Choetopterus variopedatus (Renier. 1804) 



Chaetoptcnift rariopedatiis. - Fauvel, 1927: 77, 

 Fig. 26 a-n. - Day, 1967: 529, Fig. 22.2. a-g. 

 - Hartman, 1969: 209, Fig. 1-3. 



Records. — Cape Hatteras to Beaufort, inter- 

 tidal to 30 m (4, 5, 7, 8, 9, 11, 13, 18). 



Di!^tributio}i. — Cosmopolitan in temperate 

 and tropical seas; intertidal to 100 m. 



Mesochaetopterus taylori Potts, 1914 



M('i<ochat'topteriix tajilori Potts, 1914: 958, pi. 

 1: Fig. 1-3. pi. 3: Fig. 5, 6, 9, text Fig. 1-5. - 

 Hartman, 1969: 213, Fig. 1-4. 



Descflptloii. — Body up to 100 mm long. Pro- 

 .stomium small, oval, without eyes in adult. 

 Buccal segment large, swollen, and collarlike 

 with a pair of long grooved palps. No tentacular 

 cirrus. Anterior region of nine uniramous seg- 

 ments. Several stout brown cutting setae in 

 fourth foot. Middle region of three long seg- 

 ments with simple notopodial lobes. Cup-shaped 

 organs on second and third segment of mid- 

 region. Posterior region not clearly distinguished 

 from middle region; notopodia similar, but seg- 

 ments progressively shorter and notopodia more 

 conical. Tube fragile and u.sually covered with 

 sand. 



R( c<>)-ds. — Cape Hatteras area and Beaufort 

 on intertidal mudbanks (18, *). 



DIstribtitioN. — Western Canada to northern 

 California and North Carolina; intertidal. 



FAMILY CIRRATULIDAE 



Key to genera and species 



1 Several grooved tentacular filaments (or .scars showing their 



origin) above first few setigers 2 



1' One pair of grooved tentacular filaments or palps at junction 



of setiger 1 and last annulus of peristome 4 



2 Tentacular filaments and gills arise on same .segment (Cir)-(i- 



ti(liis) No N.C. record 



2' Tentacular filaments arise posterior to first gill filament which 

 appears on .setiger 1. [Sigmoid acicular hooks present 

 (Ciriifoniiia)] 3 



3 Tentacular filaments in a row between setigers 1 and 2. Gill 



filaments of middle segments arise immediately above noto- 



setae C. gra jidis 



3' Tentacular filaments arise above setiger 4. Gill filaments of 

 middle segments arise farther above notosetae than distance 

 between notosetae and neurosetae C.fiUgera 



4 Never more than 10 pairs of gill filaments. Acicular setae 



with spoon-shaped ends. (Dodvcaccria). [Body dark; 9-10 



pairs of gills] D. comUii 



4' Many pairs of gills. Acicular setae when present, lack spoon- 

 shaped ends 5 



5 No acicular setae even in posterior segments, only tapered 



capillaries (Tharyx) 6 



5' Acicular setae present as well as capillaries, though former 



sometimes restricted to posterior segments 8 



80 



