ANNELIDS. I. 



. 



the genus gives little to discriminate it from Lepidonotus except the numerous elytra and the elongated 

 body." The diagnosis of the genus which Mc. In tush gives is, however, such that no other of Kin- 

 berg's species of the genus Halosydna can remain in it, onlj the species gelatinosa, as Mc. 

 Intosh includes in his diagnosis the character "nuchal collar with a prominent flab." This ; , 

 flab is onh found in gelatinosa, in none of the other species. However Kinberg's descrip- \ 



tion shows clearly that he has not formed the genus Halosydna on this species; he adds 1 i 

 after the diagnosis: "Hue Polynoe gelatinosa Sars, species Scandinavia, infra descripta, pertinet" 1 \ 

 The maintenance of Mc. In tosh's frame for the genus Halosydna will have the result that \ \ 



Kinberg's other seven species, for which the genus Halosydna has been established, must 

 give up their place for the extraneous species gelatinosa and must be referred to some 

 other genus. According to my opinion it will be much more rational to maintain Malm- 

 g r en ' s genus-name A Initio. 



As to the specimens from the Faroe Islands, these agree well with the 

 descriptions and the figures hitherto published. Only concerning the ventral 

 bristles shall I take any reservation : Langerhan's figures 6/', /, g, do not agree 

 well with the experiences I have made in the specimens from the Faroes; I have 

 therefore figured two ventral bristles, as I find them the most typical (fig. 22 a, />). 



Sigalionidae. 



Leanira tetragona (Orstecl). 



1845. Sigalion tetragonum, Orsted: Nat. Tidsskr. 2. R. I. p. 204. 



1865. Leanira tetragona, Malmgren: Nord. Hafs-Ann. p. 88. 



1883. — , Levinsen: Nord. Ann. p. 42. 



1893. , Bidenkap: Xorges Ann. p. 65. 



Locality: 



64°05' N. L. 55°2o' W. L. rioom. vSouthern part of Davis vStrait. 



Drouth eims-fj or d, off Tautra. 



S. E. '/ 2 E. off 0x0 2Q5 m. Norway. 



63°05' N. L. 22°23' W. L. 326—216 m. Atlantic. 



62°57' N. L. i9°58' W. L. 957 m. Atlantic. 



58°32' N. L. 4°iS' E. L. 280 m. North Sea. 



57°48' N. L. 7°4i' E. L. 440—460 m. Skager Rak. 



57°32' N. L. 7 14' E. L. 254 in. Skager Rak. 



58°o4' N. L. 9=49' E. L. 250 m. Skager Rak. 



N. of Hanstholrn, 53 miles, 526 m. Skager Rak. 



N. N. W. ' 2 W. of Hanstholrn 313 m. Skager Rak. 



N. N. W. of Hirtshals, 44 miles, 660—420 m. Skager Rak. 



X. ' 2 W. of the light-ship of Skagen 140 m. 



X. W. t. X. of Hojen (Skagen) 19 miles, 525 m. 



fig. 22. 



