's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 89 



5 Second gnathopod in ç? provided at the base of hind 



margin of hand with a large, falciform process, hand rather 

 slender, destitute of spines or hairs on palm margin. 



Talorchestia cleshayesi Audouin. 



Second gnathopod in cT regularly curved at palm margin 

 of hand, without falciform process, palm margin provided 

 with alternating large and smal spines. 



Talorchestia brito Stebbing. 



For the verification of some of the determinations made in using this 

 key the reader is referred to G. 0. Sars, Crustacea of Norway, v. I. 

 Amphipoda, pi. 9 — 11. 



Leiden Museum, April 1916. 



EXPLANATION OF PLATE III. 



Talorchestia brito Stebbing. 



Fig. 1. g. Magn. 6.5. 



Fig. 2. Superior antenna. Magn. 18. 



Fig. 3. Last joints of inferior antennae. Magn. 95. 



Fig. 4. Last joints of pereiopod 1 \ 



Fig. 5. » » » » 2 I 



Fig. 6. » » » » 3 ! Magn. 30. 



Fig. 7. » » » » 4 



Fig. 8. » » » » 5 



