NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 161 



seta." L. cervtcalis Treadwell (1922, p. 176, figs. 14-21) from Friday 

 Harbor, Washington, has similar parts and is probably also the same. 



Distribution. — Northeast Pacific, south to the Gulf of California; 

 Gulf of Mexico ; below the intertidal. 



Lumbrlneris limicola, new species 

 Plate 11, Figs. 230-237 



Collections.— \202-A0 (1); 1204-40 (1). 



This is a large, robust species, the length of 81 segments is 84 mm; 

 the width is 10 with parapodia, 6 mm without. The prostomium is short, 

 equitriangular, but with blunt tip; it is depressed, considerably narrower 

 than the body rings. The first (apodous) ring is little longer than the 

 third, the second is about 2/3 as long as the first. 



Parapodia are conspicuous from the first and become increasingly so 

 farther back; they are provided with a well-defined postsetal lobe 

 throughout, and with full, spreading, laterally directed setal fascicles (pi. 

 11, figs. 234-237). The notoacicular papilla is about equally noticeable 

 through the 81 segments; it is located at the dorsal, inner corner of the 

 parapodium near the body wall. The presetal lobe remains low, cushion- 

 like; but in the first 5 or so segments there is a small, papillar swelling at 

 its dorsal portion. The postsetal lobe is large from the first, obliquely tri- 

 angular, but between segments 30 and 35 its dorsoectal edge elongates 

 gradually to form, farther back, the long postsetal lobe. 



Setae are disposed in full, spreading ranks through a long, anterior 

 region, at least through 44 segments; thereafter the long, limbate setae 

 and composite hooks disappear. The first parapodium is provided with 7 

 or 8 long, bilimbate setae above, 12 long shafted, composite hooks medi- 

 ally, and 5 or 6 inferior, bilimbate setae; these are accompanied by 5 

 slender, yellow acicula. A third parapodium, slightly larger than the first, 

 is shown in pi. 11, fig. 234. Farther back there is a gradual increase in 

 size of parapodia and number of setae in each fascicle. An eighteenth 

 parapodium (pi. 11, fig. 235) has a triangular postsetal lobe, 5 clear 

 yellow acicula, and many limbate setae and composite hooded hooks. By 

 the forty- fourth, the composite setae are nearly absent save for one or 2, 

 and replaced by simple, hooded hooks (pi. 11, fig. 236) ; there are typi- 

 cally 4 larger, clear yellow acicula in addition to the hooks. Thereafter 

 the postsetal lobe elongates and is somewhat erect ; the limbate setae may 

 continue through at least 81 segments, but singly in parapodia, when 

 present. 



