Annelids of Alaska— HARTMAN 
49 
Fig. 12. Chitinopoma occidentals: a, thoracic uncinial plate from left side, seen in posterior view, 
X 1342; b, larger collar seta, seen from the side, X 748; c, smaller collar seta from the same fascicle, 
seen from the side, X 895; d, anterior end of body, showing operculum with attached tentacular 
crown, in dorsal view (opercular cap turned to right to show asymmetry), X 19.4; e, anterior end 
of tube, showing circular aperture, X 15.6; /, entire tube attached to shell fragment, in dorsal view, 
X 4.4. 
