POLYCHAETE WORMS, PART 1 

 Genus Spinther Johnston, 1845 



67 



Contains 



Type (monotypy ) : Spinther oniscoidcs Johnston, 1845. 

 only one New England species. 



Spinther citrinus (Stimpson, 1854) 



Figure 15 



Spinther cUrinus Verrill, 1881, pp. 290, .303, 307.— Webster and Benedict, 1887, 



p. 707.— Whiteaves, 1901, p. 87.— Treadwell, 1937, p. 25.— Wesenberg-Lund, 



1950b, p. 41; 1951, p. 24. 

 Spinther oniscoides Annenkova, 1938, p. 139. — Hartman, 1942b, p. 35, figs. 



45-4G.— Treadwell, 1948, p. 10, fig. l,c-ti— Uschakov, 1955, p. 107.— Not 



Johnston, 1845. 

 Spinther citrina Hartman, 1948, p. 16. 



Description. — Length up to 28 mm., width up to 16 mm., segments 

 30-48. Ventral surface with numerous scattered globular pajjillae in 

 midventral area and in lateral rows radiating to each neuropodium. 

 Prostomium in clear area about the anterior fourth of dorsum, covered 

 by an oval median antenna, at the base of which are 2 pairs of eyes. 

 Transverse notopodial ridges nearly covering the dorsum, radiating 

 anterior!}^ and posteriorly, with delicate hiniellae, with numerous 



— noS 



noS 



ne 



Figure 15. — Spintheridae, Spinther citrinus: a, dorsal view anterior endj b, ventral view 



anterior end. 



