68 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.15 



G. tesselata Grube, see p. 77. 



G. tridactyla Schmarda, 1861, p. 97, from the Atlantic Ocean, is ques- 

 tionably G. convoluta Keferstein, see Fauvel, 1923, p. 383. 



G. unicornis Savigny, 1818, p. 315, from Egypt, see Fauvel, 1923, 

 p. 385. 



G. verdescens Chamberlin, 1919b, p. 14, from southern California, is 

 possibly G. oxycephala Ehlers, see p. 70. 



G. viridescens Stimpson, 1853, p. 33, from Grand Manan, eastern 

 Canada, is Goniada maculata Oersted, see Verrill, 1881, p. 289. 



Key to Species of Glycera 



1. Parapodia with 2 postsetal lobes 5 



1. Parapodia with a single postsetal lobe 2 



2. Proboscidial organs with transverse ridges 3 



2. Proboscidial organs without ridges 4 



3. Parapodia with 2 long presetal lobes in posterior segments; 

 proboscidial organs with 9 or 10 paired ridges (pi. 10, fig. 



4) G. oxycephala, p. 70 



3. Parapodia with a single presetal lobe in posterior segments; 

 proboscidial organs with 13 or 14 paired ridges (pi. 10, fig. 



1) G. tenuis, p. 71 



4. Proboscidial aileron lacks a prolonged accessory process . . 

 G. capitata, p. 76 



4. Proboscidial aileron with a prolonged process .... 

 G. papulosa, p. 66 



5. Without branchiae G. tesselata, p. 77 



5. With branchiae 6 



6. With nonretractile branchiae 7 



6. With retractile branchiae 10 



7. Parapodia with long, digitate, branchial lobes .... 8 



7. Parapodia with blisterlike branchial processes . G. robusta, p. 69 



8. Digitate branchial process at upper edge of parapodium . 9 



8. Digitate branchial process at both upper and lower edges of 

 parapodium G. dibranchiata, p. 70 



9. Branchial process longer than other parapodial lobes . 

 G. convoluta, p. 72 



9. Branchial process not longer than other parapodial lobes 



G. alba, p. 63 



10. Branchiae dendritically branched, emergent from posterior 



face of parapodia 11 



