POLYCII^TA. BENHAM. 213 



From a second locality comes a dark green, ill-preserved 

 female worm in eight fragments, the total length of which 

 amounts to 1160 mm. without a head or tail, and the breadth 

 is from 3.5 to 5 mm. 



Locs. Off Gabo Island, 200 fathoms. 

 South-west of Gabo Island, 75 fathoms. 



Distribution. Mediterranean ; Red Sea ; Indian Ocean ; 

 Pacific Ocean. 



EUNICE PYCNOBRANCHIATA, M'Intosh. 

 (Plate xlii., figs. 79, 80.) 



Eunice pycnobranchiata, M'Intosh, Chall. Rep., Zool., xii., 

 1885, p. 294. 



The twelve specimens obtained from various stations show, 

 as M'Intosh indicated, a certain amount of variation in those 

 features which are used for specific characterisation, and it 

 may be as well to give a general account of the species, filling 

 up a few of the lacunae in the original description. 



The colour of the preserved specimens is either a rich 

 reddish or coppery brown with iridescence, or a paler flesh 

 tint or even grey. In three individuals the pale ground 

 colour is marked by irregular and irregularly distributed 

 splotches of red, usually transversely disposed anteriorly, but 

 becoming smaller and more numerous and more scattered in 

 the mid-body and posterior segments. 



In some cases the fourth chaetigerous and in others the 

 second is quite pale, probably white in life ; while in the 

 majority this pale segment is not present. 



The size varies from 200 mm. by 8 mm. in a very soft 

 specimen to 110mm. by 5.5mm. in hardened specimens for 

 the same approximate number of segments, 146-150 ; while, 

 of course, smaller specimens occur with fewer segments. 



Taking for description a deep coppery brown individual, 

 rather soft, measuring 190 mm. by 8 mm. across the body, 

 the peristomium is 6 mm. and the breadth over the parapodia 

 is 10 mm. There are 147 segments. The widest region is a 

 short distance behind the peristoraium, thence it tapers very 

 slowly to the hinder end. 



The fourth chaetigerous is pale. 



The tentacles are moniliform, rather deeply notched, and 

 the furrows indicated by a pale brown line; even in those 

 specimens in which, owing to preservation, the moniliform 



