POLYCHLA.ETE WORMS, PART 1 287 



Key to the New England Subgenera and Species of Scoloplos 



1. First 3 setigers with neuropodia with special type of stout hooded spines, 



appearing fraj'ed or brush tipped (fig. 74d) ; rest of thoracic setigers with 

 neurosetae tapering to fine tips . . (subgenus Califia). 



S. (Califia) schmitti (p. 287) 



Without special neuropodial spines on first 3 setigers . . (subgenus 



Scoloplos, sensu stricto) 2 



2. With interramal cirri on anterior abdominal segments (fig. 74/) .... 3 

 Without interramal cirri 5 



3. With subpodal ventral or stomach papillae on some anterior segments. 



S. (Scoloplos) riseri (p. 288) 

 Vv^ithout subpodal ventral or stomach papillae 4 



4. With 2-3 subpodal papillae in transitional region, followed by entire flattened 



subpodal flanges (may be undulate but not incised, fig. 76g). 



S. (Scoloplos) robustus (p. 288) 

 With 2 subpodal papillae in transitional region continuing as 2 subpodal 

 lobes, thus a notched or incised subpodal lobe (fig. 76/). 



S. (Scoloplos) fragilis (p. 290) 



5. With 1-2 extra subpodal papillae on last few thoracic and first few abdominal 



segments (fig. 76/i) ; thoracic neuropodia usually with crotchets ending in 

 blunt tips in addition to numerous neurosetae ending in capillary tips 



(fig. 76?:) S. (Scoloplos) armiger (p. 292) 



Without extra subpodal papillae on transitional segments or only on last 

 thoracic segment; thoracic neuropodia with all neurosetae ending in capillary 

 tips S. (Scoloplos) aciitus (p. 293) 



Scoloplos (Califia) schmitti Pettibone, 1957a 



Figure 74d 



Scoloplos (Scoloplos) schmitti Pettibone, 1957a, p. 164, fig. 3. 

 Califia schmitti Hartman, 1959a, p. 364. 



Description. — Length? (more than 20 mm.), width up to 2 mm., 

 segments numerous. Prostomium bluntly conical, about as wide as 

 long. Branchiae begin on setigers 8-10. Thoracic setigers 13-14. 

 First three setigers differ markedly from rest of thoracic setigers. 

 Neuropodia form oval cushion-like lobes, without postsetal papillae, 

 with 3 kinds of setae: (1) 2 rows of smooth, stout, reddish amber- 

 colored spines with tips pointed and hooded, the hood frayed giving 

 a brush-tipped appearance (fig. 74f/); (2) anterior row of shorter, 

 more slender crotchets, with frayed hood and transverse spinous rows; 

 (3) upper small group of crenulate capillary setae. Rest of thoracic 

 setigers with conical postsetal neuropodial lobes and several ro^vs of 

 crenulate capillary neurosetae. 



Abdominal region with paired branchiae, with digitiform postsetal 

 notopodial lobes, without interramal cirri, with bilobcd neuropodia, 

 with low entire subpodal flanges. Color, in alcohol: brownish banded 

 middorsally. 



Biology. — A deep water species, dredged on bottoms of mud. 



