1923] N'ATURAL SCIENCES OF PHILADELPHIA 221 



small notopodial and neuropodial setae tufts often appear to be 

 sessile, with a minute dorsal notopodial and a ventral neuropodial 

 tubercle, while between the rami is a sensory pit. Caudad of the 

 middle of the body, as the setse become smaller, these tubercles 

 increase in length and by XVII they are quite prominent and 

 become increasingly so for several segments but are again smaller 

 on XXIV to XXVI where they cease. 



The intra-podal sensory pore may be traced from II to XXVI 

 inclusive. At VHP a larger pore appears just ventral and anterior 

 of the neur()])odium and may be traced to XV. 



Notopodial cirri or branchiae begin on III and continue to XXIV, 

 arising in contact with the ventrocaudal faces of the notopodial 

 tubercles. They are slightly flattened, conical, tapering, and slightly 

 shorter than the segments to which they belong, becoming much 

 reduced caudally. 



Stations 4322, off Point La Jolla, 110 fathoms, green mud and 

 shells; 4332, off Point Loma Lighthouse, 62-183 fathoms, gray 

 sand, (type); 4550, off Point Pinos Lighthouse, 50-57 fathoms, 

 green mud. 

 ^^ravisia pupa Moore. 



Eleven specimens in all measuring up to 85 X 18 mm. agreeing 

 in having thirty-one or thirty-two segments, cirri on III to XXVI 

 inclusive and hispid setae, from the following stations: 4325, off 

 Point La Jolla, 191-292 fathoms, green mud and fine sand; 4358, 

 off Point Loma Lighthouse, 167-191 fathoms, green mud; 4365, 6 

 and 7, same locality, 130-215 fathoms, green mud. 



CHLORHiEMIDAE 

 Stylaroides collarifer Ehlers.? 



A single specimen of a species identical with or very close to 

 S. collarifer. There are thirty-four segments and the body is 

 much swollen in the middle part, contracted toward the ends and 

 with the cephalic region flattened. An adherent layer of sand 

 forms a hard crust especially at tlio anterior end and roughens 

 the surface throughout. 



Station 4351, off Point Loma Lighthouse, 423-488 fathoms, 

 soft green mud. 



Stylaroides papillata Johnson. 



Two specimens of 18 mm. and 31 mm., both exclusive of the 

 cephalic setae, have forty-five and sixty-seven segments respectively. 



^Very minute ventral sensory pores may be detected in some specimens on 

 segments anterior to \'II1. 



