COMPLETE HARTMAN: POLYCHAETES FROM CALIFORNIA 71 



8. Setae entirely composite 9 



8. Setae partly simple, partly composite . . Syllis spp. 



9. Composite setae entirely falcigerous . . Typosyllis spp. 

 9. Composite setae partly falcigerous, partly spinigerous 



Langerhansia heterochaeta 



10. Without prostomial and peristomial antennae and tentacles 

 (PI. 8, fig. 1) Exogonella brunnea 



10. With prostomial antennae and peristomial tentacles (PL 7, 



fig. 1 11 



11. Surface of body papillate; peristomial tentacles one pair; giz- 

 zard short, barrel-shaped Sphaerosyllis 15 



11. Surface of body not papillate; peristomial tentacles one pair, 



small; gizzard long, cylindrical .... Exogone 17 



11. Surface of body not papillate; peristomial tentacles two pairs 

 Brania sp. 



12. Prostomium posteriorly covered by a nuchal flap ... 20 



12. Prostomium not covered by a nuchal flap 13 



13. Body short, consists of few segments; palpi free from one an- 

 other ; proboscis long and coiled ; peristomium with a pair of 

 flaps or epaulettes Amblyosyllis sp. 



13. Body longer, consists of more numerous segments; palpi some- 

 times partly fused ; proboscis straight ; peristomium without 

 epaulettes 14 



14. Distal end of pharynx smooth . . Pionosyllis gigantea 



14. Distal end of pharynx denticulate . . Eusyllis assimilis 



15. With 3 pairs of eyes, including one pair far in front 

 Sphaerosyllis erinaceus 



15. With 2 pairs of eyes 16 



16. Parapodia from fourth segment provided with capsules con- 

 taining rods " . Sphaerosyllis hystrix 



16. Parapodia without rods in capsules . Sphaerosyllis pirifera 



17. Prostomial antennae thickest at base, tapering distally; com- 

 posite falcigerous setae distally bifid . Exogone gemmifera 



17. Prostomial antennae not thickest at base; composite falcigerous 

 setae distally entire 18 



18. Composite setae entirely falcigerous . Exogone verugera 



18. Composite setae partly spinigerous 19 



19. Composite falcigerous setae with many teeth along cutting 

 edge Exogone lourei 



