12 Uncini with 5-6 teeth. Tubes constructed of sand and/or shells Lnimia mednaa 



12' Uncini with 6-8 teeth. Tubes constructed of mud and sand Loiniia viridis 



13 Notopodia of middle segments vascular and divided to form a 



tuft of branchial filaments with minute spinulose capillaries 



at their tips (Enoplobra)ichus) E. sa)igMi)ieKs 



13' Notopodia never vascular or divided 14 



14 No uncini even on posterior neuropodia and ventrum of thorax 



diffusely glandular. Notosetae present on thoracic segments 



at least 15 



14' Uncini present from 7th or more posterior segment. No achae- 

 tous middle region and capillary notosetae present from 

 segment 2 (Polijcirrun) 17 



15 No achaetous middle region. Notosetae restricted to 6-12 



anterior segments {Li/silUi). [Notosetae minute and their 



distribution uncertain] L. itllxi 



15' An achaetous middle region. Notosetae as capillaries on 9-13 

 anterior segments and acicular after the achaetous middle 

 region (Amacana) 16 



16 Capillary notosetae all with smooth wings. Body purple A. trilobuta 



16' Capillary notosetae including winged forms and others with 



plumose blades like an ear of wheat. Body pale A. accmoisis 



17 Notosetae including plumose forms with blades formed of a 



series of overlapping cones as well as larger, smooth- 

 winged forms P. carol iin-iisis 



17' Notosetae not including plumose forms 18 



18 Notosetae on 16-20 segments, all with minutely spinulose 



blades. Three large pairs of nephridia P. c.rimius 



18' Notosetae on 25-32 segments, all with smooth to faintly hispid 



blades. Six large pairs of nephridia P. exiiniia^ di(hiuf! 



Terebellides stroemii Sars, 1835 Trichobraiuhus glocialis Maimgren, 1866 



Tercbellides slnniiil. - Fauvel, 1927: 291, Fig. TricJiohniiivJiiis f/laciulis. - Fauvel, 1927: 288, 



100 i-q. - Day, 1967: 713, Fig. 36.1. f-j. Fig. 100 a-h. - Miner, 1950: 350, pi. 113. - 



TcrebclUdis stnxiiiil. - Hartmun, 1969: 653. Dav. 1967: 711. Fig. 36.1. a-e. 

 Fig. 1-7. 



ftfcord.s.— Off Beaufort in 160-200 m (*). 



Ri'cofds. — Off Beaufort in 40-200 m (18, 21, Distributio)i. — Cosmopolitan; rarely inter- 



*). tidal but common in deeper water down to 200 m. 



Distfibiitioii. — Cosmopolitan from the Arctic 



to the Subantarctic; occasionally intertida! Imt ^, , , ,^ ^ r ,0,.-^ 



usually at depths down to 4,000 m. ' * 1^ 



TlieUpiis s('1()siif<. - Fauvel, 1927: 273, Fig. 95 

 a-h. - Hartman, 1951: 113; 1969: 649. Fig. 

 1-6. - Day. 1967: 729, Fig. 36.6. a. 



118 



