194 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



9. Gnathopod 1, article 6 narrow 10 



9. Gnathopod 1, article 6 broad 12 



10. Epistome unproduced 1 1 



10. Epistome with a short cusp fatigans 



11. Peraeopod 5, article 2 reaching to end of article 5 capillatus 



11. Peraeopod 5, article 2 reaching to end of article 4 milleri 



12. Rostrum very narrow 13 



12. Rostrum not very narrow 16 



13. Pleon segment 6 with a large, retruse, acute cusp cornutus 



13. Pleon segment 6 plain 14 



14. Epistome with a long anterior cusp abronius 



14. Epistome unproduced 15 



15. Rostrum short stenodes 



15. Rostrum long longirostris 



16. Peraeopod 3, article 4 short, wide, posterior expansion 



narrow distally rostratus 



16. Peraeopod 3, article 4 broad, long, posterior expansion 



broad distally 17 



1 7. Epistome produced 1 8 



17. Epistome not produced 20 



18. Epistomal cusp long epistomus 



18. Epistomal cusp short 19 



19. Female eyes medium in size, uropod 3 inner ramus 



more than half as long as outer ramus lucubrans 



19. Female eyes small, uropod 3 inner ramus less 



than half as long as outer ramus daboius 



20. Peraeopod 5, article 2 teeth dissimilar in size 



and large heterocuspidatus* 



20. Peraeopod 5, article 2 teeth small and similar floridanus 



21. Third epimeron produced into a large tooth 22 



21. Third epimeron not produced into a large tooth 25 



22. Peraeopods 3-4 very stout pinguis 



22. Peraeopods 3-4 not very stout 23 



23. Female uropod 3, inner ramus less than half as long as outer, 



maxillipedal palp article 4 with apical spine robustus 



23. Female uropod 3, inner ramus more than half as long as outer,.... 



maxillipedal palp article 4 lacks spine 24 



24. Third pleonal epimeron with oblique lateral setal row ochoticus 



*This species has 2 positions in the key. 



