 encrusted sheath is removed, that part of the body also 

 shows longitudinal folds, upon which similar suckers are 

 tound as on the bare part. with this difference only. that 

 they here lie everywhere in cavities and have foreign 

 bodies, sueh as grains of sand. adherent to them iPl. XIV, 

 fig. 6 6). 



The oral disc is only slightly arcuate, and is finely 

 folded; the mouth is oblong with thick, folded labiæ and 

 two rather wide gonidial grooves (Pl. XIV. fig. 6). The 

 tentacles are seated in 3 series, are retractHe, conical, not 

 very long, but rather thick (Pl. IV, fig. 5; Pl. XIV, fig. 6). 

 In the innermost series there are 12 tentacles which are 

 both the longest aud thickest. The second series alternates 

 with the first (innermost), and in it there are also 12 ten- 

 tacles which are thinner and slightly shorter, lint in the 

 third series there are 24 tentacles vi/., two tentacles between 

 each 2 of the second series; these are the smallest. The 

 entire upper. bare part of the body with the oral disc 

 and tentacles can be withdrawn into the sheath. which 

 then completelj conceals the retracted parts < Pl. IV. fig. • '>)■ 



The colour. The sheath is grey-brown; the bare part 

 of the bod] is rose-red; the oral disc is brown-red, with 

 lighter-coloured stripes which issue from the mouth towards 

 the tentacles. These latter are intense brown-red in colour. 



es] ially along the aboral side. Those of the second and 



third series are somewhat lighter in colour. 



A transversal section of that part of the body which 

 is clothed by the sheath slmws, that it, as previously in- 

 dicated in other species, is composed of an outer layer 

 formed of a viscid membrane in which foreign bodies are 

 encrusted. and an inner layer that forms a sharply defined 

 fibrillar cuticulum, closely adherent to the ectoderm lying 

 inside. The ectoderm is composed of deformed cylinder-cells 

 with an oblong nucleus but without eiliæ (Pl. XIV. rig. 

 7 a), and between the eells unicellular mucous glands are 

 observed. Inside of the ectoderm there is a narrow, fibril- 

 lar layer of connective-tissue (Pl. XIV, fig. 7 b) in whose 

 middle circular muscle-fibres are seen. which do not appear 

 to be very niuch developed (Pl. XIV, fig. 7 c) and upon 

 whose inner surface the endothelium is secured (Pl. XIV, 

 fig. 7 (/). 



On the bare portion (jf the body the ectoderm consists 

 of long, eiliating cylinder-cells with nuclei and rich proto- 

 plasmic contents, and between the cells unicellular mucous 

 glands and nematocysts are found, both in great abundance. 

 Inside of the ectoderm the layer of connective-tisse is 

 somewhat broader. and the circular muscle-fibrils are some- 



