25 



Fig. 16), Palperne, med 6 Papillerader, omtrent 4 Gange 

 længere end Hovedet; Tentakelbasis tjk. Tentakelen selv 

 tynd, ikke fuldt saa lang som Palperne; Tentakelcirrerne 

 af Tentakelens Lanigde; Antennerne af Hovedets Læugde, 

 Uisse tynde Hovedtilliæug have en spiudelformig Opdrivning 

 nedenfor den tynde Spids og ere glatte, medens Dorsal- 

 cirrerne, der rage noget udenfor Børstei"ne og have Form 

 som Hovedtilhængene , ere tæt cilierede. Skælleue ere 

 samtlige, ogsaa første Par. aflangt nyreformige, besatte ved 

 den bagre Rand med 2 eller 3 store koniske mørke Papil- 

 ler og laugs ydre Raud med 5 — 8 lysegule (Tab. I. Fig. 17). 

 Under Lupen qpdager man smaa haarde Knuder over hele 

 Fladeu af SkæDet undtagen langs indre fordre Rand. Disse 

 smaa Kunder ere halvkugleformige eller noget aflange og 

 dels mørkebrune, dels lysegule, medens de store Papiller i 

 Randen ere koniske og i Spidsen delte i et Bundt korte, 

 jevntykke Takker (Tab. I. Fig. 18). . Langs ydre Rand en 

 Rad af tætstaaende. temmelig korte Cilier, der ogsaa findes 

 sparsomt langs bagre Raud samt indover den ydre bagre 

 Del a£ Fladeu. Fødderne med kort. tyk Dorsalknude og 

 temmelig langt fremragende Ventralkuude, samt med en 

 kort Ventralcirre, der ikke naar hen til Spidsen af Fod- 

 knuden (Tab. L Fig. 19). De dorsale Børster noget kor- 

 tere end, men omtrent ligesaa tykke som de veutrale Bør- 

 ster, der have eu udelt Spids og ere noget grovere tver- 

 tandede end de dorsale, der ere meget tæt og fint taudede 

 (Tab. I, Fig. 20 og 21). Farven p^a Skælleue er brun 

 midt paa den bagre Del af Fladeu og gaar til begge Sider 

 over i lysegult. Kroppen er farvelos. Paa Dorsalcirrerne 

 og de tynde Hovedtilhæng et brunt Baand nedenfor 

 Spidsen. 



Den «orske Nordhavse-ifpedition. G. A. Hansen : Annelida. 



broad. The posterior pair of eyes on the crown, the an- 

 terior pair in the middle of the outer margin, PI. I. lig, 16. 

 The palps, with 6 rows of papillæ. about 4 times as long 

 as the head; base of tentacle thick, the tentacle itself 

 slender, not quite so long as the palps; the tentacular cirri 

 of the same length as the tentacle, the autennæ as the 

 head. These delicate appendages are distinguished by a 

 fusiform swelling below the slender extremity: tiiey have a 

 smooth surface; whereas the dorsal cirri, of tlie same form 

 as the said appendages, and projecting a little beyond the 

 bristles, are densely ciliated. The scales ( including t*he first 

 pair) are all ovato-reniform. furnished down the posterior 

 margin with 2 or 3 large, conical, dark-coloui-ed papillæ. 

 and along the outer margin, with from b to 8 of a lightish 

 yellow (PI, I, tig. 17). Viewed through a lens, tiie entire 

 surface of the scales, excepting " only the inner anterior 

 margin, is found to be covered with minute hard )u-otube- 

 rauces. These minute protuberances are in form either 

 semi-globose cfi- somewhat oblong, and in colour partly 

 dark-brown, partly light-yellow; whereas the large papillæ 

 on the margin are conical, and divided at the point, which 

 consists of a fascicle of sjiort spikes, uniform iu thickness 

 (PI. L fig. 18). Along the outer margin is seen a series 

 of closely set. com])aratively short cilia, which occur, too, 

 sparingly distributed, along the posterior margin, and, ex- 

 teildiug inwards, also over the outer posterior jiortiou of the 

 surface. The parapodia have short, thick dorsal and com- 

 paratively long ventral protuberances, together with a siiort 

 ventral cirrus, which does not reach to the extremity of 

 the pedal protuberance (PL I. fig. 19), The dorsal bristles 

 somewhat shorter tiian, but nearly equal in thickness to, the 

 ventral, which iiave the points simple, and are mucii. uiore 

 cdai'sely deutated than the dorsal. _tiie latter. being exceed- 



. 4 



