NO. 2 HARTMAN : POLYCHAETOUS ANNELIDS 251 



Nephtys californiensis Hartman 



Hartman, 1938, pp. 150-151, fig. 64. 



At Dillon Beach, it is common in fairly clean sandy beaches, particu- 

 larly in shifting sands. Length is 150 to 300 mm. 



Family Nereidae 

 Key to Species 



1. Some notopodia provided with simple, heavy, dark brown hooks 

 Platynereis agassizi 



1. Notopodia without simple hooks 2 



2. Notopodia provided with blunt, composite hooks and pointed, 

 composite setae; area V of proboscis usually lacks paragnaths 

 Nereis 4 



2. Notopodia provided with only pointed composite setae; area V 



of proboscis usually with paragnaths Neanthes 3 



3. Larger; typically marine; dorsal parapodial lobe broad, foliace- 

 ous N. brandti 



3. Smaller; typically in tidal stream beds; dorsal parapodial lobe 

 not broad A^. lighti 



4. Dorsal parapodial lobe in posterior region long, straplike . . 

 A^. vexillosa 



4. Dorsal parapodial lobe in posterior region sometimes somewhat 

 prolonged but never straplike 5 



5. Proboscis provided with many tiny paragnaths over both oral 

 and maxillaiy rings A^. eakini 



5. Proboscis otherwise 6 



6. Paragnaths of proboscis all unusually tiny, inconspicuous; body 

 greatly prolonged ; inhabits mud flats A^^. procera 



6. Paragnaths of proboscis include some larger ones; body not 

 nearly so prolonged 7 



7. Parapodial lobes typically dark; dorsal lobe in posterior region 

 does not come to be noticeably longer than those in median region 

 A^. neonigripes 



7. Parapodial lobes not dark 8 



8. Larger; body uniformly colored bright green to drab brown; 

 dorsal lobe in posterior region subrectangular, about 2 times as 

 long as broad A^. mediator 



8. Smaller; dorsum pale, marked with dark pattern of interrupted 

 bars ; dorsal lobes in posterior parapodia not rectangular . . . 

 N. latescens 



