POLYCHAETE WORMS, PART 1 107 



lated, some longer than dorsal cirri, upper ones longer than lower ones. 

 Notopodia a small conical lobe on the lower side of tlie cirrophore of 

 the dorsal cirrus, with acicula and few (6 or so) capillary setae. Neu- 

 ropodia elongate conical. Neurosetae compound, with appendages 

 long to short. Dorsal cirri articulated. Ventral cirri shorter than 

 neuropodia. Proboscis with a wide basal ring, a narrower more distal 

 ring with a circle of papillae in the middle of the ring. Without color 

 or with yellowish brown bands (in life). 



BiOLOGY.^ — ^Found at low water under rocks. Dredged on bottoms 

 of shells. 



Material examined. — Type from Eastport, Maine; also Hadley 

 Harbor, Woods Hole, Massachusetts. 



Distribution. — Maine to Massachusetts. Low water to 30 

 fathoms. 



Genus Nereirnyra Blainville, 1828 



Castalia Savigny, 1820, preoccupied by Lamarck (1819, in Moll.); type (mono- 

 typy) : Castalia rosea (Fabricius, 17S0); = Nereirnyra punctata (O. F. Miiller, 

 1776). 



Type designated by St0p-Bowitz, 1948a: A^emmyra rosea (Fabricius, 

 1780) ; ^Nereirnyra punctata (0. F. Miiller, 1776). Contains only one 

 New England species. 



Nereirnyra punctata (O. F. Miiller, 1776) 



Figure 28e 



Castalia cincinnata Verrill, 1885b, p. 434. 



Castalia punctata Fauvel, 1923, p. 240, fig. S9,f-k. — Wesenberg-Lund, 1951, p. 33; 



1953, p. 35.— Banse, 1956, p. 17, figs. 1-8.— Clark, 1960, p. 18. 

 Eteone (Mysta) barbata Thorson, 1946, p. 62, fig. 27.— Not Malmgren, 1865. 

 Nereirnyra punctata St0p-Bowitz, 1948a, p. 61. — Eliason, 1962, p. 240. 

 Castalia aphroditois Pettibone, 1954, p. 239, fig. 28, a, b; 1956, p. 554. 



Description. — ^Length up to 25 mm., width including setae up to 

 4 mm., segments up to 50. Body thick anteriorly, tapered posteriorly, 

 convex dorsally, flattened ventrally. A single tentacular segment 

 visible dorsally, the 6 pairs of tentacular cirri crowded, lateral to 

 prostomium, some longer than dorsal cirri, upper ones longer than 

 lower ones, articulated, with large cirrophores. Dorsal cirri long, 

 articulated. Notopodia reduced to acicula in the cirrophores of the 

 dorsal cirri and a few simple capillary setae (setae may be lacking). 

 Neuropodia with extra upper and lower conical lobes in addition to 

 the middle conical acicular lobe (fig. 28e). Neurosetae compound, 

 with terminal blades long to short. Proboscis barrel shaped, with 

 raised lateral lobes near base, with 10 papillae around opening, a pair 

 of ventral ridges just lateral to midventral notch (so-called ''jaws"). 

 Color, in life: yellowish with deeper transverse bands which may form 

 dots in the posterior region. 



569457 —63 8 



