ANNELIDS. I. 



St. 15. 66°i8' N. L. 25°59 W. L. 330 fins. Danmark Strait. 



- 98. 6 5 ° 3 8' 26 2 7 ' 138 



- 46. 6i°32' — ii°3"' — 720 — West of the Faroe Islands. 



Further, it has been taken: West-Greenland; Northern Strom-fjord. 48—46111. and 375—380111., 

 stonv -round. 70^2' N. I,. 5 4°28' \V. L. 480 111., 68°2o' X. I.. 54°03' W. L. 4 l8 ~ 532 111., 62°58' N. L. 

 50°52' W. L. 47 m. Davis Strait by the investigation vessel "Tjalfe". In Fast-Greenland it has been 

 taken in: 72°27' N. L. i9°56' W. h. 190111. Off Henry land, 38 111. stony bottom. Tasitisak, 36 in. 

 72°25' N. L. i9°33' W. L. 266 111. Further at Jan Mayeu, 105 111. and at Iceland in Seydis-fjord, Skulavig 

 12 in., Bakkefjord, 60 in. 



We here have one of the most varying species within the group of the Polynoids. //. nodosa 

 is not only a form with a large geographical range with distinct local varieties, but it is, within a 

 rather limited area, able to vary considerably. It belongs to those forms which easily make systematical 

 confusion, and the different investigators have difficulty in agreeing about what is to be considered 

 a variety and what must be maintained as a distinct species. And for the individual investigator it 

 is difficult to form a decided opinion on the value of the special forms established by other authors. 



A rather rich material of this species is present, large as well as small individuals. 



Generally the specimens have a rather characteristic aspect: The scales are beset with greater 

 and smaller bodies, which often grew rugged, or branched, outgrowths. Very often forms like those 

 figured PI. Ill fig. 10 are seen. Scales as well as cirri show a rich supply with papilla?. This feature 

 especially shows characteristic as to the palps on which the papilla.- are arranged in 6 longitudinal 

 rows, stretching from the base of the palp to its tip. The seta? are of a rather constant shape, the 

 dorsal bristles being of the well-known swordlike shape characteristic in the genus Harmothoe sensu 

 Levinsen, the ventral bristles having a rather large end-blade provided with rather strong spines; no 

 accessory tooth under the apex, and about the distal half of the end-blade quite smooth. 



Ennor tritoni Me. Intosh, the palps of which are provided with the above named six longitudinal 

 rows of papilla?, and is, therefore, possibly to be referred to the species in mention, differs from 

 the typical feature in respect to the dorsal seta?; the transverse rows of spines reache in E. tritoni to 

 the tip of the bristle which is not the case in H. nodosa. For the rest I do not know Mc. Intosh's 

 species from autopsy. 



Among my material was found a specimen which is to be referred to Moore's Gattyana senla, 

 agreeing well with the description and figures of this author. In PI. II fig. 1 I have figured a scale 

 not much different from Moore's fig. 2 PI. XIII. — It was soon quite clear to me, that Moore's species 

 could not belong to the genus Gattyana, and that it must be referred to the group Harmothoe nodosa 

 was evident from the papilla? being arranged in six longitudinal rows. For the rest, the same opinion 

 is already expressed by Augener in Zool. Anzeiger 1910: „Bemerkungeu iiber einige Polychceten von 

 Roscoff ec c. u , p. 244. He writes: „Eine nahestehende Art ist die gleichfalls alaskische "Gattyana senta 

 I. P. Moore, die nach der Form ihrer Dorsalborsten eher in die Gattuug Eunoe zu passen scheint". It 

 is seen from my observations above that the resemblance reaches further than to the dorsal seta?. In 

 reality the only difference between Moore's species and the typical //. nodosa, if it is possible to 

 speak about such, is that in the former the spines of the scales have become uncommonly long 



