27 



Flade, der er svagt foldet paalangs; imellem Længdefolderne 

 Cinclides. Kroppens Væg tynd, halvt gjennemsigtig i 

 udspændt Tilstand. Mundskiven omtrent 40»"" bred, lidt 

 hvælvet og fint foldet. Munden aflang, foldet, forsynet med 

 to dvbe, næsten triangulære Gronidiefurer, samt en konisk 

 Gonidieknude i hver Mundvig. Tentaklerne omtrent lige 

 lange, korte, tilspidsede mod Enden, der er perforeret, 

 siddende i 3 Rækker: 1G i forste og anden Række, 32 i 

 tredie Række. Tentakler og Mundskive kunne dækkes 

 fuldkommen af Kroppens Rand under Dyrets Sammentræk- 

 ning. Farven: Kroppen bleg. rodlig-hvid. Tentaklerne 

 rosenrøde, spillende i det Gule. Mundskiven mørkere gul- 

 rød mod lysere, gulhvide Straaler. Gonidiefuren gulhvid, 

 ligesaa Gonidieknuderne. Paa hver Side af Gonidiefuren 

 (Mundvigen) har Munden 16 stærke Folder, hvoraf de 8 

 ore gulhvide. de andre 8 have en mørkerød Farve. Fod- 

 skivens undre Flade er mørkerød, spillende lidt i det Gule. 



Ogsaa denne Slægt har jeg henfort til Sagartiderno. 

 ua- tet den ingen Acontier har; men da den forresten har 

 Sagartidebygningen. har jeg ikke fundet det nødvendigt, at 

 danne on ny Familie for den. 



Sagartia repens. n. sp. 



Tab. I. Fig. (i. Tal». X. Fig. 2. ::. 



Fodskiven. som ikke er synderlig bredere end Krop- 

 pen, er lund med en tyk, lidt unduleret Rand. der med 

 stor Lethed trænges opad og udåd; dens Underflade er 

 lidt iordvbet mod Centrum. hvorfra udgaa vifteformigt Fol- 

 der mod Randen, men forresten er den glat. 



Kolumnen er cylindrisk, b0""" hoi og 40 ' bred ved 



Foden, men smalner noget af op imoil don øverste Rand, 

 som er tentakulær. Dens ydre Flade er glat. halvt gjen- 

 nemsigtig, saa Insertionerne for Skillevæggene kunne tyde- 

 lig sees som fine Linier, imellem hvilke lindes i næsten 

 regelmæssige Længderækker smaa, runde, isolerede Vorter 

 med en Fordybning i Midten (Suckers), hvortil Ler og an- 

 dro fremmede Legemer, saasom Skiælstumper, ere fæstede. 

 Foruden disse Sugevorter iagttages ogsaa hist og her Cin- 

 clides. som især fremtræde tydeligt, naar Dyret er ud- 

 spændt; derimod er det yderst vanskeligt at opdage dem 

 under dets Sammentrækning. imedens Sugevorterne da 

 blive tydeligere, Tab. I. Fig. ('». 



thin. slightly undulating margin, has a smooth extornal surface, 

 which is faintly folded longitudinally ; between the long- 

 itudinal folds cinclides visible. The wall of the body thin; 

 in expanded condition semi-transparent. The oral disc about 

 40""" in breadth, a little arcuate and finely folded. The 

 moiith oblong, folded, furnished with 2 deep. almost trian- 

 gular gonidial grooves, and also with a conical gonidial knob 

 in each oral angle. The tentacles about equal in length, 

 short. acuminated towards the extremity, which is perfor- 

 ated; seated in 3 series. Hi in the first and second series. 

 and 32 in the third series. The tentacles and oral disc 

 can be completely covered by the margin of the body 

 wlien the animal contracts itself. The colour: the body 

 pale reddish- white ; the tentacles rose-red. shading to 

 yellow; the oral disc a darker yellowish-red. with lighter 

 yellowish-white ravs; the gonidial groovo. and also the 

 gonidial knobs yellowish-white. On each side of the gon- 

 idial groovo (oral angle) the mouth has l(i strong folds, of 

 which 8 are yellowish-white; the other 8 have a dark -red 

 colour. The under-surface of the pedal disc is dark-red. 

 shading a little to yellow. 



This genus I have also assigiied to the Sagartidæ 

 although it has no acontia, but as it has. otherwise, the 

 surne structure as the Sagartidæ. I have not found it necess- 

 arv to form a new iamilv for it. 



Sagartia repens. n. sp. 



Pl. I. ria- ii. Pl. X. figs. '2. 3. 



The pedal disc. which is not much broader than the 

 body, is round, and has a thick, slightly undulating margin, 

 that can with perfect ease be careened upwards and outwards; 

 its under-surface is a little depressed towards the centre. 

 from which folds issue in flabelliform towards the margin, 

 but it is smooth otherwise. 



The column is cylindrical. measures 50""" in height, 

 and 40""" in breadth at the base. becoming somewhat nar- 

 rower up towards the uppermost margin, which is tentac- 

 ular. Its exterior surface is smooth and semitransparent. 

 so that the insertions of the divisional walls niay be distinctly 

 seen. appearing as fine lines between which, arranged in 

 almost regular longitudinal series, small round. isolated 

 mammillæ with a small depression (suckers) in the middle 

 are found. to which clay and other foreign bodies. sueh as 

 fragments of sholls. are adherent. Besides these suckers. 

 cinclides are also seen here and there; these become 

 especially prominent when the animal is expanded, while. 

 on the other hand. it is extremely difficult to detect them 

 when the animal is contracted. as the snokers tlien become 



moro prominent (Pl. I. fig. 6). 



r 



