34 U.S. NATIONAL JVIUSEUM BULLETIN 2 27 



Distribution. — Widely distributed in the Arctic. Also Iceland, 

 Norway to Denmark, Gulf of St. Lawrence to Massachusetts, Bering 

 Sea. In 9 to 609 fathoms. 



Genus Harmothoe Kinberg, 1855 



Evarne Malmgren, 1865; preoccupied by Adams (1853, Moll.); type (mono- 

 typy): Evarne impar Malmgren, 1865 (not Polynoe impar Johnston, 1839); = 

 Harmothoe fragilis Moore, 1910 (see below, p. 39). 



Evarnella Chamberlin, 1919, new name for Evarne, preoccupied. 



Type (designated by Bergstrom, 1916): Harmothoe spinosa Kin- 

 berg, 1855. 



Subgenus Hermadion Kinberg, 1855 



Type (designated by Bergstrom, 1916): Hermadion magalhaensis 

 Kinberg, 1855. 



Subgenus Lagisca Malmgren, 1865 



Type (monotypy): Lagisca rarispina (Sars, 1860); =Harmothoe 

 extenuata Grube, 1840. 



Subgenus Ennoe Mabngren, 1865 



Type (designated by Uschakov, 1955): Eunoe nodosa (Sars, 1860). 



All the species represented have the body relatively short (35-80 

 segments), widest in anterior third, attenuated posteriorly, frag- 

 menting and losing elytra readily. Elytra 15 pairs, covering the 

 dorsum except for the more posterior segments in the longer species; 

 elytra provided with chitinous conical microtubercles, with or with- 

 out additional macrotubercles. Notosetae as stout as or stouter than 

 the neurosetae, with well-marked spinous rows and smooth blunt to 

 pointed tips (fig. 7c). Neurosetae with elongated spinous regions, 

 with tips slightly hooked, with or without a secondary subterminal 

 tooth (fig. 7d). 



Key to the New England Species of Harmothoe 



1. Segments more than 50 (50-80). Notosetae few in number (4-10). 



H. (Hermadion) acanellae (p. 35) 

 Segmentsless than 50 (35-49). Notosetae more numerous 2 



2. Anterior pair of eyes antero ventral, not visible dorsally (fig. 7a). 



H. imbricata (p. 36) 

 Anterior pair of eyes anterolateral, visible dorsally (fig. 8a) 3 



3. Elytra with microtubercles only or with additional globular to rodlike soft 



macrotubercles (figs. 8,b-c,e,g; 9,e,g). Neurosetae with tips entire or with 



secondary tooth (fig. 7d) 4 



Elytra with microtubercles and additional nodular to spiny macrotubercles 

 (fig. 9,6,d). Neurosetae with entire bare tips (fig. 9c) 8 



