J) 



>5 



244: D. J. SCOURFIELD ON EPHIPPIA OF LYNCEID ENTOMOSTRACA. 



Fig. 6. Camptocercus similis, ephippial $ . x 70. 



7. Acroperus harpae, ephippium. x 60. 



8. ,, „ part of the back of an ephippial 

 female, showing thickening of cliitin and modification 

 of inner layer. 



9. Alonopsis ambigua, ephippium. x 70. 

 10. „ ,, a portion of the "packing" sur- 

 rounding the egg. x 400, 



„ 11. UuTi/alona occidentalism e^hi-pip'ml $. x 40, 

 ,, 12. A lona affinis, eipihiipipml ?. x 60. 



Plate 11. 



13. Alona tenuicaudis, ephippium. x 90. 



14. ,, „ part of the back of an ephippium, 

 showing the modification of the inner layer of the 

 shell. X 250. 



15. ^^onct costoia, ephippium. x 110. 



16. Alona rectangula, ephippium. x 150. 



17. ,, ,, a portion of the cellular tissue sur- 

 rounding the egg. X 450. 



18. Leydigia acanthocercoides, ephippium. x 70. 



19. ,, „ ,, (front view), x 30. 



20. ,, „ anterior end of line of weak- 

 ness. X 150. 



21. Grajjtoleberis testudinaria, ephippium. x 100. 



22. Alonella o'ostrata, ephippium. x 180. 



Plate 12. 



Alonella excisa, ephippium. x 130. 

 Alonella diaphana, e-phiippial ?. x 60. 

 Alonella karua, ephippium. x 140. 

 Peratacantha truncata, ephippium. x 100. 



„ „ a portion of the line of weakness. 



Pleio'oxus laevis, ephippium. x 100. 

 Dunhevedia sp., ephippium. (The dotted line shows the 

 limit of the darkened area). x 110. 



„ „ (view from anterior end). 



X 80 

 Chydorus sphaericus, ephippium. (The retention of the 

 anterior ventral portions of the shell, as shown in the 

 figure, is unusual in this species), x 130. 

 „ „ ,, (front view). x 100. 



„ „ ephippial ? . x 60. 



„ „ post-ephippial $ . x 60. 



Chydorus harroisi, e^hi^^isbl ?. x 140. 



Joum. Quekett Microscopical Club, JSer. 2, Vol. VIII., No. 50, April 1902. 







