in the West of Ireland. 



373 



tlieir motions, while in a bottle of sea-water, were noticed to 

 be extremely lively. 



Fir/. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fiq. 

 Fig. 

 Fig. 



EXPLANATION OF THE PLATES. 

 Plate XVIII. 



1. Bairdia fidva, seen from the left side. 



2. The same, seen from above. 



3. The same, seen from below. 



4. The same, seen from the front. 



5. Cypridopsis obesa (female), seen from the left side. 



6. The same, seen from below. 



7. The same, seen from the front. 



8. Limnic.ythere Sancti-Patricii (female), seen from left side. 



9. The same, seen from above. 



10. The same, seen from below. 



11. The same, seen from the front. 



X 00. 



Plate XIX. 



Fig. 

 Fiq. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fiq. 

 Fig. 

 Fig. 

 Fig. 

 Fiq. 

 Fi'q. 

 Fiq. 

 Fiq. 

 Fig. 

 Fiq. 

 Fig. 



X40. 



X40. 



Cythere porcellanea (female ), seen from the left side. 



The same, seen from below. 



The same (male), seen from the left side. 



The same, seen from below. 



Cythere Macallana (female), seen from the left side. )■ X 00. 



The same, seen from above. 



The same, seen from below. 



The same (male), seen from the left side. 



The same, seen from below. 



Cythere pellueida (female), seen from the left side. 



The same, seen from below. 



The same (male), seen from the left side. 



Cythere cicatricosa, seen from the left side. [ ^ 

 , The same, seen from above. ( 



Cythere castanea (female), seen from the left side. 



The same, seen from above. ( 



The same (male), seen from the left side. ( 



The same, seen from above. ) 



Plate XX. 



Fig. 1. Cythere pidchella (male), seen from the left side. 



Fig. 2. The same, seen from above. 



Fig. 3. The same, seen from the front. 



Fig. 4. Aglaia complancda, seen from the left side. 



Fig. 5. The same, seen from above. 



Fig. 0. Cytheropteron rectum (male ?), seen from the left side. 



Fig. 7. The same, seen from below. 



Fig. 8. The same, seen from behind. 



Fig. 9. Cytheridea cornea, seen from the left side. 



Fig. 10. The same, seen from above. 



Fig. 11. Sclerochihts gracilis, seen from the left side. 



Fig. 12. The same, seen from above. 



Fig. 13. Cytherurajlavescens, seen from the left side. 



Fig. 14. The same, seen from below. 



Fig. 15. Sclerochilus contortus, var. abbreviates, seen from right side. 



Fig. 10. The same, seen from above. 



Ann. & Mag. N. Hist. Ser. 4. TV.iii. 28 



xOO. 



