26 



Denne Pohpioc liar meircn Liglu'il med Evnoe Oer- 

 sted/, M.-ilnigren, og Euuoe nodosa,' M. Huvs. men skiller sig 

 fra begge derved, at Hovedets tjnde Tilliæug ere ucilierede 

 og ved Skællenes Form. idet ogsaa første Par Skiel ere 

 nvrefornngt aHange. samt ved Skællenes Bygning. 



ingly (lense aud nunutcly serrate (Pl. I. tigs. 21), 21). The 

 colour of the scales is bi'own in the middle of the posterior 

 portion of the surface, changing to light-yellow along the 

 sides. The body itself colourless. On the dorsal cirri and 

 the delicate appendages of the head a brown band below 

 the points. 



This Poh/iioe bears a close resemblance to Emioe Oer- 

 sted/. Malmgren, and to Eunoe nodosa, M. Sars. but diiiers 

 from ])oth' in not having the delicate appendages to the head 

 ciliated, — also in the form of the scales (the first pair being' 

 like the rest ovato-reniform ) and in their general structure. 



Polynoe semisculpta. Johnston (?). 

 Keykjavik. 



Da jeg ikke er ganske sikker paa Diagnosen hidsietter 

 jeg en Beskrivelse af Dyret. 



40 Led. 15 Par Ely trer. de bagerste Led ubedæk- 

 kede. Hovedlappen ligesaa bred som lang. Bagre Par 

 Øine paa Issen, forreste Par midt paa ydre Rand. Pal- 

 perue ligesom Tentakelen og Teutakelcirrerne omtrent 2'/2 

 Gange saa lange som Hovedet, Antennerne '/o Gang saa 

 lange som Palperne (Tab. III, Fig. 16). Tentakel. Anten- 

 ner og T^ntakelciri-er ere ligesom Dorsalcirrerne tæt cilie- 

 rede. Fødderne, delte i to omtrent lig^ lange Børsteknu- 

 der. med en kort Veutralcirre (Tab. III, Fig. 17). De 

 dorsale Borster kun lidt mere end halvt saa lange som de 

 ventrale, lidt tykkere end disse, samt tint tværtandede. De 

 ventrale Borster med todelt Spids og meget grovere tva?r- 

 tandede (Tab. III, Fig. 18). Elytrerne for det blotte Øie 

 glatte med endel smaa, mørke, atiange Knuder langs bagre 

 ■Rand; tørste Par runde, de .derpaa følgende nyreformige, 

 derefter aflange, og de bagerste ægformige med den længste 

 Axe rettet forfra bngtil. Under Mikroskopet vise Skællene 

 over hele Fladeu undtageu fortil og indad e"n Besætning af 

 smaa i Spidsen ' todelte haarde Knuder (Tab. III.. Fig. 19 

 og 2U). De støiTe Papiller i Randen ere kølleformige og 

 sidde paa en blød Stilk (Fig. 2U). Langs ydre Rand staar 

 der tæt, langs bagre Rand sparsomt Oilier. Farven er paa 

 Skællene brun, Hovedet farveløst, Tilhængene brune. Ryg- 

 gen farvelos. 



•M'" 



i ' 



l^Polynoe semisculpta, -lohnston (?). , i) 



Reykjavik. ^. i, ^ j- 



As it is not quite clear from the diagnosis whether 

 ■this Annelid be strictly identical with .]oliuston"s species. 

 I will briefly describe it. 



Forty segments. I.t jiairs of elytra': the jjosterior seg- 

 ments naked. Tlie lot)e of tlie head ;is broad as long. 

 The posterior pair of eyes on the crown, the anterior pair 

 in the middle of the outer margin. The length of the 

 palps, the tentacles, and the tentacular cirri is to that of 

 the head about as 2\ o to 1 ; the antennæ half as long as 

 the palps (PL III, fig; 16). The tentacles, the antennæ, 

 and tlie tentacular cirri are, like the dorsal cirri, densely 

 ciliated. The feet, divided into two bristle-bearing protu- 

 berances, about' equal in length, with a short ventral cirrus 

 (PL III, tig. 17). The dorsal bristles but little more than 

 half as long as the ventral, a trifle thicker, and trans- 

 versely serrulate. The ventral bristles with bipartite paints, 

 and much more coarsely serrate (PL III, fig. 18). The 

 elytræ, to the naked eye. smooth, and studded with a num- 

 ber of dark minute oblong nodules along 'the posterior 

 margin; the first pair round, the remaining pairs succes- 

 sively reniform. oblong, and — those farthest behind — 

 ovate, with their longitudinal axis parallel to the line of 

 the body. Under a magnifier, the whole surface of the 

 scales, saving the anterior portion, is found to be studded 

 with minute nodules, cleft at the points (PI. Ill, figs. 19, 

 20). The large papillæ on the margin are claviform. and 

 affixed to a soft stem (PL III, fig. 20). Both the outer 

 and the posterior margin are furnished with cilia, the for- 

 mer densely, the latter sparingly. Scales brown; head 

 colourless; appendages brown; back colourless. 



