106 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



Family ARABELLIDAE 



Genus DRILONEREIS Claparede, 1870 



Drilonereis falcata Moore, 191 1 

 Moore, 191 1, pp. 298-299, pi. 20, figs. 150-154. 

 Hartman, 1944, p. 179. 

 Hartman and Barnard, this volume, p. 37. 



A specimen comes from San Pedro Basin. The species occurs more 

 commonly in shallower than basin depths ; its known distribution includes 

 California and western Mexico (Hartman, 1944, p. 179). 



Drilonereis nuda Moore, 1909 

 Moore, 1909, pp. 254-256, pi. 8, figs. 21-23. 

 Hartman, 1944, pp. 178-179, pi. 13, figs. 297-302. 

 D. sp., Hartman and Barnard, this volume, p. 46. 



Specimens were taken in San Pedro and Santa Catalina Basins. The 

 species is characterized by having a very slender prolonged body ; posterior 

 parapodial lobes do not elongate. The species is more typically a shallow 

 water form and seldom descends to basin depths. 



Drilonereis spp. 

 Small, juvenile, or vegetative (non-reproductive) stages come from 

 Santa Catalina, Santa Cruz, San Nicolas and Long Basins. They are 

 small, less than 20 mm long, and some have posterior parapodia with 

 prolonged postsetal lobes, similar to those of Drilonereis longa Webster, 

 known from the eastern shores of the United States (Hartman, 1945, 

 p. 51). Species of the genus are largely littoral or neritic forms. 



Family DORVILLEIDAE 



Genus DOR VILLEA Parfitt, 1866 



Dorvillea articulata (Hartman) 1938 



Stauroncrcis articulatus Hartman, 1938, pp. 101-102, figs. 39-44. 

 Hartman, 1944, p. 189. 



Smaller than typical representatives come from San Pedro, East 

 Cortes, questionably Long Basins and from Patton escarpment. The 

 largest measure 7.5 mm long for 40 segments; the prostomium usually 

 lacks eyes, unlike the shallow water forms. The distal end of neuropodia 

 is more prolonged and ventral cirri are longer and slenderer than is 



