16 



ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 15 



2. 

 3, 



3. 



4. 



4. 



5. 



5, 

 6. 

 6. 

 7. 



7. 



8. 



fig. 2) ........ 



Posterior and median neuropodia with single, longer presetal 



lobe (pi. 3, fig. 3) 



Notopodia with a prolonged presetal lobe (pi. 3, fig. 3) . . 



G. littorea, p 



Notopodia without a prolonged presetal lobe. G. uncinigera, p 

 Proboscis with a midventral longitudinal series of bifurcated 



organs G. congoensis and subspecies, p 



Proboscis without such midventral modified organs . 



Dorsal arc of micrognaths on proboscis well developed, with 



14 to 18 or more in a row 



Dorsal arc of micrognaths much reduced (textfig. 1) or 

 absent 



8. 

 9. 



9. 

 10. 

 10. 



11, 



11 



12. 



12. 



Proboscidial organs broadly flaring (pi. 1, figs. 5, 6) . 



G. brunnea, p 



Proboscidial organs much less flaring (pi. 1, figs. 7, 8) . 



G. maculata, p 



Prostomium with 5 or fewer annuli (pi. 2, fig. 1) . 



G. annulata, p 



Proboscis with 8 or more annuli 



Parapodial change from uniramous to biramous condition at 

 about segments 33-37; micrognaths number about 20 to 24 in 



the dorsal and 20-24 in the ventral arc 



G. quinquelabiata, p. 



Parapodial change after segment 50 



Chevrons number 4 pairs; parapodial change at about segment 



55 G. falklandica, p. 



Chevrons more numerous 



Parapodial change after segment 55-60 G. vorax, p. 



Parapodial change transitional between segments 70-112; 

 micrognaths number 23 in dorsal and about 16 in a ventral 



arc G. maorica, p. 



Chevrons very numerous 



Chevrons not conspicuously abundant 



Chevrons number about 90 pairs and extend along most of 

 the proboscidial length; macrognaths with 12 teeth; anterior 

 end with 36 uniramous segments; micrognaths with 30 dorsal 



and 12 ventral pieces G. multidentata, p. 



Chevrons number about 45 pairs; macrognaths with 6 teeth; 

 micrognaths total about 26 pieces; parapodial segments 36 to 

 43 are transitional . G. multidentata indica, p. 



4 



3 



23 

 25 



28 

 5 



7 



6 



17 



20 



20 

 8 



26 

 9 



30 

 10 

 14 



29 

 12 

 13 



14 



14 



