3 {12) Carapace with I supraorbital spine on each side: third maxilhpcd without exopod 



Lebbeus A 



A (13) Four prominent spines along middorsal line of carapace L. groenlandicus 



Figure 27. — Lehheus iiroenlanJuus: carapace, lateral view. 



A (/.?) No more than 2 spines along dorsal line of carapace 



B 



B {4 ) Rostrum long, tip exceeding proximal article of antennular peduncle in juveniles 



and entire peduncle in adults L. polaris 



Figure 28. — Lehbeus polaris: carapace and antennuie, 

 lateral view of adult. 



B (A ) Rostrum short, tip not exceeding proximal article of antennular peduncle (body 



conspicuously banded) L. zebra 



Figure 29. — Lebbeus zebra: carapace and antennuie, 

 lateral view. 



11 



