48 



close in front of the insertion of the bristles 2 very strong chiiinc-hooJcs (fig. 20 b. lig. 35) 

 which iiroject forward to a certain height; so that they may be distinctly observed, even 

 when the entire animal is seen through a microscope with low magnifying power. The chitine- 

 hooks are slightly bent like an S, and have a short conical shaft or root, which is planted 

 in the node, and at the point of transition to the proper hook forms a nodous swelling. The 

 backward-bent terminal part is about V3 as long as the other part, and sharply pointed. I 

 cannot express any decided opinion as to the destination of these peculiar chitine-hooks : 

 as the present form, like the other Araphinomes, lives free, they cannot have the same desti- 

 nation as the so-called hook-bristles in the Annelides that dwell in tubes. 



In the living state this little Annelide is of whitish color and rather transparent, so 

 that the dark intestine is distinctly visible through the walls of the body. In the anterior 

 part of the body there are remarked several very conspicuous blood-vessel trunks, of which 

 2 are especially distinct, extending with a winding course along the body, one on each side, 

 and throwing out lateral branches upwards to the gills (see fig. 23); further behind appears 

 a 3'.'' longitudinal vessel on the ventral side, in the middle between the 2 mentioned, and 

 with lateral branches anastomosing with the same. In its movements, the animal is not par- 

 ticularly lively, and when in the least irritated, rolls itself up in a circle, whereby the long 

 diverging bristles on the dorsal foot-nodules are made to stick out in all directions. In this 

 position, which the animal always assumes when thrown into spirit, (see fig. 19) it remains 

 until it perceives that all is quiet, whereupon it straightens itself out slowly, and moves its 

 body, with a sluggish snake-like motion, hither and thither. 



It appears to be found all along our coast, and has a wide bathymetric distribution. 

 At Lofoten, where I first found it, it occurs now and then in the great depths to 300 fathoms. 

 I have since met with it again in the Christiania Fjord at Vall0 at depths from 100—230 

 fathoms; and lately at Aalesund. In the last named place it was not rare, close to the town 

 in 20—30 fathoms on soft muddy bottom. 



The new Genus and species may be characterised in the following manner: 



Gen. Faramphinome. M. Sars. 



Corpus vermiforme, modice elongatum, segmentis paucis, Lobus cephalicus parvus 

 postice productus, caruncula vero nulla distincta. Oculi nulli. Tentacula capitis 5 brevia, 

 cylindi-ica forma et maguitudine sub-sequalia, unum medianum in parte postica, 2 anteriora 

 et 2 lateralia. Cirrus dorsalis et ventralis in l";- segmento distincti, elongati, forma tentaculis 

 cephalicis similes, in ceteris rudimentarii. Os fissuram longitudinalem labiis 4 carnosis cir- 

 cumdatura formans ; proboscis brevis et crassa apice irregulariter lobato nullis armato maxillis 

 vel dentibus. Anus terminalis. Pedes biremes, remis minimis et longe sejuuctis, superiore 

 subdorsali, setis tenuissimis capillaribus, aliis multo brevioribus et robustioribus interpositis, 

 inferiore laterali, setis plerumque obsoleto bidentatis, dente altero brevissimo, altero (ajiice) 

 tenuissimo margiue altero subtiliter deutato, nonnullis multo brevioribus et robustioribus 



