POLYNOIDAE 49 



Description. The single complete example measures 60 mm. by 27 mm. including 

 the feet. Body colour in spirit is a pale yellow and the back is strongly but irregularly 

 splashed with purple: the tentacles and the tentacular and dorsal cirri are spotted with 

 purple and there is a purple band round the top of the elytrophores and dorsal cirro- 

 phores. 



7min 



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a 



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c d e 



Fig. II. Eulagisca corrientis . 

 a. Head. b. Foot. c. Dorsal bristle, d. Ventral bristle in profile, e. Ventral bristle. 



The prostomium (Fig. 11, <7) is subrectangular, and there are two pairs of large eyes 

 both set rather far back and to the sides. The head is of the lepidonotid type and the 

 lateral tentacles are terminally inserted. The medium tentacle is lost and the laterals 

 are nearly twice as long as the prostomium. The palps are as long as the head and the 

 first seven chaetigers, and the tentacular cirri are about two-thirds of their length. 



All the appendages except the palps, which are thickly covered with small papillae, 

 are very hirsute. Below the median tentaculophore is a small digitiform process (sub- 

 tentacular cirrus), which is probably a facial tubercle. From just above the junction 

 of the tentaculophores of the tentacular cirri on both sides is a bundle of about half 

 a dozen stout bristles pointing directly forwards. 



