OKAL APPENDAGES IN SOME TEPvRESTRIAL ISOPODS. 



293 



3. Hewitt, C. G.— " Lipia." Liverpool Mar. Biol. (Jomm., Mem.No.xiv. 



1907. 



4. MiERS, E. J. — On 11 Collection of Crustacea, Decapoda and Isopoda, with 



Descriptions of new Genera and Species. Proc. Zool. 8oc. Lond. 1877^ 

 pp. G53-679, pis. 66-69. 



5. Sars, G. 0. — An Account of the Crustacea of Norway, vol. ii. 1898. 



EXPLANATION OF THE PLATES. 







Plate 20. 





Fig. 



L 



Lif/ia oceanica, Linn. 





Mandible. 



Fig. 



2. 



)) 71 





1st Maxilla. 



Fig. 



3. 



>' )) 





2nd Maxilla. 



Fig. 



4. 



j; ;» 





Maxillipede. 



Fig. 



5. 



Trichoniscus roseus (Kocli). 



Maxillipede. 



Figs. 



6-1 L 



Oniacus asellus, Linn. 





Mandibles. 



Figs. 



12-U. 



» ;' 





1st Maxilla. 



Fig. 



15. 



>) V 





2nd Maxilla. 



Fig. 



16. 



J) j: 





Maxillipede. 







Plate 21. 





Figs. 



17, 18. 



Oiiiscus asellus, Linn. 





Maxilli pedes. 



Figs. 



1 9-20. 



Porcellio scaber, Latr. 





Mandibles. 



Figs. 



21- 23. 



'» )j 





1st Maxillpe. 



Figs. 



24-25. 



»; ;> 





Maxillipedes. 



Fig. 



26. 



Porcellio Icsvis, Latr. 





1st Maxilla. 



Figs. 



27, 28. 



Porcellionides 'pruinosuh 



( (Brandt). 



1st Maxillae. 



Figs. 



29, 30. 



U )> 





2nd Maxilla. 



Fig. 



31. 



Armadillidium vulgare 



(Lair.). 



Mandible. 



Fig. 



32. 



T> V 





1st Maxilla. 



Fig 



33. 



)I )) 





2nd Maxilla. 



